Middle Miocene mound-shaped sediment packages on the slope of the Xisha carbonate platforms, South China Sea: Combined result of gravity flow and bottom current

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	Middle Miocene mound-shaped sediment packages on the slope of the Xisha carbonate platforms, South China Sea: Combined result of gravity flow and bottom current
	Tian, Jie1,2 ; Wu, Shiguo 3; Lv, Fuliang 4; Wang, Dawei 1; Wang, Bin 4; Zhang, Xinyuan1,2 ; Ma, Benjun1,2
刊名	DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
	2015-12-01
卷号	122 期号:2015 页码:172-184
关键词	Mound-shaped sediment packages Gravity flow Bottom current Xisha carbonate platforms South China Sea
英文摘要	Deep-water mound-shaped sediment packages on the northern slope of the Xisha carbonate platforms in the northern South China Sea were analyzed by integrating high-resolution multi-channel seismic and drilling data. The mounds are distributed in the Beijiao depression of the Qiongdongnan Basin within the T41-T40 seismic horizons, which correspond to the middle Miocene. Mound-shaped reflections were identified both in the NE-SW and NW-SE oriented seismic profiles. The mound shapes are most prominent in the center of the NW-SE oriented seismic profiles, and the undulating tops flatten out towards the NW and SE. Similar reflections are mostly asymmetric, with steeper eastern flanks in the NE-SW oriented seismic profiles, and they are mostly round in shape. The wave impedance from the inversion calculation is 6-8 x 10(6) kg/(m(2).s). It is much lower than that of the reef reservoir in the LH11-1 Reef Oilfield. Paleogeographic analysis shows that the Xisha uplift was dominated by tropical shallow carbonate platforms, while the Beijiao depression became a bathyal environment in the middle Miocene. Drilling data confirmed that the mound-shaped sediment packages are mainly composed of calcareous mudstone. Therefore, we infer that the mound-shaped sediment packages could be reef complexes or they were presumably built by combined gravity flow and bottom current. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
WOS记录号	WOS:000367106500017
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/86645]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Sch Earth Sci, Being 100049, Peoples R China 3.Sanya Inst Deep Sea Sci & Engn, Lab Marine Geophys & Georesource, Sanyo 572000, Peoples R China 4.CNPC, Hangzhou Inst Geol, Hangzhou 310000, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Tian, Jie,Wu, Shiguo,Lv, Fuliang,et al. Middle Miocene mound-shaped sediment packages on the slope of the Xisha carbonate platforms, South China Sea: Combined result of gravity flow and bottom current[J]. DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,2015,122(2015):172-184.
APA	Tian, Jie.,Wu, Shiguo.,Lv, Fuliang.,Wang, Dawei.,Wang, Bin.,...&Ma, Benjun.(2015).Middle Miocene mound-shaped sediment packages on the slope of the Xisha carbonate platforms, South China Sea: Combined result of gravity flow and bottom current.DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,122(2015),172-184.
MLA	Tian, Jie,et al."Middle Miocene mound-shaped sediment packages on the slope of the Xisha carbonate platforms, South China Sea: Combined result of gravity flow and bottom current".DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY 122.2015(2015):172-184.