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University of Illinois at Urbana-Champaign
Elasticity of Mantle Minerals: Composition, Pressure and Temperature Dependence
Abstract
dc:descriptionAn extrapolation of our data to transition zone pressure and temperature indicates that the shear and compressional impedance contrasts associated with beta- →gamma-(Mg,Fe)2SiO4 transition are sufficient to produce a resolvable discontinuity at 520 km even with a moderate (30--50%) amount of olivine. A single olivine content can explain both the 400 and 520 km discontinuities. High velocity gradients in the transition zone is explained by pyroxene → majorite transition rather than adiabatic compression of minerals.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Geology
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2015
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Sinogeikin, Stanislav Valentinovich
- Contributors dc:contributor
-
- Bass, Jay D.
Subjects
dc:subject × 1Rights
- Language dc:language
- eng
Identifiers
dc:identifier.*- Identifier
- (MiAaPQ)AAI9945001
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/86553