EXTRACTION OF MID-OCEAN-RIDGE BASALT FROM THE UPWELLING MANTLE BY FOCUSED FLOW OF MELT IN DUNITE CHANNELS

被引：668

作者：

KELEMEN, PB ^{[1
]}

SHIMIZU, N ^{[1
]}

SALTERS, VJM ^{[1
]}

机构：

[1] FLORIDA STATE UNIV, NHMFL, TALLAHASSEE, FL 32310 USA

来源：

NATURE | 1995年 / 375卷 / 6534期

关键词：

D O I：

10.1038/375747a0

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：

Like residual peridotites from mid-ocean ridges, peridotites from the mantle section of the Oman ophiolite are far from equilibrium with mid-ocean-ridge basalt (MORB). By contrast, dunites from Oman are close to equilibrium with MORB, indicating that they were conduits for focused melt flow. Formation of dunite conduits by porous flow is sufficient to explain extraction of MORB from the mantle, and fracture mechanisms may not be necessary in this process.

引用

页码：747 / 753

页数：7

共 58 条

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