The composition and geotherm of the lower mantle: constraints from the elasticity of silicate perovskite

被引：53

作者：

da Silva, CRS

Wentzcovitch, RM

Patel, A

Price, GD

Karato, SI

机构：

[1] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA

[2] Univ Minnesota, Minnesota Supercomp Inst, Minneapolis, MN 55455 USA

[3] UCL, Dept Geol Sci, London, England

[4] Univ Minnesota, Dept Geol & Geophys, Minneapolis, MN 55455 USA

来源：

PHYSICS OF THE EARTH AND PLANETARY INTERIORS | 2000年 / 118卷 / 1-2期

基金：

英国自然环境研究理事会; 美国国家科学基金会;

关键词：

geotherm; lower mantle; silicate perovskite;

D O I：

10.1016/S0031-9201(99)00133-8

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

A newly developed parameterization of the third-order isentropic finite strain equation of states (EOS) is used in conjunction with experimental data and theoretical results on MgSiO3 perovskite. New geotherms for the lower mantle are derived by comparison with preliminary reference earth model (PREM). The geotherms are adiabatic up to 1500 km depth and super-adiabatic thereafter. A description of the critical steps in obtaining the new parameterization is also given. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：103 / 109

页数：7

共 54 条

[1] A SEISMIC EQUATION OF STATE .2. SHEAR PROPERTIES AND THERMODYNAMICS OF THE LOWER MANTLE [J].