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Geochemistry of Oligocene Huagang Formation clastic rocks, Xihu Sag, the East China Sea Shelf Basin: Provenance, source weathering, and tectonic setting

文献类型：期刊论文

作者Hao, Lewei1; Wang, Qi1; Tao, Huifei1; Li, Xiaoyan2; Ma, Dongxu1,3; Ji, Hongjie1,3
刊名GEOLOGICAL JOURNAL
出版日期2018
卷号53期号:1页码:397-411
关键词Huagang Formation Provenance Analysis Sedimentary Geochemistry Tectonic Setting Xihu Sag
ISSN号0072-1050
DOI10.1002/gj.2906
文献子类Article
英文摘要The East China Sea Shelf Basin (ECSSB) is an important tectonic unit of the western Pacific active continental margin. It is divided further into a series of sags and basement ridges. The Xihu Sag on the east margin of the ECSSB is an important hydrocarbon exploration area and contains significant petroleum resources. The Huagang Formation is the major reservoir in Xihu Sag, and its provenance has been the focus of debate at all times. The major and trace elements (including rare earth elements) compositions were analyzed for the Oligocene Huagang Formation sandstone and mudstone samples in the Xihu Sag. The provenance and tectonic setting of these clastic rocks are discussed. The Chemical Index of Alteration value and A-CN-K diagrams suggest low to moderate weathering in the source areas of the Huagang Formation. The mudstones have lower index of compositional variation values (<1), indicating that the mudstone samples are compositionally mature, whereas the index of compositional variation values for the sandstone samples (0.59 to 1.87) indicate that the sandstones are compositionally immature and mature. The major and trace element composition and ratios of the clastic rock samples indicate that mudstones are mainly from Late Mesozoic igneous rocks in SE China, which is dominated by the acidic volcanic rock. The provenance of sandstones is from two different directions, the Central Uplift Group of ECSSB and the Taiwan-Sinzi Fold Belt with more mafic volcanic rock. Based on the geochemical analysis of the clastic rock samples, the tectonic setting of Xihu Sag was Japanese-type continental margin during the Huagang Formation deposition time (Oligocene).
WOS关键词RARE-EARTH-ELEMENT ; SEDIMENTARY-ROCKS ; CRUSTAL EVOLUTION ; MAJOR-ELEMENT ; VOLCANIC-ROCKS ; WET MOUNTAINS ; SOUTH CHINA ; SANDSTONES ; SHALES ; PETROGENESIS
WOS研究方向Geology
语种英语
WOS记录号WOS:000419785900022
出版者WILEY
资助机构National Natural Science Foundation of China(41502110 ; National Natural Science Foundation of China(41502110 ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; 41502142) ; 41502142) ; National Natural Science Foundation of China(41502110 ; National Natural Science Foundation of China(41502110 ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; 41502142) ; 41502142) ; National Natural Science Foundation of China(41502110 ; National Natural Science Foundation of China(41502110 ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; 41502142) ; 41502142) ; National Natural Science Foundation of China(41502110 ; National Natural Science Foundation of China(41502110 ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; 41502142) ; 41502142)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82576]  
专题中国科学院地质与地球物理研究所
通讯作者Hao, Lewei
作者单位1.Chinese Acad Sci, Key Lab Petr Resources, Gansu Prov Key Lab Petr Resources Res, Inst Geol & Geophys, Lanzhou, Gansu, Peoples R China
2.Chinese Acad Sci, Lanzhou Lib, Lanzhou, Gansu, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Hao, Lewei,Wang, Qi,Tao, Huifei,et al. Geochemistry of Oligocene Huagang Formation clastic rocks, Xihu Sag, the East China Sea Shelf Basin: Provenance, source weathering, and tectonic setting[J]. GEOLOGICAL JOURNAL,2018,53(1):397-411.
APA Hao, Lewei,Wang, Qi,Tao, Huifei,Li, Xiaoyan,Ma, Dongxu,&Ji, Hongjie.(2018).Geochemistry of Oligocene Huagang Formation clastic rocks, Xihu Sag, the East China Sea Shelf Basin: Provenance, source weathering, and tectonic setting.GEOLOGICAL JOURNAL,53(1),397-411.
MLA Hao, Lewei,et al."Geochemistry of Oligocene Huagang Formation clastic rocks, Xihu Sag, the East China Sea Shelf Basin: Provenance, source weathering, and tectonic setting".GEOLOGICAL JOURNAL 53.1(2018):397-411.

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来源：地质与地球物理研究所

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