CERIUM LEAD AND LEAD-ISOTOPE RATIOS IN ARC MAGMAS AND THE ENRICHMENT OF LEAD IN THE CONTINENTS

被引：339

作者：

MILLER, DM

GOLDSTEIN, SL

LANGMUIR, CH

机构：

[1] COLUMBIA UNIV, PALISADES, NY 10964 USA

[2] MAX PLANCK INST CHEM, D-55020 MAINZ, GERMANY

来源：

NATURE | 1994年 / 368卷 / 6471期

关键词：

D O I：

10.1038/368514a0

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：

Lead is anomalously enriched in the Earth's continental crust, and in the magmas that give rise to new continental crust at convergent margins. A detailed study of volcanic rocks from the Aleutian island arc shows that this enrichment is a continuing process, and results from the efficient non-magmatic transfer of mantle-derived lead into the source of convergent-margin magmas. This process, acting through time, can also account for the pervasive depletion of lead in the oceanic mantle.

引用

页码：514 / 520

页数：7

共 66 条

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