DOI: 10.1002/2015GL063917
论文题名: Mechanism for normal faulting in the subducting plate at the Mariana Trench
作者: Zhou Z. ; Lin J. ; Behn M.D. ; Olive J.-A.
刊名: Geophysical Research Letters
ISSN: 0094-9529
EISSN: 1944-9260
出版年: 2015
卷: 42, 期: 11 起始页码: 4309
结束页码: 4317
语种: 英语
英文关键词: Mariana Trench
; normal faulting
; slab pull
; subducting plate
Scopus关键词: Bathymetry
; Geodynamics
; Tectonics
; Geodynamic modeling
; Mariana trench
; Multibeam bathymetry
; Normal faulting
; Seafloor bathymetry
; Slab pull
; Subducting plate
; Tectonic forcing
; Faulting
英文摘要: We investigate the mechanisms of normal fault initiation and evolution in the subducting Pacific Plate near the Mariana Trench, through bathymetry analysis and geodynamic modeling. We model the subducting plate as an elastoplastic slab subjected to tectonic forcing at the trench, including vertical load, bending moment, and horizontal tensional force. In our simulations, normal faults initiate within the outer rise region and reach maximum throw toward the trench. This result holds over a wide range of tectonic forcing and is consistent with observations of the Challenger Deep region, where multibeam bathymetry data indicate faults initiate near the outer rise at 70-110 km from the trench and reach maximum throw at 10-35 km from the trench. However, models require a horizontal tensional force with magnitude comparable to axial vertical load to jointly explain the observed seafloor bathymetry, location of maximum normal fault throw, and prevalence of normal faults dipping toward the trench. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934440712&doi=10.1002%2f2015GL063917&partnerID=40&md5=c095c2563e6a8f445d15c2e8afafcc13
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9144
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: State Key Laboratory of Marine Geology, School of Ocean and Earth Sciences, Tongji University, Shanghai, China
Recommended Citation:
Zhou Z.,Lin J.,Behn M.D.,et al. Mechanism for normal faulting in the subducting plate at the Mariana Trench[J]. Geophysical Research Letters,2015-01-01,42(11).