3-D magnetotelluric image of offshore magmatism at the Walvis Ridge and rift basin
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- 作者：Marion Jegena ; Anna Avdeevaa ; 1 ; Christian Berndta ; Gesa Franza ; Bjö ; rn Heinckea ; 2 ; Sebastian Hö ; lza ; Anne Neskab ; Anna Martic ; Lars Planerta ; 3 ; J. Chena ; Heidrun Koppa ; Kiyoshi Babad ; Oliver Rittere ; Ute Weckmanne ; Naser Meqbele ; Jan Behrmanna
- 关键词：Passive margins ; Marine magnetotellurics ; Magmatic intrusions ; Hotspot ; Walvis Ridge ; Tristan da Cunha
- 刊名：Tectonophysics
- 出版年：2016
- 出版时间：30 June 2016
- 年：2016
- 卷：683
- 期：Complete
- 页码：98-108
- 全文大小：2858 K
文摘
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We report on marine 3D Magnetotelluric study on Walvis Ridge
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Resistivity model shows large scale resistive zone indicating the location where the hot-spot impinged on the crust prior to rifting.
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Smaller scale resistive region is attributed to magma ascent during rifting
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Rift basin is identified by low resistivity region