DOI: 10.1016/j.earscirev.2020.103453
论文题名: Neoproterozoic postglacial paleoenvironment and hydrocarbon potential: A review and new insights from the Doushantuo Formation Sichuan Basin, China
作者: Xiao D. ; Cao J. ; Luo B. ; Tan X. ; Xiao W. ; He Y. ; Li K.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2021
卷: 212 语种: 英语
中文关键词: Extensional rift
; Glacially eroded depression
; Hydrocarbon source rocks
; Neoproterozoic Doushantuo and Dengying formations
; Organic matter accumulation
; South China
英文关键词: extensional tectonics
; hydrocarbon exploration
; hydrocarbon generation
; hydrocarbon reservoir
; paleoenvironment
; Postglacial
; Proterozoic
; rift zone
; source rock
; China
; Sichuan Basin
英文摘要: The Neoproterozoic provides an important record of glacial–postglacial paleoenvironments, organic carbon cycling, and hydrocarbon accumulation. Here, to better understand the environmental, sedimentary, and petroleum geological potential of the Neoproterozoic, we summarize and review research on paleoenvironment and hydrocarbon prospectivity during the era for regions worldwide and also present a case study of the Marinoan postglacial Ediacaran Doushantuo Formation in the Sichuan Basin, upper Yangtze region, China. Sediments that were deposited during the Neoproterozoic postglaciations generally have hydrocarbon-generating potential. In some places, the sediments have reached stages of burial and thermal evolution appropriate for hydrocarbon generation, with some sites having been exploited for commercial production. In the Sichuan Basin, the distribution and thickness of Doushantuo Formation sediments were controlled by glacially eroded topography and/or extension-related subsidence. Abundant organic matter was produced through paleo-productivity (Ba/Al and Cu/Al proxies can reach up to 181.08 and 8.94, respectively) and anoxia (U-EF and Mo-EF proxies can reach up to 5.45 and 14.00, respectively) governed by marine transgression. In South China, many depocenters of the Doushantuo Formation sediments have a strip-shaped geometry in the plane and are expected to be prospective for oil and gas. The reported findings can be used as a reference for further studies of glacial and postglacial deposits with organic matter accumulation of the Neoproterozoic and other periods. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166541
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, PetroChina Key Laboratory of Carbonate Reservoirs, Southwest Petroleum University, Chengdu, Sichuan 610500, China; State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China; Research Institute of Petroleum Exploration and Development, PetroChina Southwest Oil and Gas Field Company, Chengdu, Sichuan 610051, China
Recommended Citation:
Xiao D.,Cao J.,Luo B.,et al. Neoproterozoic postglacial paleoenvironment and hydrocarbon potential: A review and new insights from the Doushantuo Formation Sichuan Basin, China[J]. Earth Science Reviews,2021-01-01,212