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1 Geology Department, University of Illinois at Urbana-Champaign
1301 West
Green Street, Urbana, IL 61801, USA
E-mail:
jaybass{at}uiuc.edu
2 Department of Geosciences and Chemistry Department
Mineral Physics
Institute, Stony Brook University
Stony Brook, NY 11794-2100,
USA
E-mail:
jparise{at}notes.cc.sunysb.edu
Very few rocks on the Earth's surface come from below the crust. In fact, most of Earth's interior is unsampled, at least in the sense that we do not have rock samples from it. So how do we know what is down there? Part of the answer comes from laboratory and computer experiments that try to recreate the enormous pressure-temperature conditions in the deep Earth and to measure the properties of minerals under these conditions. This is the realm of high-pressure mineral physics and chemistry. By comparing mineral properties at high pressures and temperatures with geophysical observations of seismic velocities and density at depth, we get insight into the mineralogy, composition, temperature, and deformation within Earth's interior, from the top of the mantle to the center of the planet.
KEYWORDS: Earth's interior, mineral physics, mantle, core, high pressure
This article has been cited by other articles:
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J. D. Bass, S. V. Sinogeikin, and B. Li Elastic Properties of Minerals: A Key for Understanding the Composition and Temperature of Earth's Interior Elements, June 1, 2008; 4(3): 165 - 170. [Abstract] [Full Text] [PDF] |
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