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Sedimentary characteristics and fluid mechanism in the middle segment of the Taiwan Canyon

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Authors:Xu Shang; Wang Yingmin; Peng Xuechao; Yang Caihong; Li Hua; Cao Jianzhi; Zheng Guichun; Zhao Yanan
Author Affiliations:Primary:
China University of Petroleum, College of Geosciences, Beijing, China
Other:
Guangzhou Marine Geological Survey Bureau, China
SINOPEC, Shanghai Offshore Petroleum Branch, China
SINOCHEM, Petroleum Exploration and Production Corporation, China
Volume Title:Dizhi Lunping Geological Review
Source:Dizhi Lunping = Geological Review, 59(5), p.845-852. Publisher: Science Press, Beijing, China. ISSN: 0371-5736
Publication Date:2013
Note:In Chinese with English summary. 32 refs.; illus., incl. sects.
Summary:Fluid activity in the deep-water sedimentary unit of the high sinuous submarine channels, submarine canyons are the focus nowadays. This study uses high-resolution seismic data, combined with the geomorphologic features to discuss the sedimentary characteristics and fluid mechanism in the middle segment of the Taiwan Canyon. There is an inner levee located in the middle Taiwan Canyon. The internal structure of this inner levee is characterized by obviously onlap and lateral accretion. In meandering rivers and high sinuous submarine channels, due to the change of geomorphologic or the decrease of slope, the sediment started to unload. When it went through the bend, with the action of centrifugal force, massive sediment accumulated at the convex bank. Non-similar with the rivers and high sinuous submarine channels, the inner levee is located in the straight segment of the middle canyon, where has no geomorphologic condition to form the point bars. The inner levee can be interpreted as the product of interaction between down-and along-slope processes.
Subjects:Bottom currents; Currents; Fluid flow; Gravity flows; Levees; Marine environment; Marine sediments; Mass movements; Ocean floors; Sediments; Slumping; Submarine canyons; Submarine environment; Suspended materials; North Pacific; Northwest Pacific; Pacific Ocean; West Pacific; Formosa Strait; Taiwan Canyon
Coordinates:N210000 N223000 E1200000 E1180000
Record ID:783757-5
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute.
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