Major-element variability in the Hawaiian mantle plume

被引：359

作者：

Hauri, EH

机构：

[1] Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015

来源：

NATURE | 1996年 / 382卷 / 6590期

关键词：

D O I：

10.1038/382415a0

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：

Isotope ratios and concentrations of silica, titanium, aluminium, calcium, sodium and iron are correlated in shield-stage basaltic lavas erupted over the past three million years From eight Hawaiian volcanoes. These correlations indicate the presence of a component beneath Hawaii with a bulk composition which is distinct from typical mantle peridotite. This material is most probably recycled oceanic crust distributed within the Hawaiian plume as segregations of quartz-bearing garnet pyroxenite or eclogite, which yield silica-rich (dacitic) magmas on partial melting.

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页码：415 / 419

页数：5

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