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Lithofacies of Volcanic Rock at the Top of Upper Carboniferous Stratigraphy in Luxi  Area of Junggar Basin

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  • 1.Department of Resource and Environment,Southwest Petroleum University,Chengdu 610500,China;
    2.Research Institute of Exploration and Development,Xinjiang Oilfieid,Karamay 834000,China

Received date: 2009-03-04

  Revised date: 2009-06-21

  Online published: 2010-02-10

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Abstract

By geologic information and seismic data, we carry out the sequence division and correlation for the upper Carboniferous stratigraphy in the Luxi area of Junggar basin, and discuss the lithology and lithofacies volcanic rock at the top of the upper Carboniferous stratigraphy. The result suggests that the upper Carboniferous stratigraphy in the Luxi area could be divided into two sequences, such as upper sequence and lower sequence. The top and base boundaries of the upper sequence are regional unconformity, which is shown as the onlap/erosion reflection terminal type in the seismic profile. The rock types in the upper sequence are basalt, andesite, sedimentary tuff, tuff, volcanic breccia, dacite, etc. The volcanic facies included volcanic conduit, explosive, overflow, volcanogenic sedimentation. The volcanic conduit facies can be distinguished by cone reflection in the seismic profile. The lithological rocks in the explosive rock facies are volcanic breccia and tuff, with high electrical resistivity and high velocity, various gamma values but low gamma value, accompanied with variable amplitudes, interrupted continuous reflection or scrambled reflection signature. The lithological rocks in the overflow facies are basalt, andesite and dacite, with high electrical resistivity and high velocity, various gamma value, accompanied with moderate-strong amplitudes, continuouse reflection signature. The lithological rocks in volcanogenic sedimentation facies are composed of normal volcaniclastic rock, sedimentary rock and volcaniclastic sedimentary rock, with electrical property of high gamma, low electrical resistivity and low velocity, as well as high amplitude, high continuouse reflection signature. The explosive rock facies is greatly distributed in the Dabasong uplift and the western and eastern parts of the Xiayan uplift. The volcanogenic sedimentation facies is mainly distributed in the central Xiayan uplift, southern Mahu sag. The other regions show the overflow facies.

Cite this article

MU Zhong-Hai, LIU Ji-Shan, XU Jie . Lithofacies of Volcanic Rock at the Top of Upper Carboniferous Stratigraphy in Luxi  Area of Junggar Basin[J]. Natural Gas Geoscience, 2010 , 21(1) : 47 -53 . DOI: 10.11764/j.issn.1672-1926.2010.01.47

References

[1]Luo Jinglan,Shao Hongmei,Zhang Chengli.Summary of research methods and exploration technologies for volcanic reservoirs[J].Acta Petrolei Sinica,2003,24(1):31-37.[罗静兰,邵红梅,张成立.火山岩油气藏研究方法与勘探技术综述[J].石油学报,2003,24(1):31-37.]
[2]Yang Liying,Li Ruilei.Integrated recognition with geologic and seismic methods on the volcanic rocks,volcanic edifices and volcanic facies in southern deep Songliao basin[J].Journal of Jilin University ,2007,37(6):1083-1090.[杨立英,李瑞磊.松辽盆地南部深层火山岩、火山机构和火山岩相地质—地震综合识别[J].吉林大学学报,2007,37(6):1083-1090.]
[3]Jin Huijuan,Li Yuci,Li Juying.The flysch facies of middle carboniferous in the northern Tianshan,Xinjinag[J].Acta Sedimentologica Sinica,1989,7(1):49-56.[晋慧娟,李育慈,李菊英.新疆北天山中石炭统的复理石相[J].沉积学报,1989,7(1):49-56.]
[4]Guan Shourui.Magmatic Rock and Metamorphic Rock Conciseness Course of Study[M].Beijing:Geological Publishing House,1989:1-68.[管守锐.岩浆岩及变质岩简明教程[M].北京:地质出版社,1989:1-68.]
[5]Qiu Jiaxiang,Tao Kuiyuan,Zhao Junlei,et al.Volcanic Rock[M].Beijing:Geological Publishing House,1996:10-55.[邱家骧,陶奎元,赵俊磊,等.火山岩[M].北京:地质出版社,1996:10-55.]
[6]Mu Zhonghai,Jiang Yuqiang.Seismic Stratigraphy Interpretation Method and Apply[M].Chengdu: Electron Scientific Technical University Press,1996:60-90.[牟中海,蒋裕强.地震地层学解释方法及应用[M].成都:电子科技大学出版社,1996:60-90.]
[7]Wu Jinghua,Huang Yun,Zhang Jiwu,et al.Seismic identification method apply of volcanic phase in Junggar basin east[J].Natural Gas Industry,2007,27(5):481-483.[伍菁华,黄芸,张继武,等.火山岩相地震识别方法在准噶尔盆地东部的应用[J].天然气工业,2007,27(5):481-483.]
[8][Yan Yaomin,Wang Yingmin,Zhu Yanhe,et al.Model of sedimentary facies in Jiamuhe Formation,northwestern margin of Junggar basin[J].Natural Gas Geoscience,2007,18(3):386-388.[颜耀敏,王英民,祝彦贺,等.准噶尔盆地西北缘五八区佳木河组含火山岩系沉积模式[J].天然气地球科学,2007,18(3):386-388.]
[9]Wang Ling,Sun Xiping,Zhang Yan,et al.Volcanic massif genetic mechanism and volcanic facies controlled by deep zone faulted systems in Songliao basin:A case in Xushen area[J].Natural Gas Geoscience,2007,18(3):389-393.[王玲,孙夕平,张研,等.松辽盆地深层断裂体系对火山岩成因和火山岩相带的控制——以徐深地区为例[J].天然气地球科学,2007,18(3):389-393.]
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