globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2019.115910
论文题名:
Continent-wide drainage reorganization in North America driven by mantle flow
作者: Wang H.; Gurnis M.; Skogseid J.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 530
语种: 英语
中文关键词: drainage system ; Gulf-of-Mexico-routing drainage basin ; mantle flow ; surface processes
英文关键词: Sediment transport ; Topography ; Continental scale ; Drainage systems ; Dynamic subsidences ; Dynamic topography ; Gulf of Mexico ; Landscape evolutions ; Mantle flow ; Surface process ; Catchments ; catchment ; drainage basin ; landscape evolution ; sediment transport ; slab ; subsidence ; topography ; Atlantic Ocean ; Gulf of Mexico ; North America
英文摘要: North America (NA) experienced pronounced changes in continental-scale drainage characterized by a reversal for much of the continental interior from north into the Canadian arctic to south into the Gulf of Mexico (GoM) from the Mid-Cretaceous to the Paleocene. However, the driving mechanism for these profound drainage reorganizations remain unexplained. Here, we investigate the role of mantle flow on landscape evolution, by coupling dynamic topography with surface processes. This approach enables us to simulate catchment dynamics and the rearrangement of sediment transport in response to mantle flow. We show that a west-to-east drainage reversal can be induced by the NA overriding the subducted Farallon plate. Moreover, augmented dynamic subsidence caused by a basalt-to-eclogite transformation of an oceanic plateau within the Farallon slab, depressed the GoM region and expanded the integrated drainage to the GoM since the Early Paleocene. For the first time, we show that dynamic topography can explain the north-to-south continental-scale drainage reorganization in North America. © 2019 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165334
Appears in Collections:气候变化与战略

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作者单位: Seismological Laboratory, California Institute of Technology, Pasadena, CA, United States; MOE Key Laboratory of Fundamental Physical Quantities Measurement, Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF, School of Physics, Huazhong University of Science and Technology, Wuhan, China; Institute of Geophysics, PGMF, Huazhong University of Science and Technology, Wuhan, China; Equinor ASA, Fornebu, Norway

Recommended Citation:
Wang H.,Gurnis M.,Skogseid J.. Continent-wide drainage reorganization in North America driven by mantle flow[J]. Earth and Planetary Science Letters,2020-01-01,530
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