| Subject | Date Asked |
|
| Question | 11/10/2009 |
Q: ...sir can u tell me what do you think about 2012...is it real or not ANSWER: No Farrukh, it is NOT ...
A: It is the job of an entertainment business to "entertain". Youtube and National Geographic do just ...
|
| Question | 11/9/2009 |
Q: ...sir can u tell me what do you think about 2012...is it real or not
A: No Farrukh, it is NOT real. At least not in the premise put forth in the movie. The Mayans were ...
|
| Degree concerns | 11/8/2009 |
Q: Sir, hope u r fine and in good health,i would like to know ur suggestion about this common issue now ...
A: This is just my personal opinion but I think that "practical" education is just as important as that ...
|
| Identify rock | 11/4/2009 |
Q: I am looking to have this rock identified. I was under the assumption it was a selenite. Have my ...
A: This is an easy one. Yes it is selenite. It looks like a piece of a selenite rose, perhaps from ...
|
| Rock or Meteorite | 10/31/2009 |
Q: I found this rock that is black and is nothing close to being round it has little white spots that ...
A: In order to get an idea of what you have I am going to need a picture. There are too many rocks ...
|
| diamond. | 10/29/2009 |
Q: please tell the diamond is hardest mineral in moh's hardness scale then what other mineral can cut ...
A: Good question. So far the only substance that we have that will cut a diamond is another diamond. ...
|
| strange rock | 10/26/2009 |
Q: I found a rock in a field in southern Quebec that is different than anything I have ever seen ...
A: I'm really going to need to see a picture to get a better idea of what you have. Not too many rocks ...
|
| Where does "new water" come from | 10/25/2009 |
Q: Is there a geophysical/chemical process that creates "new water" or is all water simply reprocessed ...
A: Interesting question. All the water, or most of it, that is on the Earth today was here since the ...
|
| What the heck | 10/5/2009 |
Q: I teach in a Native Village in the North Slope of Alaska. Recently, a mom brought in this large ...
A: This is very interesting. When I read your question I hadn't seen the photo yet but it sounded very ...
|
| black rock found | 10/1/2009 |
Q: After the hurricane off the east coast this summer, my son found a big, heavy black rock in the ...
A: I won't be able to give you a really good idea of what your rock is without a picture. A heavy, ...
|
| gems | 9/27/2009 |
Q: could you tell me which is the Rarest Mineral / Gem on our planet ??? after the Diamond, which is ...
A: Painite is considered to be the rarest gemn on Earth. It's basically a boron oxide. Here's its ...
|
| Minerals | 9/18/2009 |
Q: Im going a 50 question review for my geology class on a chapter concerning Minerals. I think I have ...
A: First one's kind of tricky. You are correct. A crystal will grow to it's euhedral form if it's ...
|
| Michigan Basin | 9/15/2009 |
Q: I have a few questions about the Michigan Basin. First one is, what is it? Is it just a large crater ...
A: Yours is a VERY complex and difficult question to cover here. There just is no simple answer. It ...
|
| geology | 7/28/2009 |
Q: what is oil window and water window?also what depth,time,presure to form oil and gas?are they equal ...
A: Your question is too long and involved to properly answer here but this website is pretty good and ...
|
| Interesting specimen | 7/15/2009 |
Q: We found an interesting specimen in a field in Tennessee. It is mostly rust colored but does NOT ...
A: Kewl looking rock! I have seen specimens very like this before. Is it very hard? If it is, then I ...
|
| Boulders | 7/12/2009 |
Q: This may be odd...but I want to use a red surface boulder, what I would describe as rounded, not ...
A: There are many minerals that are red but you probably won't find any large enough for a headstone. ...
|
| Geodes | 7/8/2009 |
Q: We have a cottage in the tip of the thumb of Michigan on Lake Huron - sunrise side. There are LOTS ...
A: The short answer is, I would not expect to find geodes on your beach. Although they can be found in ...
|
| Bimodal vocanic rocks | 7/7/2009 |
Q: Would you please explain how bimodal vocalnics formed?
A: Bimodal volcanic rocks are formed when both felsic and mafic material is emplaced from a single ...
|
| mineral identification | 6/30/2009 |
Q: I'm always difficult to tell the difference between biotite amphibole and pyroxene from a rock ...
A: This is a difficult question and, unfortunately the best way to tell the difference is just through ...
|
| Field Geology | 6/29/2009 |
Q: I often go in the field but I can not recognize the thrust fault. Please explain that how "thrust ...
A: A thrust (or reverse) fault is one in which one side of the fault is pushed up over the other side. ...
|
| ID rock | 6/28/2009 |
Q: Can you tell me what this rock is? I've never seen one on any of the rough rock sites yet I have ...
A: Nice rock you have there. You don't mention where you are from but I am pretty sure you have a type ...
|
| How common is it to find lava rock | 6/18/2009 |
Q: I was gardening in my yard and just below the surface I found what appear to be lava rocks. Now, I ...
A: Your description, jet black, glassy, and hard, could be a couple of things. I would first suspect ...
|
| What rock is this? | 6/7/2009 |
Q: I found this rock years ago when I was a kid, near our beach. I always thought it was pretty and ...
A: Your rock certainly can be displayed out doors. It's melting point is between 1,100 and 1,200 ...
|
| What rock is this? | 6/6/2009 |
Q: I found this rock years ago when I was a kid, near our beach. I always thought it was pretty and ...
A: It's pretty clear from the picture that your specimen is a "vesicular basalt". That is an igneous ...
|
| Question | 6/5/2009 |
Q: Could you please define what drilling and test pit excavation are and what they are used for THanks
A: These are ways to get underground to see what is there. "Drilling" is just what you'd expect; ...
|
| Obsidian | 6/4/2009 |
Q: I heard on TV that only diamonds are hard enough to cut granite, such as for, say, tombstones. What ...
A: Obsidian will NOT cut granite. Obsidian is volcanic glass and so has hardness of about 5 to 5.5 on ...
|
| Rock Cycle | 5/24/2009 |
Q: Does the rock cycle happen in places like the Arctic or Antarctica?
A: Your question makes me wonder if you are sure of what the "Rock Cycle" is. Just in case I will give ...
|
| Unusual Rock | 5/16/2009 |
Q: Reszka, My sons dug up this rock around 20 years ago, they brought to me because they know I'm into ...
A: The picture is a little blurry but I can see some detail. The outside looks glassy and somewhat ...
|
| rock? | 5/15/2009 |
Q: We discovered a large rock in our backyard, L.A. area. I feel it is much too heavy to be petrified ...
A: You definitely have a petrified wood specimen. A very nice one too. They can feel heavier than ...
|
| petrolium geology | 4/30/2009 |
Q: Can you please tell me the difference between play and trap. i am working in an exploration ...
A: A "trap" is the physical structure into which the petroleum product has accumulated. Sometimes the ...
|
| regarding a stone | 4/28/2009 |
Q: sir,i found a stone,it appears to be colorless and it weighs about 14.5 grams. could you please help ...
A: It is a little hard to tell from just a photo but it looks like quartz to me. It could also be ...
|
| Heavy Weights | 4/27/2009 |
Q: Sir my question is: How is the weight of large rocks and large animals like elephant determined?
A: The weight of large things is usually determined by weighing them. There are very large scales that ...
|
| Identificaiton of a rock with a mineral component. | 4/24/2009 |
Q: I would appreciate it if you could identify a rock in my possession. The rock has a firm, but not ...
A: Nice specimen, and the picture is pretty good. But with a picture alone it is very difficult to ...
|
| geology questions | 4/23/2009 |
Q: during the big san francisco earthqauke in the 1900s how were the plate techtonics involved? Why did ...
A: This is an interesting question but it is too long to answer here. Go to this website. It's ...
|
| Mountains | 4/20/2009 |
Q: Is it scientifically accurate to suggest that Mountains are, partly, responsible for the equilibrium ...
A: Good question. It would not be accurate. Mountains are the result of the action of the moving ...
|
| Rock Identification | 4/12/2009 |
Q: Was wondering if you could help identify this rock. Found it in a dried up creek bed in western ...
A: What I think you have there is a granite, or more correctly a "leuco-granite". Leuco means light ...
|
| volcanoes | 4/10/2009 |
Q: Is it possible for geologists to travel to the middle of an inactive volcano? If so, what is the ...
A: If by "middle of an inactive volcano" you mean below it's surface and not just to the middle of the ...
|
| fossil fuels | 3/18/2009 |
Q: hey,look this isn't a sophisticated question I'm just a curious 14 year old and i hope I'm not ...
A: Fine question Vicken, unfortunately the answer is all too easy. You can make hydrocarbon based ...
|
| Rock identification | 3/17/2009 |
Q: I found this rock on the shore of Lake Washington recently. It appears to be igneous, and globular, ...
A: VERY interesting rock!! I am not completely certain what it is. I haven't seen anything precisely ...
|
| Sand? | 3/12/2009 |
Q: I have to compare sand samples and slides next week. Now i just don't no where to start and what to ...
A: Normally, when doing an analysis of a sample you look for things like color, quantity, luster, ...
|
| Michigan rock collecting laws for State Land | 3/8/2009 |
Q: Mr. Reszka, I am an avid rock and fossil collector as well as a general outdoorsman. I am curious ...
A: Sorry it took so long; I've been battling the flu... Yours is a good question. Michigan has no ...
|
| quartz | 3/5/2009 |
Q: i have a rock that is lightly yellow in color, and looks like quartz. it is very rough.i found it on ...
A: Sorry it took so long to get back to you; I've been battling the flu. The little triangles make me ...
|
| quartz | 3/2/2009 |
Q: i have a rock that is lightly yellow in color, and looks like quartz. it is very rough.i found it on ...
A: Without a picture it is very hard to determine the kind of rock or mineral you have. I can take a ...
|
| Rock | 3/1/2009 |
Q: I have found a rock that my husband has been packing from house to house with him. This particular ...
A: That's a GREAT picture. It's clear and you have something as a size reference. Great job! Thanks. ...
|
| what type of rock is "river rock" | 2/27/2009 |
Q: My wife is an interior desogner and has used "river rock" as a facade one the chimmney, kitchen and ...
A: "River rock" is a generalized term that is not meant to describe any particular type of rock. It's ...
|
| Rock | 2/22/2009 |
Q: I have found a rock that my husband has been packing from house to house with him. This particular ...
A: Is there any way you could take a picture and send it along with a followup question? That would ...
|
| rock found, unusual | 2/20/2009 |
Q: I found this unusual rock on the beach last summer and I have no idea what it might be. It is black ...
A: Sending a picture would be the best idea. However, I think I might know what it is. You mention it ...
|
| fulgurites | 2/12/2009 |
Q: Reszka, I am inquiring as to what I believe is a fulgurite which I found on the beach of Lake ...
A: You certainly could have a fulgurite. Is the center glass or at least glassy? Most fulgurites have ...
|
| ROCKS!!!! | 2/5/2009 |
Q: A gentleman at my work gave me this rock that was on his desk, he doesn't know where it came from ...
A: The picture is a little blurry but I think I can tell what it is. Does it look very shiny, or ...
|
| Type of rock | 2/4/2009 |
Q: Hi I would just like to know what kind of rock this is and how it was formed -is it unusual?
A: It's usually hard to give a definitive ID of a rock without actually holding it. The best we can do ...
|
| Obsidian | 1/24/2009 |
Q: I have read on obsidian and I found it quite interesting. I will like to know more about obsidian, ...
A: Good to hear from you again. I hope you were able to use the suggestions I gave you last time. ...
|
| Rocks & Mineral | 1/22/2009 |
Q: I am taking Earth System Engineering Course and I am interested in rocks & minerals. Could you ...
A: Here are some of the sites that I use. There are many more but these are good, general sites that I ...
|
| coal | 12/2/2008 |
Q: i was told that coal was mined in flint michigan any help .thank you
A: There was never very much coal mining in that section of the State. Take a look at the map at this ...
|
| glacial formations | 11/30/2008 |
Q: Was wondering what the glacial till gravel deposit formation that runs threw ogemaw county official ...
A: Your best bet to find out an answer is to borrow Helen Martin's "Outline of the Geologic History of ...
|
| metamorphic processes | 11/21/2008 |
Q: I had a question dealing with metamorphic rocks. I was told that garnet- mica schist and granite ...
A: First let's discuss the Rock Cycle a little bit. It's called a "Cycle" because there really is no ...
|
| geology | 11/20/2008 |
Q: Hi my question is that how minerals form
A: “How do minerals form?” This sounds like a simple question but it really is very complicated, for ...
|
| about Engg geology | 9/30/2008 |
Q: What is the role of civil engineer geology
A: I’m not a geological engineer nor a civil engineer so I can’t speak from experience. I do know that ...
|
| unusual rock | 9/29/2008 |
Q: I live in northeast Arkansas where I recently found a rock out in the one of our fields where I ...
A: Sounds like a very unusual rock. You say it's made of gravel....I have seen oddly shaped structures ...
|
| porosity & oil entrapment | 9/15/2008 |
Q: sir, could you tell me correlation between porosity & permeability & availability of oil in traps ? ...
A: This is a question worthy of years of study and books of information so I can't give you a complete ...
|
| oil reservoirs | 9/9/2008 |
Q: has anyone ever used a camera cable to look inside an empty oil reservoir? would not some of these ...
A: Cameras are routinely used to check boreholes in wells. In most cases reservoirs are not open ...
|
| Geology- 'The Core' movie | 9/2/2008 |
Q: I read in a previous answer you gave someone, that you haven't see the movie 'the core' but i was ...
A: As you say Sarah I haven't seen the movie but I can answer your questions anyway. - Can the liquid ...
|
| Querry- Chromite, mining | 9/1/2008 |
Q: Mr. Reszka, What resources result in chromite as a by-product during mining(eg. platinum)?
A: You have to look for chromium minerals such as Benitorite, Chomite, or Crocoite. There are more ...
|
| Obsidian in Southeast Michigan | 8/14/2008 |
Q: I've read your previous answer about Obsidian being rare in Michigan. I live in Milan Michigan and ...
A: The easiest way to tell the difference between obsidian and flint is that obsidian really does look ...
|
| birth of earth | 8/13/2008 |
Q: reg my theory that earth is expanding because it is alive like a tree.it is taking energy in ...
A: I'm afraid I can't help you Suresh. I believe your theory is incorrect and I really have no idea ...
|
| metallic rock found | 8/9/2008 |
Q: Some children found a large rock. On the outside it looks just like a rock. Then when you wpe away ...
A: A picture would be helpful. You can send it to my gmail account at geologyexpert@gmail.com. I can ...
|
| Supermountains | 8/8/2008 |
Q: What do you think of the new theory about supermountains appearing for a short while, many millions ...
A: This is a pretty new theory. Ian Campbell and Charlotte Allen of the Australian National University ...
|
| Iron Pyrite vs Gold | 8/6/2008 |
Q: How do you differentiate between gold and Iron pyrite? I was hoping that a magnet would do the trick ...
A: The quickest way to tell is by pushing on it with your fingernail or a knife blade. Gold is much ...
|
| black sand | 6/20/2008 |
Q: i live in the desert of southern calif almost directly on the fault line and was wondering about ...
A: Sorry Diane, I won't be able to help you too much; I am not expert in California Geology. I do ...
|
| silver metallic rock | 6/8/2008 |
Q: I found a small metallic rock on the shore of Lake Ontario today and am very curious as to what it ...
A: You can go ahead and send me a picture at geologyexpert@gmali.com. But I'll bet I know what it is ...
|
| Agates | 6/7/2008 |
Q: How can I tell if the agate in my yard is worth any money?
A: There are many types of agate, I think the technical term is "zillions" so the only way to reliably ...
|
| Silver Rock | 6/2/2008 |
Q: Today I found a strange rock in my garden by coincidence. It is a small rounded rock that is ...
A: Good description. I'm going to assume you found this rock in Ireland since you went to school there ...
|
| obsidian | 6/1/2008 |
Q: I found a rock in Ogemaw County, MI. (about the middle of the lower peninsula) that is baffling me. ...
A: You're right it would be unlikely to find obsidian here in Michigan but your find might be flint. ...
|
| geological maps | 5/20/2008 |
Q: would you please tell me about the usefulness of geological maps for civil engineers.
A: Geological information can affect the location, construction, design, and operation of most ...
|
| glacial gold in texas | 5/19/2008 |
Q: were the glaciers ever as far south as Blunzer Texas? the reason i ask is because i ordered a load ...
A: The ice sheets never reached far enough south. At various times the Earth has been covered in ice ...
|
| Volcano and Sea | 5/16/2008 |
Q: what would happen if we dug an underground tunnel from a sea to a volcano?
A: Well, what happens if you dug a tunnel into a volcano would depend on the type of volcano, and how ...
|
| GEOLOGY FOSSILS | 5/15/2008 |
Q: Why is it desirable to use more than one fossil in a rock unit to determine its relative age?
A: The reason we use more than one indicator is that so many things can mess up our deductions. ...
|
| World's Lowest Island | 5/8/2008 |
Q: Not sure if this is a geology question, but it's worth shot. According to Guinness (U.S. edition, ...
A: Not much info on this island. It is an island in a lake in Ethipoia that goes by the jaw-breaker ...
|
| gold flake ? | 4/10/2008 |
Q: I live in ST-Zotique Canada, I was in my crawl space, under my house ( bungalow on stilts "earth ...
A: Gold is found in Canada but I am not an expert in where. However, a good way to find out if you ...
|
| empty oil areas | 3/28/2008 |
Q: What happens after oil has been tapped out of a said area? does the loss of the weight of the oil ...
A: Good question and one that's been worked on, at least to my knowledge, since the 1970's. Turns out ...
|
| What in the world is it? | 3/25/2008 |
Q: Hey i have a question about this rock i found. I was in Arizona at a hotel in Pheonix and i saw this ...
A: Sounds like an interesting rock. Sometimes you'll find a rock that has what's called a "Contact". ...
|
| Iron Mineral | 3/13/2008 |
Q: Where is the iron mineral originally formed?
A: I'm not certain what your asking but I think you mean where, on Earth, does iron come from. ...
|
| The Triassic Period | 3/11/2008 |
Q: I would like to know if you could possibly help me on my science project. What was the hydrology ...
A: Afraid I can't be too much help since this area is a little outside my expertise. Go to this site ...
|
| Geology | 3/7/2008 |
Q: The magma create new rocks at central ridge, why doesn't our earth keep on growing?
A: Good question and like all good questions the answer is very complicated and long. We will distill ...
|
| are minerals also considered rocks? | 3/6/2008 |
Q: I am trying to find out if minerals are also considered rocks. In a book at school about rocks it ...
A: Good question and one I get asked a lot. Seems like you did a lot of research and it turned out a ...
|
| Rocks | 2/9/2008 |
Q: I come across a rock that is inky-black and has purple sparkles. Can you help declaring what kind of ...
A: Without a picture or some more information it will be very hard to tell what kind of rock you have ...
|
| unknown rock | 1/7/2008 |
Q: I live in a northwest suburb of chicago,and i found a rock that i can't find an example of anywhere ...
A: Sounds to me like you have a piece of JASPER. That's a variety of cryptocrystalline Quartz (SiO2): ...
|
| river rocks | 1/4/2008 |
Q: I found a beautifully shaped river rock from Minnesota. It is about 4" long. It had a little black ...
A: I think you have a piece of BASALT. It's a black, volcanic rock with mineral grains to small to be ...
|
| silver mirrorish rock | 12/31/2007 |
Q: Honestly I have had this rock since I was pretty young and I have never truly know the name of it. ...
A: Sounds like a pretty odd specimen to me. Your description makes me think of something in the MICA ...
|
| rock collecting | 12/26/2007 |
Q: What laws (if any) cover collecting rocks from beneath the great lakes adjacent to public lands? Can ...
A: The Great Lakes bottom lands, below the high tide mark, belong to the people of Michigan. That ...
|
| shiny rock | 12/23/2007 |
Q: I found a shiny silver rock that chips if you strike it and it does not tarnish when you touch it. ...
A: It's very difficult to tell what your rock is from your description. I could use some more ...
|
| Volcanoes | 12/19/2007 |
Q: Reszka, My name is Rachel. I am eight and a half years old. I am doing a project in school on ...
A: “The most destructive volcano”….not as easy a question to answer as you might think. By that do you ...
|
| i found an odd rock | 12/3/2007 |
Q: i have found a small chunk of white quartz it has a silver coloration mineral growth on its sides ...
A: Unfortunately I can't find any of your images at the site. Your specimen sounds like it was part of ...
|
| Darcy's Law | 11/30/2007 |
Q: I am a sixth grade student. I am doing a science fair project for school and I am experimenting the ...
A: Sorry but your question covers a different geological discipline than the ones with which I'm most ...
|
| Radioactive Decay | 11/20/2007 |
Q: what happens? What makes it happen?
A: This is a REALLY complex topic but maybe we can simplify it. Radioactive decay is a process by ...
|
| minerals | 11/3/2007 |
Q: Why are minerals so useful?
A: Minerals are so useful because, well, the truth is if you can't grow it you must mine it. Nearly ...
|
| Science or Rocks | 9/30/2007 |
Q: I could never really understand why rocks are made of minerals and how rocks even get the minerals ...
A: A general definition of a rock is that it is an aggregate of minerals. So anytime a group of ...
|
| Geology | 9/22/2007 |
Q: Are there emeralds in Greenland?
A: There are no emerald localities in Greenland. I should say that no one has found any emerald ...
|
| granite | 9/12/2007 |
Q: If I was to melt a piece of granite, what would melt first, then second, then third?
A: Quartz, and the other "lighter" silicates like K-feldspar, would melt first at about 600 C. The ...
|
| engineering geology | 9/10/2007 |
Q: what is the importance of engineering geology in civil engineering
A: I’m not a geological engineer nor a civil engineer so I can’t speak from experience. I do know that ...
|
| ice age - reversal of magnetic pole | 8/14/2007 |
Q: In a study book about human prehistory I read the following: 'about 780.000 years ago, the earth's ...
A: There isn't any correlation that I am aware of. We just don't know what causes an ice age and I ...
|
| 7.5 pound agate | 8/12/2007 |
Q: Three weeks ago I found what I think is a huge agate while snorkeling in Lake Michigan in Sturgeon ...
A: Sure Lori, send the picture to : geologyexpert@yahoo.com But I'll bet you have a sample of the ...
|
| found boulder | 8/11/2007 |
Q: I have a farm about 5 mi from the ind boarder cent 49032 mi. I've found a laccolith with a band of ...
A: Do your really mean a laccolith? That's described as a low hill that could be 5 miles wide and ...
|
| geodes | 7/26/2007 |
Q: I cracked open a geode yesterday and there was a perfectly round "ball" about the size of a walnut ...
A: Sounds like a really interesting geode you've got there! It's odd but pretty near anything can ...
|
| black rock with sparkles | 6/30/2007 |
Q: I found a black rock (about 40 years ago). I believe in Michigan, but it might have been on a trip ...
A: Without seeing the rock it is somewhat hard to tell but I suspect that, almost certainly, your rock ...
|
| michigan black sand | 6/28/2007 |
Q: Dr Rob On the typical Northern Michigan beach, the sand is tan, however there is always a few ...
A: The black material you see is usually mde up of iron rich minerals. Much of it will even be ...
|
| Found 1972, Burton, Mi a large dark green rock | 6/11/2007 |
Q: With out seeing it, could you tell me what it may be. I plowed it up during grading.
A: Without seeing the rock it's really difficult to tell what it is but I could hazard a guess that ...
|
| Mountain forming | 5/21/2007 |
Q: What is the most COMMOM way for mountains to form? A)2 plates come together (this is true). ...
A: Actually, A, B, and C are the same thing; geologically speaking. When continents collide they will ...
|
| Ice-Age | 4/27/2007 |
Q: How much of the Earth's land area was covered by ice in the last Ice-Age? Thanks Geoff
A: The last ice age, about 10,000 years ago, covered some 32% of the Earth's surface. Check out this ...
|
| geology | 4/19/2007 |
Q: How does the plate tectonic theory explain mountain belt formation?
A: When plates move around and crash into one another they can become deformed. Think of a tablecloth; ...
|
| a rock found | 3/29/2007 |
Q: It is hard to ask a question about this rock so if you are any good at identifying rocks by pic I ...
A: Just send the picture files to: geologyexpert@yahoo.com If I can identify them I'll let you know. ...
|
| Interview | 2/28/2007 |
Q: My 4th grade student is doing and independent study project on rocks and fossils. She is required to ...
A: 1. Why did you choose to study geology? I've always enjoyed the outdoors and I always wondered why ...
|
| earth flares | 2/18/2007 |
Q: Recently i asked professor James Gort thisDo you think it's feasible that earth could produce "earth ...
A: Unfortunately I can't help much. What little research I did couldn't turn up anything on earth ...
|
| "earth flares" | 2/17/2007 |
Q: Recently i asked professor James Gort thisDo you think it's feasible that earth could produce "earth ...
A: Earthquakes have re-occurred in many places; Japan, California, and Yellowstone to name a few. The ...
|
| Zone of Contact Metamorphism. | 1/4/2007 |
Q: What kinds of rocks have a Zone of Contact Metamorphism? Do sandstone & limestone have these zones?
A: The short answer to your question is that ALL kinds of rock can have a zone of contact metamorphism. ...
|
| Unknown Rock I Found | 11/25/2006 |
Q: I found a rock under a tree in my front yard. It looked like a meteorite. I have had a couple of ...
A: You can certainly send some pictures to me. geologyexpert@yahoo.com Tell me in what State you ...
|
| Sand | 10/24/2006 |
Q: Could you explain me origin of sand?
A: We get sand when large rocks are broken down into really small pieces through the action of wind, ...
|
| stalagtites and stalagmites | 10/23/2006 |
Q: Which one comes down and which one builds up and which is usually bigger?
A: I usually remember it this way: Stalactite has an extra "T" in it and that reminds me that it grows ...
|
| Questions | 10/22/2006 |
Q: my name is Valentina Baraldi. I am in the 7th grade and I study at The American School of Rio de ...
A: A lot of questions and every one of them would take far too long to answer here. I'll distill them ...
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| fools gold or not | 10/17/2006 |
Q: hi i got two stones off my dad and he found them i dont know where also i think one is fools gold as ...
A: You've done pretty much what I would have told you. You might also want to try pressing the tip of ...
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| drift diamonds | 10/16/2006 |
Q: I am extremely interested in geology and a rockhounding enthusiast as well. Some where I remember ...
A: Can't give you too much information on diamonds in Michigan. I know there have been about 20 sites ...
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| rocks | 10/4/2006 |
Q: My first graders have been studying rocks, and they formed thisOn the earth, are there more rocks on ...
A: Like most questions form kids this one can be deceptively difficult. It could involve discussions ...
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| rock fossils vertebrates | 9/30/2006 |
Q: i have found several rocks that are vertebrate fossils. i admit all are rocks that are parts of ...
A: Your best bet would be to find someone in your State's Geological Survey. They would probably be ...
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| What Kind of Rock? | 9/29/2006 |
Q: I need to find out which rock has mostly crystal grains, could be medium or coarse grained, has no ...
A: A lot of questions here but it really boils down to a specific rock type. You ask "which rock has ...
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| what are the steps involved for igneous to become Sedimentary Rocks | 9/28/2006 |
Q: what are the steps involved for igneous rocks to become Sedimentary Rocks. My son had this on a ...
A: To make a sedimentary rock from an igneous rock you must 1. ERODE the rock (another term is ...
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| Picture of the pangea. | 9/27/2006 |
Q: ..Do you have some picture's of the pangea from 250 million years ago? If u do please send them to ...
A: Go to this website: http://www.scotese.com/earth.htm It shows maps of what the Earth's surface ...
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| Gold bearing rocks | 9/12/2006 |
Q: I was wondering ,I have found a rock that has small traces of gold particles in them, i have broken ...
A: It's really hard to tell if you have gold or not without having seen it, or knowing something more ...
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| strata | 9/9/2006 |
Q: How deep are the deepest known strata of rocks? Does this make them the oldest sedimentary rocks? ...
A: Let’s take your questions one at a time: How deep are the deepest known strata of rocks? That ...
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| Mountains | 8/2/2006 |
Q: Do mountains have deep roots inside the earth? . Regards, Ameen.
A: Mountain don't really have roots. The crust beneath mountains is much thicker than other places on ...
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| Igneous and Sedimentary Breccia | 7/23/2006 |
Q: How can the two types of Breccia (volcanic breccia and sedimentary breccia) be distinguished from ...
A: A breccia is a rock made up of large (you can see them without a microscope), angular fragments of ...
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| sand dunes | 7/10/2006 |
Q: Does the formation of sand dunes have anything to do with plate tectonics?
A: The simple answer is, no. But in Geology nothing is simple. The real answer depends on where the ...
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| materials of the earth | 7/3/2006 |
Q: Are there any materials in the nucleur of the earth but the nikle and iron? -Is nucleur of the earth ...
A: We don’t really know what makes up the Earth’s core but we can infer an awful lot. We are sure that ...
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| florida | 6/24/2006 |
Q: Does this mean that central florida is a risky place to build a new home on? Especially a place that ...
A: Sorry Al, I can't help with that. I'm not an expert in the Geology of Florida. And I am not an ...
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| florida | 6/23/2006 |
Q: In central florida, usa, near the city of Sebring there are many lakes. I want to know what forces ...
A: Most lakes in Centrl Florida are called "Sinkhole Lakes". That is, they are caused when the soft ...
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| Gold Flow | 6/4/2006 |
Q: Mr. Reszka, I am a teacher who will be spending this summer working to suppliment my income and ...
A: I really can't help much with this except to say that I would expect the gold to winnow out pretty ...
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| recognizing rocks | 6/4/2006 |
Q: Followup To Question - ... What about telling the differences between granite, andesite, basalt, ...
A: About the limestone question....limestone can be very hard. Lithographic limestone is dense, smooth ...
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| recognizing rocks | 5/29/2006 |
Q: I'm having a lot of trouble identifying the basic rock types - sandstone and limestone I can do, but ...
A: The major way to tell the difference between the igneous rocks is through color and texture. At one ...
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| recognizing rocks | 5/23/2006 |
Q: I'm having a lot of trouble identifying the basic rock types - sandstone and limestone I can do, but ...
A: I assume you know the distinction but, just to be clear, granite and volcanic rocks are igneous, and ...
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| rocks | 5/20/2006 |
Q: What rock is made from lava?
A: Rocks that form from lava are called IGNEOUS Rocks. There are many kinds but usually you will find ...
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| What Kind of Rock do I have? | 5/18/2006 |
Q: I have found a rock, but it is no normal rock. It is perfectly round, and I have others also, there ...
A: Sounds like a pretty unusual stone. Without seeing, and handling, the stone it's pretty hard to ...
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| MINERALS | 5/17/2006 |
Q: HOW DO MINERALS FORM? I ALSO NEED MATERIALS FOR THIS QUESTON FOR A PROJECT.
A: “How do minerals form?” This sounds like a simple question but it really is very complicated, for ...
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| basalt | 5/8/2006 |
Q: what is the process that forms basalt?please
A: Basalt is the most abundant rock type on the surface of the Earth. Most of the oceanic basins are ...
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| Cobble stones | 5/1/2006 |
Q: I hope I am correct that I asked a question to you before. I my self a geology graduate and now days ...
A: I used the Mt. St. Helen example to give you an idea of how even large rocks can be moved, and ...
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| stratigraphy | 4/30/2006 |
Q: why the precambran basement is known as shield? is it an arbitrarily given name or has some reason ...
A: To answer this question you have to understand the early history of the Earth and how the crust ...
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| stratigraphy | 4/29/2006 |
Q: why the precambran basement is known as shield? is it an arbitrarily given name or has some reason ...
A: I've never seen the etymology for the word “shield”; at least not in its tectonic geology meaning. ...
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| Pebbles | 4/23/2006 |
Q: I my self a geology graduate according to what I have studied that the pebbles are formed due to the ...
A: Roundeed pebbles are formed by an erosional process called "SALTATION". That's where a rock is ...
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| geology | 4/16/2006 |
Q: why does marble have streaks of color in it.
A: Sorry for how long it took to get to this question. I had a computer problem; but I'm back now. ...
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| geology | 4/13/2006 |
Q: do u know what long curved cracks parallel to the surface is. Its a six letter word witht he 3rd ...
A: I think you might mean "joints". They are cracks in the Earth that don't show any appreciable ...
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| Earth's inner crust | 4/1/2006 |
Q: I have read some where earth inner core consist of molten lava. and it is said that inner core was ...
A: You are almost completely correct. The only real change I would add is that the Earth's core is two ...
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| continental drift.... | 2/4/2006 |
Q: Do you know if anyone has ever done any sort of simulation or prediction of what the world will look ...
A: Check out this site.....animations, globes, past worlds and future continental positions, background ...
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| frost wedging... further information | 2/3/2006 |
Q: Recently I asked a question about finding "puzzle rocks" that crumble into pieces and can be easily ...
A: I remember helping you with this question. Let's take your new questions one at a time: What ...
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| The Sky | 1/23/2006 |
Q: I dont even kno if this question doesnt belong here. Why is the sky blue?
A: That's a good question. The sky is blue because of the way light reacts to gases in the atmosphere. ...
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| oil and gas resevoirs and traps | 1/18/2006 |
Q: I was wondering if you could explain the role of permeability and porosity in creating oil and gas ...
A: First; do you know the difference between “porosity” and “permeability”? Porosity is the void ...
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| River rocks with fractures | 1/13/2006 |
Q: As a child, I explored the mountain streams of south-central Colorado. I remember finding, on one ...
A: What you are describing is an erosional process called “frost wedging”. What happens is that water ...
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| earthquiks | 12/17/2005 |
Q: how to find the center of earthquik from the sesmogram gets from three stations of sesmograph? how ...
A: Check out these sites. They will give you a detailed description of earthquakes and how to measure ...
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| Sulfur and Coal | 12/15/2005 |
Q: What and how sulfur is effect on coal? Why is it customer prefer coal with low sulfur instead of ...
A: When high sulfur (about %7) coal is burned the sulfur combines with oxygen to create sulfur dioxide. ...
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| structures | 12/5/2005 |
Q: Can you send me some information on structures for help on my research project? ...
A: I think you mean STRUCTURAL GEOLOGY. If that's the case then navigate to these sites. They are ...
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| Perlite | 12/1/2005 |
Q: Is Perlite considered to be a mineral?
A: Perlite is a silicate mineral. It is a type of volcanic glass that has a tiny drop of water in it. ...
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| geology | 11/30/2005 |
Q: Are there any rocks or minerals at the space? Which rocks usually have bigger grain, Sedimentry ...
A: Let's take your questions in order…. Are there any rocks or minerals at the space? Yes there are. ...
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| Topographical information | 11/28/2005 |
Q: I have to do a very short project for geology in which I explain topographical information for St. ...
A: I'm not sure what information you need so I'll just send along this website from the people who make ...
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| soil | 11/24/2005 |
Q: what are the features of the soil?
A: Soil is nothing more than very small pieces of rock. Wind, rain, running water, and ice all come ...
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| Trying to ID rock | 11/21/2005 |
Q: Is it possible to find Lake Superior Agates that far south in Michigan? I have been told that the ...
A: First, it almost certainly is NOT petrified wood. It doesn't look like it at all. However, strange ...
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| Mineral | 11/20/2005 |
Q: Why is gold so expensive? What makes minerals color? What is the difference between ROCKS and ...
A: Gold is so expensive because it is relatively rare and very difficult to get. Also, we like the ...
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| Gold Mining | 11/19/2005 |
Q: How does gold form in such large quantities underground. If larger and harder minerals are the ...
A: The current theory on Gold formation (well, really any metal formation) is that super heated water ...
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| Trying to ID rock | 11/18/2005 |
Q: I have a rock pictured in the following link that I am trying to identify, but cant seem to find ...
A: I looked at the rest of pictures...looks like a nice set of polished pebbles. The one you are ...
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| Carreer | 11/14/2005 |
Q: Who or what influenced you to be a geologist?
A: Well, I've always been interested in natural things and how they worked. I wondered why a mountain ...
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| Petroleum | 11/14/2005 |
Q: Which country has more petroleum?
A: In fact most of the world's petroleum is probably to be found in the world's oceans as offshore ...
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| Profit | 11/14/2005 |
Q: What has more profit, mining or having petroleum?
A: Your question depends on way too many variables to really answer. It depends on what you mine, the ...
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| Geological age definitions | 11/12/2005 |
Q: Are the "absolute known geological age" and "inferred geological age" common terms in geology? What ...
A: I think you might be referring to ABSOLUTE age and the RELATIVE age of a rock. They can be complex ...
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| Strange looking rock I found | 11/11/2005 |
Q: I found a very strange looking rock in my backyard in the Mississippi River Valley in southern Iowa ...
A: Certainly is a puzzler. This one's a little hard to identify by just it's picture. It could be a ...
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| minerals | 11/10/2005 |
Q: What is a very expensive mineral? (Except gold and diamond).
A: Most of the PLATINUM GROUP minerals are rarer and more costly than Gold. Platinum is around $900 ...
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| minerals | 11/10/2005 |
Q: For how long do you work with minerals? Do you think they are unique?
A: I've been a Geologist for 27 years now. Some of that time I have worked with minerals but I am NOT ...
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| minerals and rocks | 11/9/2005 |
Q: I would like to know what is the oldest rock you have ever found? If yes describe it. What is the ...
A: The oldest rock I've found is over 3.2 BILLION years old. It's a GRANITE and is light colored with ...
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| Minerals | 11/8/2005 |
Q: What is the rarest mineral you have ever found?
A: The rarest mineral I've ever found is called FLUORRICHTERITE. It belongs to a mineral group called ...
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| Rocks | 11/6/2005 |
Q: You've already answered a few questions for me, Juliana, but if you don't mind I have a couple ...
A: When geologists look at rocks we notice the color, texture, weight, minerals, structure, hardness, ...
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| Minerals | 11/2/2005 |
Q: I am a 7th grade student, and in Science we are studying minerals. We have to interview someone that ...
A: Let's take them one at time: 1)How do you tell if a rock is magnetic or not? If a magnet sticks to ...
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| Questions | 11/1/2005 |
Q: Im doing an interview and your feedback for the questions would be a big help...Thanks 1) How do ...
A: Lot's of questions, let's see about answering them. 1) How do you know when you find real gold and ...
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| Rocks, Minerals and Coral Reefs | 10/31/2005 |
Q: I already send you two e-mails, but I didn't present myself. Sorry! I know you already published two ...
A: Lots of questions…let's go. Each question is very large and I can't cover them adequately here. ...
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| Minerals | 10/31/2005 |
Q: What are most of the mines in the world made of?
A: I don't believe anyone has ever done a study of what is the most mined mineral in the world but if I ...
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| Coral Reef | 10/31/2005 |
Q: How do coral reef forms?
A: Coral reefs are formed from the skeletons of tiny animal called a POLYP that's not even as big as ...
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| Rusted Headstone | 10/22/2005 |
Q: Not sure this is in your area-my mother's headstone (glossy grey-not sure of the material) has been ...
A: When I want to clean iron stains from rock I use a product called "Iron Out". It's a powder. I mix ...
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| Gold Mines | 10/21/2005 |
Q: I am writing a children's story about someone living in an abandoned gold mine. What would they ...
A: I wish you all the luck in writing your story and I'll be glad to help. What do you need to live ...
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| Wegener | 10/17/2005 |
Q: I'm having an argument with a friend. he says that the scientific theories re continents ...
A: Actually most of the evidence he presented was pretty convincing and solid. He pointed out that ...
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| geological maps | 10/15/2005 |
Q: i have been looking for a person who can teach me something about contour and strike lines on the ...
A: This is a VERY large subject so I think I'll give you a couple of links that I know about that will ...
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| evolution | 10/13/2005 |
Q: i have always been in confusion about the metamorphic grades .can you please help me out in ...
A: There are really just three metamorphic grades; LOW, INTERMEDIATE and HIGH. They are separated by ...
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| Earth | 10/11/2005 |
Q: I don't know if you are the right person to ask but my question is that most of the planets in our ...
A: Your right, along with Sedna, Earth is the only planet not named through Greek or Roman myth. The ...
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| pink and white terraces | 10/7/2005 |
Q: Would i be right in saying that the pink and white terraces were formed by geysers. The groundwater ...
A: This is a good follow up. That is an accurate description of what happens in a geyser. Remember ...
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| Rock anomaly ? | 10/7/2005 |
Q: the holes are very round and exact same size, in the center of this stone is another close to round ...
A: The pictures are too blurry for me to tell much but what I could see leads me to suspect that they ...
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| pink and white terraces | 10/4/2005 |
Q: Do you think that the pink and white terraces in rotorua new zealand are part of the geology ...
A: The terraces are definitely geological occurrences; but not exactly in the way you think. They are ...
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| fossils | 9/28/2005 |
Q: Why are marine fossils found more often than land fossils?
A: For most of this Earth's existence it's surface has been covered, mostly, by marine seas. Usually ...
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| Geology | 9/21/2005 |
Q: What are some reason's why geology is important?
A: Serious question and it could take a long time to answer, but I'll give you the abbreviated version. ...
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| Area of Tectonic Plates | 8/27/2005 |
Q: Could you direct me to where I might find the area of the principal tectonic plates. I could not ...
A: There isn't much information on plate areas. I found this PDF that has the areas of at least some ...
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| differenced in rocks | 8/26/2005 |
Q: how do basalt and gabbro differ from andesite and diorite?
A: Here's a couple of sites that should help you out: ...
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| Rocks | 8/14/2005 |
Q: what is the method of most geologist used to identify the rocks or rock formations?
A: Good question but it's really far too complex to answer properly here. I was at a university for 8 ...
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| Rocks | 8/12/2005 |
Q: I live on a farm in Armstrong county western Pennsylvania USA. On one two or three acre section of ...
A: Pennsylvania Geology is a little outside my experitse but from what I know of the general geology of ...
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| sand | 8/7/2005 |
Q: My son asked me today (after spending a day at the beach yesterday) - What is sand?
A: In the simplest, and most common, case sand consists of small particles of quartz. Most beaches ...
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| Earthquakes | 7/25/2005 |
Q: I made a mistake. I found out that it's not energy. It's either magnitude or intensity that's the ...
A: The answer to your question is actually “Neither”. The “best” way is to use what's called the ...
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| Earthquakes | 7/21/2005 |
Q: I found out that energy is the best way to measure the size of earthquakes but why is that?
A: I'm not exactly sure what you mean by “energy” but I think you are referring to Richter method of ...
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| Rocks vs. minerals | 7/8/2005 |
Q: I teach 6th grade science. My students ALWAYS ask what is the difference between a rock and a ...
A: The difference is actually pretty simple but like most things in science “simple” can get complex in ...
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| Polar Wandering and the plate tectonic theory | 6/27/2005 |
Q: I'm stuck on a question that I have in geology. The questions are What is polar wandering? I can ...
A: Polar wandering: That's a concept that looks easy to understand but really isn't. I have yet to ...
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| What is it? | 6/22/2005 |
Q: I have a rock in the link listed below, that I got out of a gravel pit in Oxford, Michigan, that I ...
A: That's a good picture you have there Jeff. Number 13 looks to be an agate. We do have them in ...
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| Earth's core | 6/20/2005 |
Q: I recently saw a documental about the magnetic field on earth and the earth's core. It was said that ...
A: I don't know of any studies that were conducted on this aspect of the core. A quick search of the ...
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| Mesas of New Mexico and Arizona | 6/13/2005 |
Q: When driving through Arizona and New Mexico, you can see large mountains with perfectly flat tops ...
A: You're correct. They are called Mesa's; the big brother to Buttes, little brother to Plateaus. To ...
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| Appalachain Plateau | 6/8/2005 |
Q: How was the Appalachain Plateau formed?
A: The Appalachian Plateau was formed when rivers and streams began the process of eroding the original ...
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| Hotspring | 6/8/2005 |
Q: I live in a country where there is no volcanic activities. But, we have hotsprings here. How is this ...
A: You don't really need any volcanoes or volcanic activity to have hot springs. You just need a ...
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| crystals | 5/28/2005 |
Q: Can you explain how and why crystals are formed in terms my 8 year old son would understand.. ...
A: In simple terms crystals grow from SOLUTIONS. Solutions are mixtures of water, or other liquid, and ...
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| Geology | 5/25/2005 |
Q: I'm curious to know how pressure and temperature affect the physical properties of the inner layers ...
A: This could be an horrendously complicated question but let's simplify. Temperature and pressure can ...
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| black sand | 5/20/2005 |
Q: I was wondering about the origins of black sand beaches. I presume they come from the basaltic rock, ...
A: You are correct that the material that forms the black beaches is basalt. There are two types of ...
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| Earthquakes | 5/12/2005 |
Q: When an earthquake occurs, P waves and S waves travel in all directions, right? So what happens when ...
A: I'm going to assume you know the basics of seismic waves so I won't go into detail. Simply, P waves ...
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| grand canyon | 5/12/2005 |
Q: How was the grand canyon formed?
A: Like so many things in science this just doesn't have any easy answer. The simple fact is; we ...
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| Geology | 5/12/2005 |
Q: What is the largest crack in the world that can be seen by astronauts on the moon?
A: I assume that you're asking about natural formations like the Grand Canyon. Well, as far as I am ...
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| Oceans absolute? volume | 5/5/2005 |
Q: Perhaps this is more math than geo- IF the planet Earth was a smooth sphere(no ...
A: Not sure of your question here...if the Earth were a smooth sphere then there wouldn't be any ...
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| James Hutton | 4/26/2005 |
Q: i would like to ask you a question about james hutton. James Hutton discovered the principle of ...
A: I'm, not sure I, or anyone else, can give you a definitive answer. For much of his life Hutton was ...
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| volcano's | 4/8/2005 |
Q: my name is Elena and I attend Sacred Heart School. For our computer class we are submitting ...
A: “The most destructive volcano”….not as easy a question to answer as you might think. By that do you ...
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| Rocks | 4/4/2005 |
Q: Do you know of a source/place where I can have certain rocks analyzed or identified. I have a large ...
A: Sounds to me like you have a large piece of mica there. If it's very dark it's probably Biotite. ...
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| geology | 3/28/2005 |
Q: i don't know what is Moho? thanks you
A: The MOHO is a shortened term for Mohorovicic Discontinuity. That's the boundary between the crust ...
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| Reel in Rock | 3/27/2005 |
Q: What is the logical explanation for the "Reel in the Rock", supposedly found by Dan Jones in ...
A: Since I haven't seen the thing I can't make any good hypothesis. The only sites I can find about it ...
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| sand dunes | 3/25/2005 |
Q: Just found your internet site and maybe you will be one of the person to be able to solve the ...
A: I'm not sure what you mean by “the sand came up again.” Do you mean that it filled up the trench ...
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| Geodes | 3/18/2005 |
Q: I was wondering what medium is in a geode. Is it air or is it space(vacuum)?
A: Usually geodes are formed when gas collects in a pocket in rock that is still molten. When it ...
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| class project | 3/12/2005 |
Q: I am in 7th grade and I have to interview a geologist. My questions are: Where did you study? How ...
A: I'd be happy to answer your questions. “Where did you study?” – I got my Bachelor of Science in ...
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| Underground Water | 3/6/2005 |
Q: I live in central Florida. I have seen a lot of sinkholes in this area. I have seen tunnels at the ...
A: I'm not an expert in Florida groundwater problems so I can't help much. You might try the Florida ...
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| geology | 3/1/2005 |
Q: it's me again! Now i need to know about a shadow zone, can you tell me what it is and how scientists ...
A: Ok…here we go….we have a large earthquake happen. So large that vibrations from it travel right ...
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| Fools Gold | 2/23/2005 |
Q: How do you tell the difference between fools gold and real gold? I live in the mountains of So. ...
A: The best way to tell if you have gold is that it's much softer than pyrite (fool's gold). Flakes ...
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| Earth | 2/15/2005 |
Q: I'm trying to finish up a small science project and I'm stuck on a particular question. If I could ...
A: We know what the interior of the Earth is probably like through our use of seismic waves. I'm ...
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| Estimating the Age of the Earth | 2/14/2005 |
Q: I am interested in understanding as many independent ways of measuring the age of of our earth as ...
A: I'm not aware of a method to age-date the Earth through astronomical measurements. Normally ...
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| GOLD | 2/10/2005 |
Q: Sir, I am a novice prospector in a very low yield area. I live in Minong Wisc. We do however, have ...
A: Good luck on your prospecting! As to your questions: I do not know of any gold occurances, in ...
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| sial and sima | 2/8/2005 |
Q: I wonder if you know why sial and sima are not sial and simg as I presume that they derive from the ...
A: Lee, Actually they are acronyms and it's only coincidental that some of the letters appear to be ...
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| Geologic Map | 2/1/2005 |
Q: Do you know where I could find a geologic map of Kankakee County, Illinois on the internet? Thanks ...
A: You might want to try this URL: http://www.isgs.uiuc.edu/isgshome/geo-map.htm It's for the ...
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| dinosaur extinction | 1/11/2005 |
Q: how do you think dinosaurs became extinct? or is were there ever dinosaurs? thank you please ...
A: First, there certainly were dinosaurs. The fossil record is full of evidence (bones, tracks, hide, ...
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| Glaciation | 1/9/2005 |
Q: Recently I had occasion to visit Sudbury Ontario and was told that a massive meteor struck ...
A: It's a time thing. The last continental glaciation we had in this part of the world was about ...
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| 2 questions on rock formation and lava | 1/3/2005 |
Q: where does rock come from? What is the difference between magma and lava?
A: This is a very large question. Let's see if we can simplify it some. First let's say what a rock ...
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| Sunami Tidal Wave | 12/31/2004 |
Q: What is the difference between a tidal wave and a sunami? also, what is the chance of Hawaii ever ...
A: "Tidal Wave" and "Tsunami" are used interchangeably. I don't know where the term "Tidal Wave" got ...
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| polar wandering | 12/19/2004 |
Q: I have taken courses in geology but have always had a problem visualizing "polar wandering." Do you ...
A: “Polar wandering” is kind of a misnomer, well, at least it was until about the year 2000. Let me ...
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| shoreline morphology | 12/8/2004 |
Q: Have airborne lasers been used to analyze changing shoreline morphology? If so, can you point me to ...
A: Won't be able to help you too much but these sites might be useful. The first ones just give ...
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| half-life and radioactive dating | 12/5/2004 |
Q: ..or maybe I'm just making it harder than it is... 1st Some questions:Would you be willing to check ...
A: I've got your question and I will answer you, but I need just a little more time (the rest of my ...
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| Earths magnetic field | 12/4/2004 |
Q: My question is about the earths magnetic field.When we look at he ancient world, there is a lot of ...
A: Your hypothesis seems to be that, in the past, conditions on Earth made things feel lighter so that ...
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| Great Slave Lake shear zone | 11/14/2004 |
Q: I am trying to read a journal on The GSLsz (Can. J. Earth Sci. Vol. 40. 2003) by, David Eaton and J. ...
A: Here are some references on the 'Net that I use. They should help you. ...
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| sea floor spreading | 11/12/2004 |
Q: Scientists believe that the Atlantic Ocean is slowly becoming wider because of seafloor spreading. ...
A: This is a pretty big topic and has to do with PLATE TECTONICS. Maybe you've heard of it? Let me ...
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| geology | 11/6/2004 |
Q: What are metemorphic minerals as apposed to normal minerals?
A: Intense temperature and pressure will metamorphose a rock. It will also change some of the minerals ...
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| asking | 11/6/2004 |
Q: robert reszka Iam a student in unversity of sulaimani in kurdistan of iraq. I need some benefit ...
A: These are some mighty complicated subjects so rather than try to tackle them here let me give you a ...
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| porosity | 11/5/2004 |
Q: I was wondering what is the average porosity of clay, silt, and sand? Thanks
A: The answer might not be what most people would think. Your first though might be that sand would ...
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| Rocks | 10/22/2004 |
Q: What is the texture of quartzite?
A: Quartzite has a granular, medium-grained clastic texture. The particles are usually sand-sized and ...
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| A Smoke Rock | 10/21/2004 |
Q: 10/21/04 My eight year old granddaughter has to do a report on a Smokey Rock and I cannot find any ...
A: I'll need some more information if I'm to help. Is that the name of the rock? Is it the color or ...
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| Geology Question | 10/20/2004 |
Q: You answered my last question SO well that I hoped you could also tell me how intrusive activity and ...
A: In its simplest form all volcanism is due to intrusive activity. To make a long story short; molten ...
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| weathering | 10/12/2004 |
Q: I'm doing a project for my 9th grade science class and i"m suppose to ask an expert a question. I ...
A: Did you know that marble is another form of limestone? All you do is add lots of heat and pressure ...
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| Cleavage | 9/18/2004 |
Q: I am having difficulty determining a rock's cleavage and in some cases, crystal faces. Is this ...
A: Try this site it's pretty comprehensive and contains information on both cleavage and ...
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| Fulgurite? | 9/13/2004 |
Q: I have a question about the identity of a rock. Description: A deposit of Globular shaped ...
A: Without actually seeing the specimen I'd have to say that it does sound like you have a fulgurite. ...
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| Oxygen and life forms | 9/13/2004 |
Q: Earths atmosphere has been oxygen rich for what percent of earths history? Living organisms have ...
A: Those are questions that we are not completely sure of but we have enough data to give some pretty ...
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| mchigan geology | 9/9/2004 |
Q: what can you tell me about the geology of michigan's lower peninsula. i'm asking because i have to ...
A: That subject is a bit too large for this venue but I can give you a couple of sites and the name of ...
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| rare gold forms | 9/9/2004 |
Q: does gold ever come in the cubed form naturally,such as a cube of pyrite?someone claims to have seen ...
A: Gold belongs to the isometric system and one of it's shapes is the cube. So it is possible that ...
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| Erosion | 9/8/2004 |
Q: What will cause our land to most likely experience serious erosion in our future?
A: I'm sorry Mrs. Harrison. I can't really answer your question because I don't know where your land ...
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| Continent geology | 9/8/2004 |
Q: C. Robert Reszka I wondering if you can tell me two special features on each continent, please...i ...
A: Here are three sites that will give you a lot of information on the continents. Finding two things ...
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| Ice ages | 9/6/2004 |
Q: How long (in years) did the last ice age end? What was its duration? Have there been many 'ice ...
A: There's evidence for 10 glacial periods in the last 1 million years, and the last one started about ...
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| geology and literature | 8/25/2004 |
Q: You had made reference to the Jules Verne Novel, "Journey to the Center of the Earth." Do you ...
A: Unfortunately I can't find my copy of "Journey" (we moved recently and who knows what happened to ...
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| mountains | 8/16/2004 |
Q: What differentiates a mountain from a hill?
A: A hill is a natural elevation usually limited in extent and rounded in outline. Anything 300 meters ...
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| rock name | 8/11/2004 |
Q: what is the scientific name for the following: Formed broken down rock materials?
A: I think you must be refering to SEDIMENTARY rocks. These are made up of other rocks that have been ...
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| Looking for rock ID information | 8/6/2004 |
Q: I was wondering if you knew of a site on the internet where I can go to try to identify some rocks ...
A: Here are a few sites that I find useful... http://www.uwgb.edu/dutchs/PETROLGY/IdentifyRxMin.htm ...
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| geology in movies and literature | 8/4/2004 |
Q: For example: When the geologists enter the earth's crust at the Marianas Trench -is this a place ...
A: I haven't seen “The Core” yet so I can't give you an overall opinion. But I can give you some ...
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| FOUND ROCK | 8/4/2004 |
Q: I found a rock (about half the size of a loaf of bread) that is pink in color and has many ...
A: It sounds like you have a piece of Granite. Granites are usually light colored (translate that to ...
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| Temperature to melt rock | 8/2/2004 |
Q: I know there are many rocks, but like at what temperature does rock melt and become vitrified? God ...
A: Yours is a simple sounding question and the simple answer is; it depends. It depends on a host of ...
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| Coal | 7/30/2004 |
Q: I am a 6th grade teacher in Greenwood, Indiana preparing for my upcoming school year. I have ...
A: I'm not an expert in the Indiana coal fields but there is some general information that will help. ...
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| geology | 7/11/2004 |
Q: I am reading a paper about submarine deposition in island arc environments and it describes deposits ...
A: What's causing confusion here is the definition of”sandstone". It is nothing more than a rock made ...
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| Volcanolithic sediments | 7/11/2004 |
Q: What exactly are volcanolithic sediments and how do they differ from regular seimentary rocks?
A: I've never seen this term properly defined. It's used in many papers and from them you can infer a ...
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| Geology/astronomy | 7/6/2004 |
Q: At one time the earth had only one massive continent. What was the name of this single land mass?
A: Actually there were a couple of times, that we know of, when the landmasses were all assembled into ...
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| silver | 6/22/2004 |
Q: I would like to know how silver is made in the earth. and the monitrey value of the mineral. thank ...
A: There are an awful lot of sites out there, on the 'Net, but not much that I can find on silver ...
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| ground movement | 6/21/2004 |
Q: I live in Oregon and visit the coast near Newport Oregon. I have noticed areas that can be ...
A: This sounds like a very interesting landform feature however I am not an expert in Oregon geology. ...
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| triassic period | 6/21/2004 |
Q: could you please tell me about the geology and climate in the triassic period.
A: Here's some really good sites on geologic tiime. Check them all out and you should have all your ...
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| Mineral Necklaces | 6/14/2004 |
Q: I got a couple of minerals from a gem show and I was wondering if it would be safe for the gem to ...
A: Yes, it should be safe to drill a small hole in any of them, as long as they don't have any obvious ...
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| C. Robert Reszka JR | 6/12/2004 |
Q: I have just bought a house which was built in 1928. In the back yard there is a stone structure ...
A: I can give you a few suggestions for help. The first is the New jersey Geological Survey. Their ...
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| I need a geologist | 6/1/2004 |
Q: I know this is unusual but I came across this web site in my researching of a rock that I recently ...
A: Your rock sounds interesting. Sounds like it might be a glass of some kind but since you have such ...
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| Rarest mineral | 5/24/2004 |
Q: My sixth grade students are trying to research which is the rarest crystal on earth. Reliable ...
A: This is a really interesting question but I'm afraid I won't be of much help. I really don't think ...
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| Geology | 5/21/2004 |
Q: As a microbiology grad student, I've discovered evidence for some previously unknown, quite ...
A: Sorry Allen, I won't be of much help. I know of no listing of high alpine talus slopes. Most ...
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| geology | 5/21/2004 |
Q: which of the following is the oldest mountain range on Earth? Rockies, Andes or highlands, ...
A: The Scottish Highlands are older by far. They were uplifted about 4.7 billion years ago when there ...
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| diagenetic minirals | 5/21/2004 |
Q: sir give me information about diagnetic minerals and their textures send me the name as soon as ...
A: Any mineral that is formed by temperature or pressure after the deposition of eroded material is ...
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| diagenetic minirals | 5/21/2004 |
Q: give me the names of diagenetic minerals and their textures. plz do it quicly i have presentation ...
A: Any mineral that is formed by temperature or pressure after the deposition of eroded material is ...
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| gold | 5/20/2004 |
Q: how do you get the gold out of the rocks and other than being used as jewelry, what other purposes ...
A: Gold is found in many different formats; pure or almost pure metallic gold, or disseminated in ...
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| tectonic plates | 5/16/2004 |
Q: Do you have any idea where I can find out what the earth will look like in ... say 10 million years?
A: Can't really help much here Thomas. Your question is way too broad for this forum because it ...
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| strata before and after the k/t boundary | 4/23/2004 |
Q: i asked one of your fellow experts, George Ardies, who answered promply but not quite fully. is ...
A: This seems like a simple question but it really isn't. In order to answer it we have to know how ...
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| Acreage and creeks | 4/21/2004 |
Q: I am purchasing a 6.5 acre tract with a creek that runs through the middle of it. The land is not ...
A: I don't think I'll be able to help much on this question. Without seeing the property, or knowing ...
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| about lithosphere | 4/21/2004 |
Q: I have a project about lithosphere & I need a source that contains pics and text about lithosphere ...
A: I found some good references for the lithosphere that you might find useful. The first two have ...
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| why do mountains form in long... | 4/14/2004 |
Q: why do mountains form in long narrow ranges
A: To understand why mountains generally form in long, narrow ranges requires that we get into the ...
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| Dust | 4/1/2004 |
Q: I don't know if you know the answer to this.I have a question about the source of dust in your ...
A: The dust in your house comes from a lot of different things; anything from human skin cells, to ...
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| Caves: Stalagmites/Stalagtites | 3/19/2004 |
Q: I would like to know exactly what kind of environment that these caves grow in, where most of these ...
A: I'm not entirely sure of your question. Under the subject you write; “Caves: ...
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| radiometric dating | 3/4/2004 |
Q: I'm in the midst of the evolution/creation debate, and one question has gone unanwered. How can ...
A: To answer this properly would take WAY too long and be much too complex for this type of venue. To ...
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| Rocks vs Minerals | 3/2/2004 |
Q: My 7 yr old son asked me the difference between rocks and minerals. I don't have enough knowledge ...
A: A MINERAL is normally defined as a homogenous, inorganic solid. That means, in less complex words, ...
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| Aqua Geode??? | 2/22/2004 |
Q: .... My grandfather who was an amateur rock hound gave me a geode that weighs about 10 pounds and ...
A: Sounds like a good geode you have there. It probably is not filled with liquid. That should have ...
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| pangea | 2/21/2004 |
Q: could you give me some info on the supercontinent pangea for a school report?
A: In a nutshell; Pangea was a continental landmass that existed from about 230million years ago to ...
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| diamonds | 2/16/2004 |
Q: I was reading a pamplet about a diamond crater in Arkansas and it says that every year the diamonds ...
A: Yes it's true; there is a diamond mine in Arkansas. It's now the Crater of Diamonds State Park. I ...
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| strata ,strike and dip | 2/16/2004 |
Q: my concerns are about strike and dip..i can understand how to read strike and dip on a cross ...
A: You seem to understand what strike and dip are so we won't discuss that. Let's just look at the ...
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| Grand Canyon | 2/10/2004 |
Q: Why is it that parts of the grand canyon show signs of it being a slow moving river because of the ...
A: You've made a good observation but the problem is that nobody can answer you. We just don't know ...
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| geology- triassic period | 2/9/2004 |
Q: I would like to know what the various herbivores in the triassic period used to feed on...that is ...
A: triassic period Ammar Asks Hello there I would like to know what the various herbivores in the ...
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| geologic time scale | 1/13/2004 |
Q: I've got a question concerning the geologic time scale. How can absolute ages be estimated for rocks ...
A: There are really two types of dating; RELATIVE and ABSOLUTE. Relative dating is where we can ...
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| rocks | 12/17/2003 |
Q: I have an assignment very generally stating "a rock ia a hard substance made up of _____," and the ...
A: The answer to your question is "MINERALS". Very short answer I know, but sometimes very complex ...
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| Limestone | 9/4/2003 |
Q: What are the named methods/techniques of estimating how old a limstone is? And how would they work? ...
A: Good question Shani. It can be hard to date a chemical sedimentary rock like Limestone. We don't ...
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| Earths layers | 8/7/2003 |
Q: I know what the mantle, crust, asthensophere, and the lithosphere is but my question is what are the ...
A: Well, to make a VERY long story short, you can think of a relationship between them to be one of ...
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| Rock of Gibraltar | 8/7/2003 |
Q: This probably sounds ridiculous but here goes: My grandmother's brother served in WWI. When he ...
A: I'm not really an expert on the geology of Spain, but I know that it is made of coral reefs and ...
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| What is diabase? Thanks, E... | 6/22/2003 |
Q: What is diabase? Thanks, Ed
A: Diabase is a type of rock. If you've ever heard of GABBRO it's the same kind of rock but with a ...
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