塔里木盆地喀什凹陷侏罗系沉积特征及其演化
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摘要
野外地质调查和室内地震解释认为 ,喀什凹陷侏罗系为陆相河流—湖泊沉积 ,整个侏罗纪代表了一个水体由浅—深—浅的沉积演化 ,早侏罗世莎里塔什组属干燥、氧化环境中的冲积扇沉积 ,到康苏组时演化为潮湿气候条件下的辫状河流沉积 ;中侏罗世盆地沉积范围扩大 ,出现湖泊和扇三角洲沉积 ,晚侏罗世盆地又演化为干燥—半干燥环境下的河流与冲积扇沉积。
Based on the outcrops and seismic interpretation, it was suggested that the strata of Jurassic in the Kashi Depression, Tarim Basin, were continental facies fluvial and lacustrine deposits. The whole succession of Jurassic reflected a complete sedimentary cycle of shallow lake - deep lake - shallow lake facies. The Lower Jurassic Shalitashi Group was attributed to the alluvial fan deposits in a dry climatic environment. The Kangsu Group in age of late Early Jurassic was a braided fluvial sediments, recording a wet climate. In the Middle Jurassic, the depositional basin expanded, in which the lacustrine and fan delta sediments took the precedence. The basin was filled by the river and alluvial fan deposits, indicating a dry semi dry climatic environment again in Later Jurassic.
Based on the outcrops and seismic interpretation, it was suggested that the strata of Jurassic in the Kashi Depression, Tarim Basin, were continental facies fluvial and lacustrine deposits. The whole succession of Jurassic reflected a complete sedimentary cycle of shallow lake - deep lake - shallow lake facies. The Lower Jurassic Shalitashi Group was attributed to the alluvial fan deposits in a dry climatic environment. The Kangsu Group in age of late Early Jurassic was a braided fluvial sediments, recording a wet climate. In the Middle Jurassic, the depositional basin expanded, in which the lacustrine and fan delta sediments took the precedence. The basin was filled by the river and alluvial fan deposits, indicating a dry semi dry climatic environment again in Later Jurassic.
引文
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钟大康,朱筱敏,王贵文,谢庆宾.2002.塔里木盆地喀什地区侏罗纪古环境.古地理学报,4(4):47—54.ZhongDakang,ZhuXiaomin,WangGuiwenandXieQingbin.2002.ThepaleoenvironmentsoftheJurassicofKashiarea,TarimBasin.JuornalofPalaeogeography,4(4):47—54.
程裕淇,杨遵义.2000.中国地层典:侏罗系.北京:地质出版社.1—154.ChengYuqiandYangZunyi.2000.DictionaryofStratigrphyofChina:Jurassic.Beijing:GeologicalPubl.House.1—154.
郭宪璞.1991.新疆克孜勒苏群的沉积环境探讨———兼论塔里木盆地西部白垩系最低海相层位.地质学报,65(2):188—198.GuoXianpu.1991.AnapproachtothedepositionalenvironmentoftheCretaceousKizilsuGroup—thelowermostmarinehorizonoftheCretaceousfromthewesternTarimbasin.ActaGeologicaSinica,65(2):188—198.
何承全.1991.新疆塔里木盆地西部晚白垩世至早第三纪沟鞭藻及其它藻类.北京:科学出版社.1—47.HeChengquan.1991.TheLateCretaceousEarlyTertiaryMicrophytoplanktonfromtheWesternTarimBasin,SouthXinjiang,China.Beijing:SciencePress.1—47.
蓝 秀,魏景明.1995.新疆塔里木盆地西部晚白垩世至早第三纪双壳类动物群.北京:科学出版社.1—214.LanXiuandWeiJingming.1995.TheLateCretaceousEarlyTertiaryMarineBivalveFaunafromtheWesternTarimBasin,SouthXinjiang,China.Beijing:SciencePress.1—214.
刘兆生.1996.新疆乌恰县沙里塔什组生物地层新知.新疆地质,14(1):86—91.LiuZhaosheng.1996.NewrecognitionofbiostratigrphyofShalitashiformationinWuqiaarea,Xinjiang.XinjiangGeology,14(1):86—91.
罗金海,车自成,李继亮.2000.中亚及中国西部侏罗纪沉积盆地的构造特征.地质科学,35(4):404—413.LuoJinhai,CheZichengandLiJiliang.2000.StructuralfeaturesoftheJurassicbasinsinWesternChinaandMiddleAsia.ChineseJour.Geol.(formerly,ScientiaGeologicaSinica),35(4):404—413
潘华璋,杨胜秋,孙东立.1991.新疆塔里木盆地西部晚白垩世至早第三纪腹足类、海胆和腕足类.北京:科学出版社.1—146.PanHuazhang,YangShengqiuandSunDongli.1991.TheLateCretaceousEarlyTertiaryMarineGastropod,EchinoidsandBrachinopodsfromtheWesternTarimBasin,SouthXinjiang,China.Beijing:SciencePress.1—146.
唐天福,杨恒仁,蓝 秀.1989.新疆塔里木盆地西部白垩纪至早第三纪海相地层及含油性.北京:科学出版社.1—138.TangTianfu,YangHengrenandLanXiu.1989.TheLateCretaceousEarlyTertiaryMarineStrataandPetroleumGeologyfromtheWesternTarimBasin,SouthXinjiang,China.Beijing:SciencePress.1—138.
唐天福,薛耀松,俞从流.1992.新疆塔里木盆地西部晚白垩世至早第三纪海相地层沉积特征及沉积环境.北京:科学出版社.1—58.TangTianfu,XueYaosongandYuCongliu.1992.TheLateCretaceousEarlyTertiarySedimentaryCharacteristicsandEnvironmentsoftheMarineStratafromtheWesternTarimBasin,SouthXinjiang,China.Beijing:SciencePress.1—58.
新疆维吾尔自治区区域地层表编写组.1981.西北地区区域地层表,新疆准噶尔分册.北京:地质出版社.347—371.EditorialGroupofRegionalStratigraphicalTablesofXinjiangUygurAutonomousRegion.1981.RegionalStratigraphicTablesofNWChinaArea,FasciculeofJunggar,XinjiangUygurAutonomousRegion.Beijing:GeologicalPubl.House.347—371.
雍天寿.1989.古特提斯海北支塔里木古海湾岩相古地理.北京:科学出版社.1—107.YongTianshou.1989.TheSedimentaryFaciesandPalaeogeographyofTarimGulfofNorthernBranchinPalaeoTethys.Beijing:Sci encePress.1—107.
张一勇,詹家祯.1991.新疆塔里木盆地西部晚白垩世至早第三纪孢粉.北京:科学出版社.1—57.ZhangYiyongandZhanJiazhen.1991.TheLateCretaceousEarlyTertiarySporesandPollenfromtheWesternTarimBasin,SouthXinjiang,China.Beijing:SciencePress.1—57.
周志毅(主编).2001.塔里木盆地各纪地层.北京:科学出版社.236—260.ZhouZhiyi(Ed.inChief).2001.EachStratigraphyUnitsofTarimBasin.Beijing:SciencePress.236—260.
钟大康,朱筱敏,王贵文,谢庆宾.2002.塔里木盆地喀什地区侏罗纪古环境.古地理学报,4(4):47—54.ZhongDakang,ZhuXiaomin,WangGuiwenandXieQingbin.2002.ThepaleoenvironmentsoftheJurassicofKashiarea,TarimBasin.JuornalofPalaeogeography,4(4):47—54.
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