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引用本文:谭富荣,杨创,尘福艳,杜芳鹏,刘志武,许将,李居云,陈应涛,罗婷婷,雒铮,范玉海. 羌塘盆地巴青地区上三叠统巴贡组沉积相及其对油气等资源的控制[J]. 中国地质, 2020, 47(1): 57-71.
TAN Furong,YANG Chuang,CHEN Fuyan,DU Fangpeng,LIU Zhiwu,XU Jiang,LI Juyun,CHEN Yingtao,LUO Tingting,LUO Zheng,FAN Yuhai. Sedimentary facies and its control over petroleum and other resources of the Upper Triassic Bagong Formation in Baqing area, southeastern Qiangtang Basin[J]. Geology in China, 2020, 47(1): 57-71(in Chinese with English abstract).
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羌塘盆地巴青地区上三叠统巴贡组沉积相及其对油气等资源的控制
谭富荣1, 杨创1, 尘福艳1, 杜芳鹏2, 刘志武3, 许将1, 李居云1, 陈应涛2, 罗婷婷4, 雒铮1, 范玉海1
1.中国煤炭地质总局 煤航地质勘查院, 陕西 西安 710199;2.西安科技大学 地质与环境学院, 陕西 西安 710054;3.长安大学 地球科学与资源学院, 陕西 西安 710054;4.陕西延长石油(集团)有限责任公司研究院, 陕西 西安 710075
摘要:
羌塘盆地是青藏高原上最大的中生代海相沉积盆地,富含烃源岩和蒸发岩,也是中国油气勘探重要的场所之一。巴青地区的上三叠统巴贡组沉积相研究不仅能为特提斯洋的演化提供佐证,而且为羌塘盆地油气和钾盐资源勘探提供理论依据和实践指导。本文对巴青地区上三叠统巴贡组的古生物、沉积构造、岩石组合分析,结果表明:研究区主要发育障壁岛沉积体系下的潟湖相、潮坪相、三角洲相沉积相以及10种亚相。晚三叠世巴贡期,研究区是一个由北(巴青—索县)向南(班—怒缝合带)变深的伸展背景下的陆缘海沉积环境。
关键词:  油气资源  上三叠统  巴贡组  沉积相  沉积演化  油气地质调查工程  羌塘盆地  西藏
DOI:10.12029/gc20200105
分类号:P618.13;TE122
基金项目:国家自然科学基金(41702144)、青海省地质调查局科研项目(2017042007ky007)、陕西省自然科学基础研究计划项目(2019JQ-991,2019JM-126)和陕西省重点研发计划(2018ZDXM-GY-030)联合资助。
Sedimentary facies and its control over petroleum and other resources of the Upper Triassic Bagong Formation in Baqing area, southeastern Qiangtang Basin
TAN Furong1, YANG Chuang1, CHEN Fuyan1, DU Fangpeng2, LIU Zhiwu3, XU Jiang1, LI Juyun1, CHEN Yingtao2, LUO Tingting4, LUO Zheng1, FAN Yuhai1
1.Geological Prospecting Research Institute of ARSC, China National Administration of Coal Geology, Xi'an 710054, Shaanxi, China;2.College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China;3.College of Earth Science and Resources, Chang'an University, Xi'an 710054 Shaanxi, China;4.Research Institute of Shaanxi Yanchang Petroleum(Group) Co., Ltd., Xi'an 710075, Shaanxi, China
Abstract:
The Qiangtang Basin is the largest Mesozoic marine sedimentary basin on the Tibetan Plateau. It is rich in source rocks and evaporites, and has become one of the most important places for petroleum exploration in China. The study of sedimentary facies of the Upper Triassic Bagong Formation in Tumen-Baqing area can not only provide evidence for the evolution of the Tethyan Ocean but also provide theoretical basis and practical guidance for the exploration of hydrocarbon and potassium resources in the Qiangtang Basin. An analysis of petrological characteristics, paleontology and sedimentary structures shows that the lagoon facies, tidal flat facies, delta facies and ten kinds of sub-facies are mainly developed in the study area. During the Bagong period of the Late Triassic, the study area was in a continental margin sea sedimentary environment under the extensional background from the north (Baqing-Suoxian) to the south (Ban-Nu suture zone).
Key words:  oil and gas resources  Upper Triassic  Bagong Formation  Sedimentary facies  sedimentary evolution  oil and gas geological survey engineering  Qiangtang basin  Tibet