Late Ediacaran to Early Cambrian stratigraphic correlation and its geological implications in the northwestern Sichuan Basin: insights from phosphorus, isotopes, and small shelly fossils

doi:10.3389/feart.2024.1440117

NIGPAS OpenIR

	Late Ediacaran to Early Cambrian stratigraphic correlation and its geological implications in the northwestern Sichuan Basin: insights from phosphorus, isotopes, and small shelly fossils
通讯作者	Zhu, Xinjian([email protected]) ; Liu, Shugen([email protected])
	Li, Wenzheng 1,2; Zhang, Jianyong 2; Zhu, Xinjian 2; Wang, Yongxiao 2; Tian, Xingwang 3; Fu, Xiaodong 2; Jiang, Hua 4; Zhong, Yuan 3; Liu, Shugen 1; Li, Rong 4
	2024-09-03
发表期刊	FRONTIERS IN EARTH SCIENCE
卷号	12 页码:18
摘要	The characteristics of elements, isotopes, and small shelly fossils were investigated for Late Ediacaran to Early Cambrian stratigraphy division and to discuss their geological implications in the northwestern Sichuan Basin. The results reveal that small shelly fossils can be detected in the high-phosphorous section, with the concentration of phosphorus mainly ranging from 2% to 8%, suggesting that this interval belongs to the Early Cambrian, which is also consistent with the carbon isotopic composition results. In addition, the Early Cambrian is denudated in the Sichuan Basin due to tectonic movement, and the characteristics of some isotopes and small shell fossils are different from those in other basins. It can be proposed that P content can support the recognition of lithological boundaries, and the high phosphorus content can be used as a reference to identify the top and bottom boundaries of the Maidiping Formation in the study area. According to the elemental compositions in the Ediacaran Dengying Formation, the variations in Si, Al, Fe, and K contents are similar in the platform area and rift area, suggesting that the third and fourth member of the Dengying Formation are also developed in the Deyang-Anyue Rift. The results suggest that both the Deng-4 member and Maidiping Formation feature contemporaneous deposition of different facies in the northwestern Sichuan Basin. The strata consist of shale intercalated with thin carbonate rock deposits in the Deyang-Anyue Rift, while carbonate rock deposits in the platform. The Deyang-Anyue Rift expanded gradually in the Late Ediacaran and eventually filled in the Early Cambrian. The data in this study illustrate that elemental compositions, isotopes, and small shelly fossils can be combined to correlate the Late Ediacaran to Early Cambrian strata and provide new evidence for Deyang-Anyue Rift evolution. The results offer some new insights for deep oil and gas exploration in the Sichuan Basin and for the tectonic-depositional-environmental-biological synergistic evolution in the Late Ediacaran to Early Cambrian transition.
关键词	phosphorus small shelly fossil stratigraphic division intracratonic rift evolution Ediacaran-Cambrian Sichuan Basin
DOI	10.3389/feart.2024.1440117
收录类别	SCI
语种	英语
关键词[WOS]	YANGTZE PLATFORM ; SOUTHWEST CHINA ; XIAOTAN SECTION ; CARBON ; EVOLUTION ; BOUNDARY ; YUNNAN ; ASSEMBLAGES ; CONSTRAINTS ; TRANSITION
资助项目	PetroChina10.13039/501100004226
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001313724600001
项目资助者	PetroChina10.13039/501100004226
出版者	FRONTIERS MEDIA SA
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/44298
专题	中国科学院南京地质古生物研究所
通讯作者	Zhu, Xinjian; Liu, Shugen
作者单位	1.Chengdu Univ Technol, Coll Energy, Chengdu, Peoples R China 2.PetroChina Hangzhou Res Inst Geol, Hangzhou, Peoples R China 3.PetroChina Southwest Oil & Gasfield Co, Chengdu, Peoples R China 4.PetroChina, Res Inst Petr Explorat & Dev, Beijing, Peoples R China 5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing, Peoples R China
推荐引用方式 GB/T 7714	Li, Wenzheng,Zhang, Jianyong,Zhu, Xinjian,et al. Late Ediacaran to Early Cambrian stratigraphic correlation and its geological implications in the northwestern Sichuan Basin: insights from phosphorus, isotopes, and small shelly fossils[J]. FRONTIERS IN EARTH SCIENCE,2024,12:18.
APA	Li, Wenzheng.,Zhang, Jianyong.,Zhu, Xinjian.,Wang, Yongxiao.,Tian, Xingwang.,...&Deng, Bin.(2024).Late Ediacaran to Early Cambrian stratigraphic correlation and its geological implications in the northwestern Sichuan Basin: insights from phosphorus, isotopes, and small shelly fossils.FRONTIERS IN EARTH SCIENCE,12,18.
MLA	Li, Wenzheng,et al."Late Ediacaran to Early Cambrian stratigraphic correlation and its geological implications in the northwestern Sichuan Basin: insights from phosphorus, isotopes, and small shelly fossils".FRONTIERS IN EARTH SCIENCE 12(2024):18.