Sedimentary Characteristics and Evolution Model of the JurassicBadaowan Formation in the Dishuiquan Area in Eastern Junggar Basin

WANG Zhe，JIN Zhen-kui，LIU Xue-gong，FU Jing，GAO Bai-shui，YAO Meng-zhu

doi:10.11764/j.issn.1672-1926.2013.02.282

2013 , Vol. 24 >Issue 2: 282 - 291

DOI: https://doi.org/10.11764/j.issn.1672-1926.2013.02.282

Sedimentary Characteristics and Evolution Model of the JurassicBadaowan Formation in the Dishuiquan Area in Eastern Junggar Basin

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1.College of Geosciences in China University of Petroleum,Beijing 102249,China； 2.State Key Laboratory of Petroleum Resource and Prospecting in China University of Petroleum,Beijing 102249,China;3.Baikouquan Production Plant of Xinjiang Oilfield Company,PetroChina,Karamay 834000,China

Received date: 2012-11-27

Revised date: 2012-12-14

Online published: 2013-04-10

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Abstract

Based on the analyses of regional geology,core,logging and seismic data,the sedimentary characteristics,distribution features of sedimentary facies and the sedimentary evolution model of Dishuiquan area are examined.The results show that the study area mainly develops three sedimentary facies including braided river,braided river delta and lacustrine,five types of sedimentary subfacies including braided channel,floodplain,braided river delta plain,braided river delta front and shore-shallow lacustrine,and nine types of sedimentary microfacies including channel,channel bar,wetland,distributary channel,underwater distributary channel,tributary bay,mouth bar,distal bar and shore-shallow lacustrine mud.Based on sedimentary characteristics and deposits distribution,an evolutionary model with braided river-lake-braided river delta facies integrated is proposed.In the depositional period of J₁b₁,the source came from Kelameili Mountain in the northeast,and it developed large area of gravel braided rivers to the south and west.In the depositional period of J₁b₂,the lacustrine transgressive onlapped from southwest to northeast,the lakes could reach the ancient denudation area,and it developed large area of lacustrine sediments.In the depositional period ofJ₁b₃,tectonic activity were intensive and source supply was abundant.Large amounts of clastic sediments came into the Dishuiquan area from Kelameili Mountain and it developed braided river delta.Jurassic strata in Junggar basin are characterized by “groove alternating with roof;shallow water in wide basin;wide-spreading river and restricted fan;multi-source and gentle slope”. 

Key words： Junggar basin; Dishuiquan area; Badaowan Formation; Sedimentary characteristics; Evolutionary model

Cite this article

WANG Zhe，JIN Zhen-kui，LIU Xue-gong，FU Jing，GAO Bai-shui，YAO Meng-zhu . Sedimentary Characteristics and Evolution Model of the JurassicBadaowan Formation in the Dishuiquan Area in Eastern Junggar Basin[J]. Natural Gas Geoscience, 2013 , 24(2) : 282 -291 . DOI: 10.11764/j.issn.1672-1926.2013.02.282

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