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Question
hi professor, am a colledge student studying geology and my lecturer gave me an assignment, the question says; basaltic magmas are the primary material from which all other magmas evolved. Disucss the above in the light of recent advances in petrology.
i need your help sir, thank you.

Answer
Shettima:

What he is looking for is a discussion of magmatic differentiation.  Where from a single magma different magmas can form.

If all magmas start out in the mantle, how and why do they change on their way into the crust.

Differentiation can occur by partial crystallization and separation, assimilation, mixing, and replenishment.  They are discussed at the link below.  


http://en.wikipedia.org/wiki/Igneous_differentiation

and another

http://www.tulane.edu/~sanelson/eens212/magmadiff.htm

It sounds like he wants you to put the various methods together with recent advances in petrology. I don't know what "advances" he has discussed in class, so you'll have to fill in that missing piece of information.  Perhaps electron microscopy, or other techniques.

I hope this helps.

Keith

Careers: Geology

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Keith Patton

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Career and educational options open for fledgling geoscience students. What courses you should take to prepare for the current job market.

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24 years experience in Petroleum, Environmental Consulting and geological and geophysical computer software development.

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Registered Geologist in Texas
Certified mapping scientitst in RS

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