Melt generation at volcanic continental margins: no need for a mantle plume?

被引：85

作者：

van Wijk, JW ^{[1
]}

Huismans, RS ^{[1
]}

ter Voorde, M ^{[1
]}

Cloetingh, SAPL ^{[1
]}

机构：

[1] Vrije Univ Amsterdam, Fac Earth Sci, NL-1081 HV Amsterdam, Netherlands

来源：

GEOPHYSICAL RESEARCH LETTERS | 2001年 / 28卷 / 20期

关键词：

D O I：

10.1029/2000GL012848

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Melt generation in a rifting environment is studied using a dynamic 2-D finite element model. The lithosphere is extended to large, realistic thinning factors assuming a mantle temperature of 1333 degreesC. The focussing of deformation results in a distribution of thinning factors along the margin at breakup time consistent with observations. The timing of melt production (late synrift) and the amounts of melt are consistent with observations at volcanic margins. The dynamical. processes related to lithospheric rifting enhance the. produced melt volumes sufficiently to explain the sometimes enigmatic melt volumes found at volcanic margins.

引用

页码：3995 / 3998

页数：4

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