The Caroline Ridge fault system and implications for the bending-related faulting of incoming oceanic plateaus

doi:10.1016/j.gr.2020.11.018

IOCAS-IR > 海洋地质与环境重点实验室

	The Caroline Ridge fault system and implications for the bending-related faulting of incoming oceanic plateaus
	Zhang, Zhengyi 1,2,3; Dong, Dongdong1,2,3 ; Sun, Weidong3,4 ; Zhang, Guangxu 1,3
	2021-04-01
发表期刊	GONDWANA RESEARCH
ISSN	1342-937X
卷号	92 页码:133-148
通讯作者	Dong, Dongdong(dongdongdong@qdio.ac.cn)
摘要	The latest multichannel seismic data from the Yap subduction zone is presented to investigate the Caroline Ridge fault system, developed by faulting and bending processes within the incoming oceanic plateau. We reveal that horst and graben structures exist along the entire incoming Caroline Ridge adjacent to the trench and that pervasive bending-related faults trending-N30 degrees E have developed subparallel to the trench. However, the widths of the horst and graben structures decrease gradually from north to south. The two-stage ancient abyssal hill fabrics overlap the incoming Caroline Ridge. Abyssal hill faults trending-N65 degrees W present large trench-ridge angles (85-90 degrees); in the southern segment, abyssal hill faults trending-N70 degrees E have relatively low trench-ridge angles (-35-40 degrees). From the Caroline Ridge to the horst and graben structures, the topography decreases, and slump bodies with deformed internal reflections have developed above an irregular reflector. Little stable pelagic sediment with horizontal reflectors accumulates on the horst and graben structures, suggesting that the faulting and bending processes involve long and intense tectonic processes that affect the sedimentary environment. The sedimentary strata and fault distributions differ between the North and South Caroline Ridge, which is primarily attributable to the different rifting processes. Furthermore, we propose that N65 degrees W-trending ancient faults sufficiently decrease the yield strength of the incoming Caroline Ridge to facilitate the bending-related faulting. During subduction, the incoming North Caroline Ridge that has a large degree of rifting and the Sorol Trough, which has a thin crust, may resist less flexural bending and generate the wide horst and graben structures. The ancient faults and rifting model of incoming oceanic plateaus play a significant role in bending-related faulting (c) 2021 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
关键词	Incoming oceanic plateau Yap subduction zone Fault system Slump bodies Rifting Bending-related faulting
DOI	10.1016/j.gr.2020.11.018
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41976051] ; National Natural Science Foundation of China[91958211] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Key Research Program of Center for Ocean Mega Science of CAS[COMS2019Q10] ; National Programme on Global Change and Air-Sea Interaction[GASI-GEOGE-01]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000620939400004
出版者	ELSEVIER
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/169610
专题	海洋地质与环境重点实验室
通讯作者	Dong, Dongdong
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zhang, Zhengyi,Dong, Dongdong,Sun, Weidong,et al. The Caroline Ridge fault system and implications for the bending-related faulting of incoming oceanic plateaus[J]. GONDWANA RESEARCH,2021,92:133-148.
APA	Zhang, Zhengyi,Dong, Dongdong,Sun, Weidong,&Zhang, Guangxu.(2021).The Caroline Ridge fault system and implications for the bending-related faulting of incoming oceanic plateaus.GONDWANA RESEARCH,92,133-148.
MLA	Zhang, Zhengyi,et al."The Caroline Ridge fault system and implications for the bending-related faulting of incoming oceanic plateaus".GONDWANA RESEARCH 92(2021):133-148.

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