Deformation and faulting of subduction overriding plate caused by a subducted seamount

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	Deformation and faulting of subduction overriding plate caused by a subducted seamount
	Ding, Min; Lin, Jian
刊名	GEOPHYSICAL RESEARCH LETTERS
	2016
卷号	43 期号:17 页码:8936-8944
关键词	seamount overriding plate elastoplasticity fault formation earthquakes
通讯作者	Lin, J (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China. ; Lin, J (reprint author), Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA.
中文摘要	We conducted numerical experiments to simulate elastoplastic deformation of the overriding plate caused by a subducted seamount. Calculations revealed development of a distinct pair of fault-like shear zones, including a landward dipping forethrust fault initiated from the seamount top and a seaward dipping backthrust fault from the landward base of the seamount. Significant dome-shaped surface uplift was predicted above the thrust faults. Lesser-developed seaward dipping backthrust faults were calculated to develop under certain conditions. The overriding plate was calculated to deform in two stages: In Stage I, elastic deformation leads to the formation of fault-like shear zones. After major faults have cut through the entire plate, plastic deformation on faults dominates Stage II. On the subduction interface, compressional normal stress was calculated to increase on the landward leading flank of the seamount and decrease on the seaward trailing flank. These changes, together with associated stress singularities at seamount edges, could affect earthquake processes.
学科主题	Geology
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15322]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Ding, Min,Lin, Jian. Deformation and faulting of subduction overriding plate caused by a subducted seamount[J]. GEOPHYSICAL RESEARCH LETTERS,2016,43(17):8936-8944.
APA	Ding, Min,&Lin, Jian.(2016).Deformation and faulting of subduction overriding plate caused by a subducted seamount.GEOPHYSICAL RESEARCH LETTERS,43(17),8936-8944.
MLA	Ding, Min,et al."Deformation and faulting of subduction overriding plate caused by a subducted seamount".GEOPHYSICAL RESEARCH LETTERS 43.17(2016):8936-8944.