Sedimentary characteristics and evolution of the Middle Jurassic Toutunhe Formation in Shinan area of Junggar Basin
Zou Niuniu1, 2, 3, Zhang Daquan4, Shi Ji'an2, Jiang Huan5, Lu Xinchuan2, Zhang Shuncun2
1 College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou; 2 Key Laboratory of Petroleum Resources,Gansu Province/Key Laboratory of Petroleum Research,Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000,Gansu; 3 University of Chinese Academy of Sciences,Beijing 100049; 4 Geological Environmental Monitoring Institute in Guizhou Province,Guiyang 550004,Guizhou; 5 Xinjiang Oilfield Company Research Institute of Experiment and Detection,Karamay 834000,Xinjiang
Abstract There are different viewpoints about the sedimentary facies of the Middle Jurassic Toutunhe Formation in Shinan area of Junggar Basin by far. Based on detailed core observations,thin sections and logging analysis,through study on sedimentary characteristics of lithologic types,sedimentary structures and sedimentary sequence was carried out. Combining with regional sedimentary background and tectonic setting,we considered that the sedimentary environment of the Toutunhe Formation in Shinan area is braided delta. Braided delta front sediments were deposited during the depositional period of Member 1 of Toutunhe Formation,the ribboned sandbody of subaqueous distributary channel widely developed. During the depositional period of Member 2 of Toutunhe Formation,braided delta system progradated,braided delta plain appeared at areas close to provenance and sandbodies of braided delta plain were overlapping and widely distributed. During the depositional period of Member 3 of Toutunhe Formation, the lake level rised rapidly,and shallow lake facies were mainly developed in the study area.
Fund:[Co-funded by National Program on Key Basic Research Project(973 Program)(No.2011CB201104), National Science and Technology Major Project (No.2011ZX05000-01-06) and Key Laboratory Program of Gansu Province(No.1309RTSA041)]
Corresponding Authors:
Shi Ji??an, born in 1958,is a professor of the Lanzhou Center for Oil and Gas Resources,Institute of Geology and Geophysics,CAS. He is mainly engaged in sedimentology and petroleum geology. E-mail: jashi@lzb.ac.cn.
About author: Zou Niuniu,born in 1989,doctor,is a lecturer of College of Resources and Environmental Engineering, Guizhou University. She is engaged in sedimentology and petroleum geology. E-mail: niuniu9728@126.com.
Cite this article:
Zou Niuniu,Zhang Daquan,Shi Ji'an et al. Sedimentary characteristics and evolution of the Middle Jurassic Toutunhe Formation in Shinan area of Junggar Basin[J]. JOPC, 2016, 18(6): 951-960.
Zou Niuniu,Zhang Daquan,Shi Ji'an et al. Sedimentary characteristics and evolution of the Middle Jurassic Toutunhe Formation in Shinan area of Junggar Basin[J]. JOPC, 2016, 18(6): 951-960.
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