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Giant Slab of Earth's Crust Found Near Core |
 May 30 2006, 03:44 PM
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#16
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 Senior Member  Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430  |
Minerals Go Dark Near Core Of Earth
Washington DC (SPX) May 30, 2006 Minerals crunched by intense pressure near Earth's core lose much of their ability to conduct infrared light, according to a new study from the Carnegie Institution's Geophysical Laboratory. http://www.terradaily.com/reports/Minerals...e_Of_Earth.html -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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May 30 2006, 05:02 PM
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#17
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Member Group: Members Posts: 624 Joined: 10-August 05 Member No.: 460 |
QUOTE (ljk4-1 @ May 30 2006, 09:44 AM)  Minerals Go Dark Near Core Of Earth Washington DC (SPX) May 30, 2006 Minerals crunched by intense pressure near Earth's core lose much of their ability to conduct infrared light, according to a new study from the Carnegie Institution's Geophysical Laboratory. http://www.terradaily.com/reports/Minerals...e_Of_Earth.html QUOTE (Goncharov) But so much of what we assume about the deep Earth relies on our models of heat transfer, and this study calls a lot of that into question. http://planetary.org/blog/article/00000581/ QUOTE (Emily) To put it another way, seismic studies aren't telling us about the volcanic layering in the crust, they're telling us something completely different -- how porosity and mineralogy change with depth.
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