Simulation of late Cenozoic South American flat-slab subduction using geodynamic models with data assimilation
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- 作者：Jiashun Hu ; jhu16@illinois.edu" class="auth_mail" title="E-mail the corresponding author ; Lijun Liu ; Armando Hermosillo ; Quan Zhou
- 关键词：South America ; flat slab ; aseismic ridge ; oceanic plateau ; suction force ; seafloor age
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：15 March 2016
- 年：2016
- 卷：438
- 期：Complete
- 页码：1-13
- 全文大小：6364 K
文摘
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We construct 3D models to simulate South American subduction since 100 Ma.
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The effect of seafloor age results in slab dip angle distribution opposite to observed.
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Dynamic suction from the overriding plate has a long-wavelength and prolonged effect on reducing slab dip angle.
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Subducting oceanic plateau and aseismic ridges effectively flatten the slab at local scales.
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Formation of South American flat slabs represents a multi-scale and multi-physics process.