URANIUM ABUNDANCE OF THE OCEANIC-CRUST

被引：16

作者：

FISHER, DE

机构：

[1] University of Miami, Rosenstiel School of Marine and Atmospheric Science, Miami

来源：

GEOCHIMICA ET COSMOCHIMICA ACTA | 1979年 / 43卷 / 05期

关键词：

D O I：

10.1016/0016-7037(79)90254-0

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：

Uranium contents of 67 oceanic basalts have been measured by fission track analysis. Average value for ridge and intraplate basalts is ~ 78 ppb, for the Easter Hot Line it is ~1600 ppb. Estimates of mantle concentrations derived from the ridge and intraplate samples are insufficient to account for the observed surface heat flow. The whole-Earth concentration of U is > 8 ppb. and < 33 ppb if all heat generated within the Earth reaches the surface. © 1979.

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页码：709 / &

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