Sedimentology of ephemeral carbonate accumulations in siliciclastic-dominated passive margin settings, Pearl River Mouth Basin, South China Sea

doi:10.1016/j.marpetgeo.2021.105122

CORC > 海洋研究所 > 中国科学院海洋研究所

	Sedimentology of ephemeral carbonate accumulations in siliciclastic-dominated passive margin settings, Pearl River Mouth Basin, South China Sea
	Ma, Benjun 4,5,6; Qin, Zhiliang 4,5,6; Betzler, Christian 7; Wu, Shiguo 1,3; Mi, Lijun 8; Gao, Wei 2; Gao, Jinwei 3; Liu, Xueqin 4,5,6
刊名	MARINE AND PETROLEUM GEOLOGY
	2021-08-01
卷号	130 页码:21
关键词	Carbonate accumulations Isolated carbonate buildups Mixed carbonate-siliciclastic deposits Seismic morphologies Petroliferous basin South China Sea
ISSN号	0264-8172
DOI	10.1016/j.marpetgeo.2021.105122
通讯作者	Ma, Benjun(mabenjun@hrbeu.edu.cn) ; Qin, Zhiliang(qinzhiliang@hrbeu.edu.cn)
英文摘要	High-resolution seismic and borehole data were used to investigate the sedimentological characteristics of carbonate accumulations in the Pearl River Mouth Basin (PRMB) of the South China Sea. Based on seismic morphologies and petrologic analysis, three scale types of oligo-mesophotic ICBs were identified to have developed ephemerally in the early Early Miocene. The first ICB type is represented by small ICBs with lateral extension in the kilometer range, characterized by mounded geometry, complex internal architectures and a high-frequency alternation of carbonates and volcaniclastics. The second ICB type has lateral extensions of tens of kilometers and convex-up reflections, featuring obvious vertical thickening compared to the surrounding siliciclastic deposits. The third ICB type consist of extensive platforms with hundreds of kilometers of lateral extension, onlapped by surrounding siliciclastic deposits. The correlation of seismic and well data allows us to reconstruct the evolutionary history of the three types of ICBs in the PRMB: All the ICBs built by large benthic foraminifera and/or coralline algae biota, occurred on or around submarine topographic highs such as volcanic edifices or inherited from basement rises, developed under stable subsidence rates between 120 m/Myr and 180 m/Myr, and extinguished suddenly in the late Early Miocene with an abrupt decrease in the subsidence rate or a change from subsidence to tectonic uplift. It is proposed that post-rift subsidence of the study area controlled the evolution of the ICBs. Except for ICBs, mixed carbonate-siliciclastic deposits are identified in well succession, characterized by two types of mixing, namely, compositional mixing (core-plug scale) and strata mixing (stratigraphic scale). These mixed systems generated high-frequency alternations of carbonate, siliciclastic and/or mixed deposits sequence stratigraphy. This work reveals in detail the typical features of seismic morphologies, lithofacies, internal architectures and evolutionary mechanism of ICBs and mixed systems in the PRMB, and thus has implications for predicting reservoirs in hydrocarbon exploration and understanding carbonate sedimentology in a siliciclastic-dominated passive marginal basin.
资助项目	National Natural Science Foundation of China[42006064] ; National Natural Science Foundation of China[41876053] ; National Natural Science Foundation of China[91228208] ; Acoustic Science and Technology Laboratory
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000661832700001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/176891]
专题	中国科学院海洋研究所
通讯作者	Ma, Benjun; Qin, Zhiliang
作者单位	1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Lab Marine Geophys & Georesource, Sanya 572000, Peoples R China 4.Harbin Engn Univ, Acoust Sci & Technol Lab, Harbin 150001, Peoples R China 5.Harbin Engn Univ, Minist Ind & Informat Technol, Key Lab Marine Informat Acquisit & Secur, Harbin 150001, Peoples R China 6.Harbin Engn Univ, Coll Underwater Acoust Engn, Harbin 150001, Peoples R China 7.Univ Hamburg, Inst Geol, D-20146 Hamburg, Germany 8.China Natl Offshore Oil Corp Ltd, Shenzhen Branch Co, Guangzhou 510420, Peoples R China
推荐引用方式 GB/T 7714	Ma, Benjun,Qin, Zhiliang,Betzler, Christian,et al. Sedimentology of ephemeral carbonate accumulations in siliciclastic-dominated passive margin settings, Pearl River Mouth Basin, South China Sea[J]. MARINE AND PETROLEUM GEOLOGY,2021,130:21.
APA	Ma, Benjun.,Qin, Zhiliang.,Betzler, Christian.,Wu, Shiguo.,Mi, Lijun.,...&Liu, Xueqin.(2021).Sedimentology of ephemeral carbonate accumulations in siliciclastic-dominated passive margin settings, Pearl River Mouth Basin, South China Sea.MARINE AND PETROLEUM GEOLOGY,130,21.
MLA	Ma, Benjun,et al."Sedimentology of ephemeral carbonate accumulations in siliciclastic-dominated passive margin settings, Pearl River Mouth Basin, South China Sea".MARINE AND PETROLEUM GEOLOGY 130(2021):21.