DOI: 10.1002/2016GL068050
论文题名: Mantle-induced subsidence and compression in SE Asia since the early Miocene
作者: Yang T. ; Gurnis M. ; Zahirovic S.
刊名: Geophysical Research Letters
ISSN: 0094-9295
EISSN: 1944-9026
出版年: 2016
卷: 43, 期: 5 起始页码: 1901
结束页码: 1909
语种: 英语
英文关键词: basin inversion
; basin subsidence
; deforming plate
; SE Asia
; slab avalanche
Scopus关键词: Deformation
; Floods
; Subsidence
; Basin inversions
; Deforming plate
; Eustatic sea level
; Global sea levels
; Large scale basins
; Mantle discontinuities
; SE Asia
; Slab avalanches
; Sea level
英文摘要: Rift basins developed extensively across Sundaland, the continental core of Southeast Asia, since the Eocene. Beginning in the early Miocene, basins in southern Sundaland experienced widespread synchronous compression (inversion) and marine inundation, despite a large drop in long-term global sea level. The mechanism for this large-scale synchronous regional sea level rise, basin inversion, and subsidence is not well understood and contrary to expectations from traditional basin models and eustatic sea level trends. We present geodynamic models of mantle convection with both deformable and rigid plate reconstructions to investigate this enigma. Models suggest that a slab stagnates within the transition zone beneath Southeast Asia before the Miocene. The stagnant slab penetrated through the 660 km mantle discontinuity during the early Miocene and formed a slab avalanche event, due to continuous subduction and accumulation of negatively buoyant slabs. This avalanche may have induced large-scale marine inundation, regional compression, and basin inversion across southern Sundaland. We argue mantle convection induced large-scale basin compression, in contrast to conventional plate margin-induced compression; this suggests mantle convection may exert a much stronger control on surface processes than previously recognized. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959479504&doi=10.1002%2f2016GL068050&partnerID=40&md5=0709cbc4e5178123b5bd98c6c36ab638
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10258
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Seismological Laboratory, California Institute of Technology, Pasadena, California, United States
Recommended Citation:
Yang T.,Gurnis M.,Zahirovic S.. Mantle-induced subsidence and compression in SE Asia since the early Miocene[J]. Geophysical Research Letters,2016-01-01,43(5).