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Deformation and faulting of subduction overriding plate caused by a subducted seamount
Ding, Min; Lin, Jian; 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.
2016
发表期刊GEOPHYSICAL RESEARCH LETTERS
卷号43期号:17页码:8936-8944
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.
部门归属[Ding, Min] Woods Hole Oceanog Inst, MIT WHOI Joint Program, Woods Hole, MA 02543 USA; [Ding, Min] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA; [Lin, Jian] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China; [Lin, Jian] Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA ; 边缘海地质
关键词Seamount Overriding Plate Elastoplasticity Fault Formation Earthquakes
学科领域Geology
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15322
专题中科院边缘海地质重点实验室
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.
推荐引用方式
GB/T 7714
Ding, Min,Lin, Jian,Lin, J ,et al. 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,Lin, J ,&Lin, J .(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.
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