Internal deformation and kinematic indicators within a tripartite mass transport deposit, NW Argentina
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- 作者：Matheus S. Sobiesiaka ; matheus.sobiesiak@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Ben Knellera ; b.kneller@abdn.ac.uk" class="auth_mail" title="E-mail the corresponding author ; G. Ian Alsopa ; ian.alsop@abdn.ac.uk" class="auth_mail" title="E-mail the corresponding author ; Juan Pablo Milanab ; jpmilana@gmail.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：Mass-transport deposit ; Siltstone rafts ; Sandstone blocks ; Carboniferous ; Argentina ; Late Paleozoic Ice Age
- 刊名：Sedimentary Geology
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：344
- 期：Complete
- 页码：364-381
- 全文大小：8774 K
文摘
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Cerro Bola in NW Argentina provides superb outcrops through a seismic-scale MTD.
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The MTD is divided into 3 vertical zones based on a range of criteria.
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Basal shear surface is an irregular surface, where the flow interacted with the substrate.
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Sandstone blocks are sheared by the flow, with sheared sand incorporated into the flow as a series of blebs and stringers.
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Fold hinges, block long axes and secondary fabrics are used to constrain flow directions in the MTD.
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Three theoretical scenarios are proposed to explain the failure and origin of siltstone rafts and sandstone blocks.