Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071784 |
Opal-CT in chert beneath the toe of the Tohoku margin and its influence on the seismic aseismic transition in subduction zones | |
Kameda, Jun1; Okamoto, Atsushi2; Sato, Kiminori3; Fujimoto, Koichiro3; Yamaguchi, Asuka4; Kimura, Gaku5 | |
2017-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Thick accumulation of chert is a ubiquitous feature of old oceanic plates at convergent margins. In this study, we investigate chert fragments recovered by the Integrated Ocean Drilling Program expedition 343 at the Japan Trench where the 2011 Tohoku-Oki earthquake (M-w 9.0) occurred. This sample provides a unique opportunity to investigate in situ chert diagenesis at an active subduction margin and its influence on the kinematics of megathrust faulting. Our mineralogical analyses revealed that the chert is characterized by hydrous opal-CT and may therefore be highly deformable via pressure solution creep and readily accommodate shear strain between the converging plates at driving stresses of kilopascal order. As chert diagenesis advances, any further deformation requires stresses of >100MPa, given the increasing transport distances for solutes as represented in cherts on land. The chert diagenesis is thus related to the mechanical transition from a weakly to strongly coupled plate interface at this margin. |
英文关键词 | chert pressure solution creep asperity |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395652600011 |
WOS关键词 | OKI EARTHQUAKE ; PRESSURE SOLUTION ; TRENCH AXIS ; GOLCONDA ALLOCHTHON ; SILICEOUS SEDIMENTS ; PLATE-BOUNDARY ; JAPAN TRENCH ; SLIP ; DEFORMATION ; KINETICS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25898 |
专题 | 气候变化 |
作者单位 | 1.Hokkaido Univ, Grad Sch Sci, Sapporo, Hokkaido, Japan; 2.Tohoku Univ, Grad Sch Environm Studies, Sendai, Miyagi, Japan; 3.Tokyo Gakugei Univ, Fac Educ, Koganei, Tokyo, Japan; 4.Univ Tokyo, Atmosphere & Ocean Res Inst, Kashiwa, Chiba, Japan; 5.Tokyo Univ Marine Sci & Technol, Dept Marine Environm & Resources, Konan, Japan |
推荐引用方式 GB/T 7714 | Kameda, Jun,Okamoto, Atsushi,Sato, Kiminori,et al. Opal-CT in chert beneath the toe of the Tohoku margin and its influence on the seismic aseismic transition in subduction zones[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(2). |
APA | Kameda, Jun,Okamoto, Atsushi,Sato, Kiminori,Fujimoto, Koichiro,Yamaguchi, Asuka,&Kimura, Gaku.(2017).Opal-CT in chert beneath the toe of the Tohoku margin and its influence on the seismic aseismic transition in subduction zones.GEOPHYSICAL RESEARCH LETTERS,44(2). |
MLA | Kameda, Jun,et al."Opal-CT in chert beneath the toe of the Tohoku margin and its influence on the seismic aseismic transition in subduction zones".GEOPHYSICAL RESEARCH LETTERS 44.2(2017). |
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