3D gravity modelling reveals off-axis crustal thickness variations along the western Gakkel Ridge (Arctic Ocean)
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- 作者：Mechita C. Schmidt-Aurscha ; Mechita.Schmidt-Aursch@awi.de" class="auth_mail" title="E-mail the corresponding author ; Wilfried Jokata ; b
- 关键词：Gakkel Ridge ; Gravity ; Melt generation ; Mid-ocean ridge ; Oceanic crust ; Magmatism
- 刊名：Tectonophysics
- 出版年：2016
- 出版时间：22 November 2016
- 年：2016
- 卷：691
- 期：part_PA
- 页码：85-97
- 全文大小：3581 K
文摘
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Thickness of oceanic crust is highly variable along and across axis.
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Perpendicular basement ridges are partly of tectonic rather than of volcanic origin.
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Spreading was amagmatic or low volcanic until chrons C5/C6.
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Separation of Greenland and Svalbard provoked enhanced magmatism in the West.
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Change of mantle convection triggered focussed magmatism in the East.