Shallow gas and gas hydrate accumulations influenced by magmatic complexes in the Pearl River Mouth Basin, South China Sea

doi:10.1016/j.margeo.2022.106928

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

	Shallow gas and gas hydrate accumulations influenced by magmatic complexes in the Pearl River Mouth Basin, South China Sea
	Jin, Jiapeng 1,2,3,4; Wang, Xiujuan 1,2,3,4; Zhang, Zhengyi 3,4,5,6; He, Min 7; Magee, Craig 8; Li, Jie 7; Li, Yuanping 7; Li, Sanzhong 1,2,3,4; Luan, Zhendong 3,4,5,6; Zhang, Guangxu 3,4,5,6
刊名	MARINE GEOLOGY
	2022-11-01
卷号	453 页码:17
关键词	Gas hydrate Free gas Magmatism Fluid migration Pearl River Mouth Basin
ISSN号	0025-3227
DOI	10.1016/j.margeo.2022.106928
通讯作者	Wang, Xiujuan(wangxiujuan@ouc.edu.cn)
英文摘要	We analyse occurrences of gas hydrates and free gases above a 1200 km2 complex of igneous volcanoes and sills using newly acquired three-dimensional (3D) seismic data in the Pearl River Mouth Basin of the South China Sea. In strata above volcano summits, we recognize three enhanced reflection layers at different stratigraphic levels, including discontinuous Bottom Simulating Reflectors (BSRs) and pluming BSRs. We also show that the lateral tips of eight sills, which at times appear to terminate against supra-sill faults, underlie gas chimneys linked to gas hydrate and free gas in shallower strata. These supra-sill faults and gas chimneys, as well as supra-volcano faults, provided pathways for upward fluid (gas) migration from deep sources. Given the spatial relationship between volcanoes, sills, free gas, and gas hydrates, we suggest that the igneous structures focused fluid migration into overlying faults and gas chimneys. We also explore whether higher geothermal gradient at the summits of the volcanoes caused the base of gas hydrate stability zone to be shallower, forming a pluming BSR. Our study highlights how volcanic systems can influence the formation and distribution of later gas hydrate and free gas.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42020100] ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2021QNLM020002] ; National Natural Science Foundation of China Innovation Group Project[42121005] ; Laboratory for Marine Science and Technology (Qingdao) Initial Foundation[JCZX202019] ; National Key R&D Program of China[2017YFC0307301-1] ; Pilot National, and Research start-up funds of Zhufeng Scholars Program
WOS研究方向	Geology ; Oceanography
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000888294700002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/180225]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Wang, Xiujuan
作者单位	1.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Key Lab Submarine Geosci & Prospecting Tech, MOE, Qingdao 266100, Peoples R China 2.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol Qingdao, Deep Sea Multidisciplinary Res Ctr, Qingdao 266237, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Megasci, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China 7.China Natl Offshore Oil Corp Ltd, Shenzhen Branch, Shenzhen 518054, Peoples R China 8.Univ Leeds, Inst Geophys & Tecton, Sch Earth & Environm, Leeds LS2 9JT, England
推荐引用方式 GB/T 7714	Jin, Jiapeng,Wang, Xiujuan,Zhang, Zhengyi,et al. Shallow gas and gas hydrate accumulations influenced by magmatic complexes in the Pearl River Mouth Basin, South China Sea[J]. MARINE GEOLOGY,2022,453:17.
APA	Jin, Jiapeng.,Wang, Xiujuan.,Zhang, Zhengyi.,He, Min.,Magee, Craig.,...&Sun, Luyi.(2022).Shallow gas and gas hydrate accumulations influenced by magmatic complexes in the Pearl River Mouth Basin, South China Sea.MARINE GEOLOGY,453,17.
MLA	Jin, Jiapeng,et al."Shallow gas and gas hydrate accumulations influenced by magmatic complexes in the Pearl River Mouth Basin, South China Sea".MARINE GEOLOGY 453(2022):17.