Melt distribution in mantle rocks deformed in shear

被引：124

作者：

Zimmerman, ME ^{[1
]}

Zhang, SQ ^{[1
]}

Kohlstedt, DL ^{[1
]}

Karato, S ^{[1
]}

机构：

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

来源：

GEOPHYSICAL RESEARCH LETTERS | 1999年 / 26卷 / 10期

关键词：

D O I：

10.1029/1999GL900259

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Shear experiments on olivine-basalt aggregates provide compelling evidence that the dynamic distribution of melt is controlled by the magnitude and orientation of the differential stress. Our results suggest that deformed, partially molten upper mantle rocks will have highly anisotropic physical properties including seismic wave velocities and melt permeability. In addition, our results provide a basis for interpreting geophysical observations, such as shear-wave splitting and for modeling melt migration processes beneath mid-ocean ridges, specifically focused flow of melt toward the ridge axis.

引用

页码：1505 / 1508

页数：4

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