Morphology, sedimentary features and evolution of a large palaeo submarine canyon in Qiongdongnan basin, Northern South China Sea

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Morphology, sedimentary features and evolution of a large palaeo submarine canyon in Qiongdongnan basin, Northern South China Sea
	Li, Xiangquan 1,2,3; Fairweather, Luke 4; Wu, Shiguo 2; Ren, Jianye 1; Zhang, Hongjie 4; Quan, Xiayun 1; Jiang, Tao1 ; Zhang, Cheng 1; Su, Ming 1; He, Yunlong 1
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2013-01-30
卷号	62 页码:685-696
关键词	Submarine canyon Qiongdongnan basin Canyon morphology Canyon fills Canyon evolution
ISSN号	1367-9120
通讯作者	Li, XQ
中文摘要	The large Miocene-aged palaeo canyon that extents through the Qiongdongnan basin (QDNB) and Yinggehai basin (YGHB) of Northern South China Sea has been of considerable interest both economically and scientifically over the past decade. Stemmed from this, significant research has been employed into understanding the mechanism for its existence, incision, and sedimentary fill, yet debate remains. In the first case the canyon itself is actually quite anomalous. Alone from the size (over 570 km in length and more than 8 km in width (Yuan et al., 2009)), which is considerably more than most ancient deep-water channels (REFS), the canyon's sedimentary fill is also distinctly different. Some explanations have been given to explain the canyon's origin and existence, these include increased sediment supply from the Red River which is genetically linked to uplift of the Tibetan Plateau, lowstand turbidite and mass-transport activity, reactivation and dextral displacement of the Red River Fault zone inducing erosive gravity-flows, regional tilt of the QDNB and YGHB, paleo-seafloor morphology and seal-level fluctuations. With the application of new data obtained from interpretations of a large number of 2D seismic profiles, core and well log data, and tectonic and sedimentary analysis this contribution aims to: (I) Present models to explain the Canyon's sedimentary fill and basin plain deposits, which provided significant understanding of processes pre-, syn- and post-incision and; (2) review the plausibility and likelihood of each of the controlling mechanisms, hoping to shed light on this controversial aspect. We conclude that the final erosive event that shaped the canyon is dated at 5.5 Ma. The Canyon's unusual fill is a product of variation in the interaction between turbidity currents and MTD that blocked the canyon's axis, and the reduction in gravity flow energy through time; and therefore the complete succession represents one major erosive and cut event at 5.5 Ma and thereafter multi-gravity currents fills unlike in most slope channel-fills. (C) 2012 Elsevier Ltd. All rights reserved.
英文摘要	The large Miocene-aged palaeo canyon that extents through the Qiongdongnan basin (QDNB) and Yinggehai basin (YGHB) of Northern South China Sea has been of considerable interest both economically and scientifically over the past decade. Stemmed from this, significant research has been employed into understanding the mechanism for its existence, incision, and sedimentary fill, yet debate remains. In the first case the canyon itself is actually quite anomalous. Alone from the size (over 570 km in length and more than 8 km in width (Yuan et al., 2009)), which is considerably more than most ancient deep-water channels (REFS), the canyon's sedimentary fill is also distinctly different. Some explanations have been given to explain the canyon's origin and existence, these include increased sediment supply from the Red River which is genetically linked to uplift of the Tibetan Plateau, lowstand turbidite and mass-transport activity, reactivation and dextral displacement of the Red River Fault zone inducing erosive gravity-flows, regional tilt of the QDNB and YGHB, paleo-seafloor morphology and seal-level fluctuations. With the application of new data obtained from interpretations of a large number of 2D seismic profiles, core and well log data, and tectonic and sedimentary analysis this contribution aims to: (I) Present models to explain the Canyon's sedimentary fill and basin plain deposits, which provided significant understanding of processes pre-, syn- and post-incision and; (2) review the plausibility and likelihood of each of the controlling mechanisms, hoping to shed light on this controversial aspect. We conclude that the final erosive event that shaped the canyon is dated at 5.5 Ma. The Canyon's unusual fill is a product of variation in the interaction between turbidity currents and MTD that blocked the canyon's axis, and the reduction in gravity flow energy through time; and therefore the complete succession represents one major erosive and cut event at 5.5 Ma and thereafter multi-gravity currents fills unlike in most slope channel-fills. (C) 2012 Elsevier Ltd. All rights reserved.
学科主题	Geology
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geosciences, Multidisciplinary
研究领域[WOS]	Geology
关键词[WOS]	GULF-OF-MEXICO ; CONTINENTAL-MARGIN ; MISSISSIPPI CANYON ; CHANNEL SYSTEM ; RED RIVER ; ARCHITECTURE ; DYNAMICS ; GEOMORPHOLOGY ; STRATIGRAPHY ; YINGGEHAI
收录类别	SCI
原文出处	10.1016/j.jseaes.2012.11.019
语种	英语
WOS记录号	WOS:000315076500054
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16310]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.China Univ Geosci, Minist Educ, Key Lab Tecton & Petr Resources, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.SOA, Key Lab Submarine Geosci, Hangzhou 310012, Zhejiang, Peoples R China 4.Univ Aberdeen, Dept Geol, Aberdeen AB24 3UE, Scotland
推荐引用方式 GB/T 7714	Li, Xiangquan,Fairweather, Luke,Wu, Shiguo,et al. Morphology, sedimentary features and evolution of a large palaeo submarine canyon in Qiongdongnan basin, Northern South China Sea[J]. JOURNAL OF ASIAN EARTH SCIENCES,2013,62:685-696.
APA	Li, Xiangquan.,Fairweather, Luke.,Wu, Shiguo.,Ren, Jianye.,Zhang, Hongjie.,...&Wang, Dawei.(2013).Morphology, sedimentary features and evolution of a large palaeo submarine canyon in Qiongdongnan basin, Northern South China Sea.JOURNAL OF ASIAN EARTH SCIENCES,62,685-696.
MLA	Li, Xiangquan,et al."Morphology, sedimentary features and evolution of a large palaeo submarine canyon in Qiongdongnan basin, Northern South China Sea".JOURNAL OF ASIAN EARTH SCIENCES 62(2013):685-696.