Fine-grained and coarse-grained Paleogene sublacustrine fan systems in Fushan Depression, Beibuwan Basin, South China Sea: implications for sedimentary characteristics and depositional processes

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	Fine-grained and coarse-grained Paleogene sublacustrine fan systems in Fushan Depression, Beibuwan Basin, South China Sea: implications for sedimentary characteristics and depositional processes
	Pan SQ; Wang H; Yang Z; Liu ET; Jin SD; Huang CY; Gao DP
刊名	ARABIAN JOURNAL OF GEOSCIENCES
	2016
通讯作者邮箱	pansongqi@pku.edu.cn ; yangzhi2009@petrochina.com.cn
卷号	9 期号:14 页码:642
关键词	Sublacustrine fan systems Paleogene Liushagang Formation Sedimentary characteristics Paleogeomorphology
ISSN号	1866-7511
通讯作者	Pan, SQ (reprint author), Peking Univ, Sch Earth & Space Sci, Yiheyuan Rd 5, Beijing 100871, Peoples R China. ; Pan, SQ ; Yang, Z (reprint author), PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China.
产权排序	[Pan, Songqi] Peking Univ, Sch Earth & Space Sci, Yiheyuan Rd 5, Beijing 100871, Peoples R China; [Pan, Songqi; Yang, Zhi] PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China; [Wang, Hua; Liu, Entao; Huang, Chuanyan] China Univ Geosci, Faulty Earth Resources, Wuhan 430074, Peoples R China; [Jin, Siding] Chengdu Univ Technol, Coll Energy Resources, Chengdu 610059, Peoples R China; [Gao, Dapeng] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
中文摘要	The Fushan Depression is a hydrocarbon-bearing half-graben rift sub-basin located in the southeast of the Beibuwan Basin, South China Sea. The sublacustrine fan systems in the Paleogene Liushagang Formation have recently become important targets in this depression, while the depositional process and detailed characterization of these systems are little known. Analysis of drilled cores, wire-line logs, and 3-D seismic survey suggest that the Fushan Depression develops two different types of sublacustrine fan systems. The fine-grained sublacustrine fan system located in the western area is mainly composed of fine-to medium-grained light gray sandstones interbedded with layers of silt-rich shales. This kind of sediment slumped from the distal bar of the delta front due to high sediment pore pressures at the slope edge as well as the activity of the Meitai Fault. By contrast, the coarse-grained sublacustrine fan system formed in the eastern area is characterized by medium to coarse gray sandstones and conglomerates with the development of various deformed lenticular beddings, deformed pillow structures, and micro-faults. Further study suggests that its sedimentation process is closely related to the geomorphology of flexure slope-break belt. The slope changed abruptly from 3 degrees similar to 5 degrees to 7 degrees similar to 9 degrees across the flexure slope point, increasing the accommodation space under the flexure belt. The coarse-grained sublacustrine fan formed when coarse-grained sediment spillover the slope-break toward the increased accommodation space. As the reservoir quality of these sublacustrine fan systems is well controlled by the sedimentary characteristics and sedimentation processes, our results should be of great significance for the development of future exploration.
分类号	Q3
类目[WOS]	Geosciences, Multidisciplinary
研究领域[WOS]	Geology
关键词[WOS]	Sublacustrine fan systems ; Paleogene Liushagang Formation ; Sedimentary characteristics ; Paleogeomorphology
收录类别	SCI
原文出处	http://dx.doi.org/10.1007/s12517-016-2674-5
语种	英语
WOS记录号	WOS:000384319500013
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/59715]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Pan SQ,Wang H,Yang Z,et al. Fine-grained and coarse-grained Paleogene sublacustrine fan systems in Fushan Depression, Beibuwan Basin, South China Sea: implications for sedimentary characteristics and depositional processes[J]. ARABIAN JOURNAL OF GEOSCIENCES,2016,9(14):642.
APA	Pan SQ.,Wang H.,Yang Z.,Liu ET.,Jin SD.,...&Gao DP.(2016).Fine-grained and coarse-grained Paleogene sublacustrine fan systems in Fushan Depression, Beibuwan Basin, South China Sea: implications for sedimentary characteristics and depositional processes.ARABIAN JOURNAL OF GEOSCIENCES,9(14),642.
MLA	Pan SQ,et al."Fine-grained and coarse-grained Paleogene sublacustrine fan systems in Fushan Depression, Beibuwan Basin, South China Sea: implications for sedimentary characteristics and depositional processes".ARABIAN JOURNAL OF GEOSCIENCES 9.14(2016):642.