准噶尔盆地中拐地区下侏罗统层序地层特征与聚煤控制因素分析
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摘要
在分析前人对准噶尔盆地层序地层学研究成果的基础上,综合应用岩心、测井和地震资料,对准噶尔盆地西北缘中拐地区下侏罗统进行层序地层划分,总结了层序和体系域界面的识别标志,将下侏罗统划分为4个三级层序和7个体系域,同时叙述了各三级层序的结构特征。通过对层序内含煤岩系的发育特点分析,发现其主力煤层主要发育在JSQ1和JSQ3湖侵体系域中,本文作者认为研究区内湖侵时期为有利的聚煤时期,聚煤作用主要受构造沉降、物源供给、气候和沉积环境等因素的控制。
Based on the previous study results of sequence stratigraphy in Junggar basin,according to the drilling,logging and seismic data,classify sequence of the lower Jurassic in the Zhongguai zone of northwestern margin of Junggar basin,it sum up the identification of the boundaries of sequence and system tract,and the lower Jurassic has been divided into four sequences and seven system tracts,at the same time the characteristics of the four sequences’ composition have been described.Through analysis on the characteristics of coal-bearing strata,it finds that the main coal layers develop in the transgressive systems tracts of JSQ1 and JSQ3,the author of this paper argues that the transgression is the favorable period of coal accumulation in the studyarea,and the coal accumulation is mainly controlled by tectonic movement.the supply of source、climate and sedimentary environment.
Based on the previous study results of sequence stratigraphy in Junggar basin,according to the drilling,logging and seismic data,classify sequence of the lower Jurassic in the Zhongguai zone of northwestern margin of Junggar basin,it sum up the identification of the boundaries of sequence and system tract,and the lower Jurassic has been divided into four sequences and seven system tracts,at the same time the characteristics of the four sequences’ composition have been described.Through analysis on the characteristics of coal-bearing strata,it finds that the main coal layers develop in the transgressive systems tracts of JSQ1 and JSQ3,the author of this paper argues that the transgression is the favorable period of coal accumulation in the studyarea,and the coal accumulation is mainly controlled by tectonic movement.the supply of source、climate and sedimentary environment.
引文
[1]李增学.含煤盆地层序地层学[M].北京:地质出版社,2000,1～166.
[2]陈轩,张尚锋,张昌民,等.准噶尔盆地车排子地区新近系沙湾组层序地层[J].新疆石油地质,2008,29(1):65～67.
[3]Octavian Catuneanu.Sequence stratigraphy of clastic systems:concepts,merits,and pitfalls[J].Journal of African Earth Sciences,2002,(35):1～43.
[4]Van Wagomer J C.Silicilastic sequence stratigraphy in well logs,cores and outcrops:concepts tor high-resolution correlation of timeand facies[J].AAPG Mehods in Exploration Series(7),1990.
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[6]Diessel C F K.Coal bearing depositional systems-coal facies anddepositional environments[M].NewYork:Springer-Verlag,1992.
[7]刘豪,王英民,等.浅析准噶尔盆地侏罗系煤层在层序地层中的意义[J].沉积学报,2002,20(2):197～202.
[8]Shanley K W,McCabe P J.Alluvial architecture in a sequencesratigraphic framework a case history from the Upper Creta-ceousof southern Utah,U.S.A.In:Flint S S,Bryant I D eds.Thegeological modelling of hydrocarbon reservoirs and outcropanalogues.International Association of Sedimentologists,Spe-cialPublication,1993;(15):21～56.
[9]何志平,邵龙义,等.准噶尔盆地侏罗系八道湾组聚煤作用控制因素分析[J].沉积学报,2004,22(3):450～454.
[10]Nemec W.Coal correlations and intrabasinal subsidence:a newana lytical perspective.In:Kleinspehn K L and Paola C,eds.Newperspectives in basin analysis.New York:Springer-Verlag,1988.161～188.
[11]吴因业.煤层——一种陆相盆地中的成因层序边界[J].石油学报,1996,17(4):28～34.
[12]潘建国.准噶尔盆地红车断裂带古生界火山岩油气藏特征及成藏规律[J].岩性油气藏,2007,19(2):53～56.
[13]卢辉楠.准噶尔盆地的侏罗系[J].地层学杂志.1995,19(3):180～190.
[14]陈代钊,张鹏飞.三角洲平原上网结河的发育与聚煤作用[J].沉积学报,1996,14(3):103～112.
[15]邵龙义,张鹏飞,陈代钊,等.滇东黔西晚二叠世早期辫状河三角洲沉积体系及其聚煤特征[J].沉积学报,1994,12(4):132～139.
[16]杨晓平,李仰春,等.黑龙江东部下白垩统鸡西群层序地层划分与聚煤作用分析[J].华南地质与矿产,2005,(4):40～44.
[17]朱筱敏,康安,等.准噶尔盆地东北缘侏罗系含煤岩系层序地层和隐蔽圈闭[J].石油与天然气地质.2002,23(2):121～126.
[2]陈轩,张尚锋,张昌民,等.准噶尔盆地车排子地区新近系沙湾组层序地层[J].新疆石油地质,2008,29(1):65～67.
[3]Octavian Catuneanu.Sequence stratigraphy of clastic systems:concepts,merits,and pitfalls[J].Journal of African Earth Sciences,2002,(35):1～43.
[4]Van Wagomer J C.Silicilastic sequence stratigraphy in well logs,cores and outcrops:concepts tor high-resolution correlation of timeand facies[J].AAPG Mehods in Exploration Series(7),1990.
[5]Vail P R.Seismic stratigraphy interpretation using sequencestratigraphy,part1,Seismic stratigraphy interpretation procedure,in A.W.Bally,ed.Atlas of seismic stratigraphy:AAPG Studies inGeology,1987,27:1～10.
[6]Diessel C F K.Coal bearing depositional systems-coal facies anddepositional environments[M].NewYork:Springer-Verlag,1992.
[7]刘豪,王英民,等.浅析准噶尔盆地侏罗系煤层在层序地层中的意义[J].沉积学报,2002,20(2):197～202.
[8]Shanley K W,McCabe P J.Alluvial architecture in a sequencesratigraphic framework a case history from the Upper Creta-ceousof southern Utah,U.S.A.In:Flint S S,Bryant I D eds.Thegeological modelling of hydrocarbon reservoirs and outcropanalogues.International Association of Sedimentologists,Spe-cialPublication,1993;(15):21～56.
[9]何志平,邵龙义,等.准噶尔盆地侏罗系八道湾组聚煤作用控制因素分析[J].沉积学报,2004,22(3):450～454.
[10]Nemec W.Coal correlations and intrabasinal subsidence:a newana lytical perspective.In:Kleinspehn K L and Paola C,eds.Newperspectives in basin analysis.New York:Springer-Verlag,1988.161～188.
[11]吴因业.煤层——一种陆相盆地中的成因层序边界[J].石油学报,1996,17(4):28～34.
[12]潘建国.准噶尔盆地红车断裂带古生界火山岩油气藏特征及成藏规律[J].岩性油气藏,2007,19(2):53～56.
[13]卢辉楠.准噶尔盆地的侏罗系[J].地层学杂志.1995,19(3):180～190.
[14]陈代钊,张鹏飞.三角洲平原上网结河的发育与聚煤作用[J].沉积学报,1996,14(3):103～112.
[15]邵龙义,张鹏飞,陈代钊,等.滇东黔西晚二叠世早期辫状河三角洲沉积体系及其聚煤特征[J].沉积学报,1994,12(4):132～139.
[16]杨晓平,李仰春,等.黑龙江东部下白垩统鸡西群层序地层划分与聚煤作用分析[J].华南地质与矿产,2005,(4):40～44.
[17]朱筱敏,康安,等.准噶尔盆地东北缘侏罗系含煤岩系层序地层和隐蔽圈闭[J].石油与天然气地质.2002,23(2):121～126.
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