THE LARGE-SCALE STRUCTURE OF CONVECTION IN THE EARTHS MANTLE

被引：82

作者：

OLSON, P ^{[1
]}

SILVER, PG ^{[1
]}

CARLSON, RW ^{[1
]}

机构：

[1] CARNEGIE INST WASHINGTON, DEPT TERR MAGNETISM, WASHINGTON, DC 20015 USA

来源：

NATURE | 1990年 / 344卷 / 6263期

关键词：

D O I：

10.1038/344209a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The Earth's mantle is undergoing subsolidus thermal convection, driven by internal radiogenic heat sources and heat conducted from the outer core. Seismic tomographic images reveal a large-scale pattern of convection in the upper mantle compatible with surface plate motions, demonstrating the central role of mantle convection in tectonics. A circum-Pacific ring of descending flow extends throughout the lower mantle. The most controversial issue is the amount of mass exchanged between the upper and lower mantle. © 1990 Nature Publishing Group.

引用

页码：209 / 215

页数：7

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