Deformation, annealing, reactive melt percolation, and seismic anisotropy in the lithospheric mantle beneath the southeastern Ethiopian rift: Constraints from mantle xenoliths from Mega
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- 作者：André ; a Tommasia ; andrea.tommasi@umontpellier.fr" class="auth_mail" title="E-mail the corresponding author ; Virginie Baptistea ; Alain Vaucheza ; Benjamin Holtzmanb
- 关键词：Rifting ; Mantle deformation ; Reactive melt percolation ; Crystal preferred orientations ; Seismic anisotropy
- 刊名：Tectonophysics
- 出版年：2016
- 出版时间：6 July 2016
- 年：2016
- 卷：682
- 期：Complete
- 页码：186-205
- 全文大小：16700 K
文摘
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Mantle xenoliths from Mega have dominantly coarse porphyroclastic microstructures.
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Extensive, but spatially heterogeneous refertilization of the mantle lithosphere
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Variable intensity of static recrystallization, not simply correlated to metasomatism
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The xenoliths' seismic anisotropy is weak with a ‘normal’ orthorhombic pattern.
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Metasomatism patterns change along the East African rift system.