气候变化领域集成服务门户(CCPortal): Tectonic evolution of strike-slip zones on continental margins and their impact on the development of submarine landslides (Storegga Slide, northeast Atlantic)

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DOI	10.1130/B35421.1
	Tectonic evolution of strike-slip zones on continental margins and their impact on the development of submarine landslides (Storegga Slide, northeast Atlantic)
	Song J.; Alves T.M.; Omosanya K.O.; Hales T.C.; Ze T.
发表日期	2020
ISSN	167606
起始页码	2397
结束页码	2414
卷号	132 期号:2021-11-12
英文摘要	Submarine landslides have affected the mid-Norwegian margin since the Last Glacial Maximum. However, the role of tectonic movements, and most especially fault reactivation, in generating landslides offshore Norway is largely unconstrained. This study uses high-quality three-dimensional seismic and borehole data to understand how landslide development is controlled by faults propagating within the uplifted south Modgunn arch. Variance and structural maps above the south Modgunn arch show that: (1) local scarps of recurrent landslides were formed close to the largest faults, and mainly above strike-slip faults; (2) distinct periods of fault generation were associated with tectonic events, such as the breakup of the northeast Atlantic Ocean, and those events forming the south Modgunn arch; and (3) important fluid-flow features coincide with faults and sill intrusions. In total, 177 faults were analyzed to demonstrate that fault throw values vary from 10 ms to 115 ms two-way traveltime (8 m to 92 m). We propose that the long-term activity of faults in the study area has contributed to fluid migration, weakened post-breakup strata, and controlled the development of submarine slope instability. In particular, strike-slip faults coincide with the locations of several Quaternary landslide scars near the modern seafloor. Similar processes to those documented in Norway may explain the onset of large-scale landslides on other continental margins. © 2020. All Rights Reserved.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184865
作者单位	3D Seismic Laboratory, School of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, United Kingdom; The Research Centre for Arctic Petroleum Exploration, Norwegian University of Science and Technology, Trondheim, 7491, Norway; Oasis Geoconsulting Limited, Lagos, Nigeria; Earth and Surface Processes Group, School of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, United Kingdom; Key Laboratory of Tectonics and Petroleum Resources, Ministry of Education, China University of Geosciences, Wuhan, 430074, China
推荐引用方式 GB/T 7714	Song J.,Alves T.M.,Omosanya K.O.,et al. Tectonic evolution of strike-slip zones on continental margins and their impact on the development of submarine landslides (Storegga Slide, northeast Atlantic)[J],2020,132(2021-11-12).
APA	Song J.,Alves T.M.,Omosanya K.O.,Hales T.C.,&Ze T..(2020).Tectonic evolution of strike-slip zones on continental margins and their impact on the development of submarine landslides (Storegga Slide, northeast Atlantic).Bulletin of the Geological Society of America,132(2021-11-12).
MLA	Song J.,et al."Tectonic evolution of strike-slip zones on continental margins and their impact on the development of submarine landslides (Storegga Slide, northeast Atlantic)".Bulletin of the Geological Society of America 132.2021-11-12(2020).