塔里木盆地北部星火3井前中生界岩浆岩年代学特征及地质意义
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摘要
笔者对塔里木盆地北部库车坳陷南缘斜坡的星火3井钻遇的一套岩浆岩进行岩石学分析及年代学研究。星火3井区岩浆岩主要由酸性、基性喷出岩组成,星火3井主要钻揭霏细岩。对星火3井的1个岩心样品进行LA-ICP-MS锆石U-Pb年龄测定,获得霏细岩年龄为(294±10)Ma,代表该区二叠纪岩浆喷发的最晚年龄。表明库车坳陷南缘与塔北其他地区一样,发育二叠系岩浆岩。
In this paper,a set of magmatic rocks drilled from XH3 well in the southern margin of Kuche depression have been studied on lithology and chronology.These magmatic rocks are mainly composed of acidic and basic extrusive rocks,and a set of felsite have beendrilled from XH3 well.A core sample of XH3 well has been studied on U-Pb zircon geochronology by LA-ICP-MS.The zircon U-Pb dates are(294±10)Ma,which stands for the latest age of Permian magmatic eruption.This dating data suggests that the Permian magmatic rocks extensively developed in the southern part of the Kuche depression,corresponding to the other parts of northern Tarim basin.
In this paper,a set of magmatic rocks drilled from XH3 well in the southern margin of Kuche depression have been studied on lithology and chronology.These magmatic rocks are mainly composed of acidic and basic extrusive rocks,and a set of felsite have beendrilled from XH3 well.A core sample of XH3 well has been studied on U-Pb zircon geochronology by LA-ICP-MS.The zircon U-Pb dates are(294±10)Ma,which stands for the latest age of Permian magmatic eruption.This dating data suggests that the Permian magmatic rocks extensively developed in the southern part of the Kuche depression,corresponding to the other parts of northern Tarim basin.
引文
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陈汉林,杨树锋,王清华,等.塔里木板块早-中二叠世玄武质岩浆作用的沉积响应[J].中国地质,2006,33(3):545-552.CHEN HL,YANG SF,WANG QH,et al.Sedimentary response to the Ear ly-Mid Permian basaltic magmatism in the Tar im plate[J].Geology in China,2006,33(3):545-552.
程海艳,李江海,赵星,等.塔北隆起二叠纪岩浆岩产状的地震解释及其侵位模式[J].岩石学报,2010,26(1):283-290.CHENG HY,LI JH,ZHAO X,et al.Seismic interpretation of occurrence of Permian magmatite and its emplacement in Tabei uplift,Tarim basin[J].Acta Petrologica Sinica,2010,26(1):283-290(in Chinese with English abstract).
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钱一雄,何治亮,蔡习尧,等.塔中地区上泥盆统东河砂岩和志留系砂岩的锆石特征、SHRIMP U-Pb年龄及地质意义[J].岩石学报,2007,23(11):3003-3014.QIAN YX,HE ZL,CAI XY,et al.Characteristics of and U-Pb ages of zircons and its implication from zircon of Donghe sandstones of the Upper Devonian and Silurian sandstones in Tazhong area,Tarim basin[J].Acta Petrologica Sinica,2007,23(11):3003-3014.
许志琴,杨经绥,梁风华,等.喜马拉雅地体的泛非-早古生带造山事件年龄纪录[J].岩石学报,2005,21(1):1-12.XU ZQ,YANG JS,LIANG FH,et al.Pan-African and Early Paleozoic orogenic events in the Himalaya terrane:Inference from SHRIMP U-Pb zircon ages[J].Aeta Petrologica Sinica,2005,21(l):1-12(in Chinese with English abstract).
杨金龙,罗静兰,何发歧,等.塔河地区二叠系火山岩储集层特征[J].石油勘探与开发,2004,31(4):44-47.YANG JL,LUO JL,HE FQ,et al.Permian volcanic reservoirs in the Tahe region[J].Petroleum Exploration and Development,2004,31(4):44-47.
杨树锋,厉子龙,陈汉林,等.塔里木盆地二叠纪正长岩的发现及其构造意义[J].地球化学,1996,25(2):121-128.YANG SF,LI ZL,CHEN HL,et al.The discovery of Permian syenite inside Tarim Basin and its geodynamic significance[J].Geochimica,1996,25(2):121-128.
于峻川,莫宣学,董国臣,等.塔里木北部二叠纪长英质火山岩年代学及地球化学特征[J].岩石学报,2011,27(7):2184-2194.YU JC,MO XX,DONG GC,et al.Felsic volcanic rocks from northern Tarim,NWChina:Zircon U-Pb dating and geochemical characteristics[J].Acta Petrologica Sinica,2011,27(7):2184-2194.
贠海朋.塔里木微板块震旦系-寒武系火山岩地球化学及大地构造意义[J].西北地质,2003,36(3):1-6.YUN HP.Geochemistry and their tectonic significance of the volcanic rocks from Tarim micro-plate[J].Northwestern Geology,2003,36(3):1-6.
ANDERSEN T.Correction of common lead in U-Pb analyses that do not report 204Pb[J].Chemical Geology,2002,192(1-2):59-79.
LUDWIG KR.Isoplot 3.00:A Geochronological Toolkit for Microsoft Excel.Berkeley:Berkeley Ceochoronology Center,2003,39.
TIAN W,CAMPBELL IH,ALLEN CM,et al.The Tarim picrite-basalt-rhyolite suite,a Permian flood basalt from northwest China with contrasting rhyolites produced by fractional crystallization and anatexis.Contributions to Minerralogy and Petrology,in press(DOI:10.1007/s00410-009-0485-3).2010.
陈汉林,杨树锋,厉子龙,等.塔里木盆地二叠纪大火成岩省发育的时空特点[J].新疆石油地质,2009,30(2):179-182.CHAN HL,YANG SF,LI ZL,et al.Spatial and temporal characteristics of Permian largeigneous province in Tarim basin[J].Xinjiang Petroleum Geology,2009,30(2):179-182.
陈汉林,杨树锋,王清华,等.塔里木板块早-中二叠世玄武质岩浆作用的沉积响应[J].中国地质,2006,33(3):545-552.CHEN HL,YANG SF,WANG QH,et al.Sedimentary response to the Ear ly-Mid Permian basaltic magmatism in the Tar im plate[J].Geology in China,2006,33(3):545-552.
程海艳,李江海,赵星,等.塔北隆起二叠纪岩浆岩产状的地震解释及其侵位模式[J].岩石学报,2010,26(1):283-290.CHENG HY,LI JH,ZHAO X,et al.Seismic interpretation of occurrence of Permian magmatite and its emplacement in Tabei uplift,Tarim basin[J].Acta Petrologica Sinica,2010,26(1):283-290(in Chinese with English abstract).
刘亚雷,胡秀芳,黄智斌,等.塔里木盆地塔北隆起西部火山岩40 Ar-39 Ar年代学和地球化学特征[J].岩石学报,2012,28(8):2423-2434.LIU YL,HU XF,HUANG ZB,et al.40 Ar-39 Ar geochronology and geochemistry of the volcanic rocks from the west segment of Tabei uplift,Tarim Basin[J].Acta Petrologica Sinica,2012,28(8):2423-2434.
罗金海,车自成,张国锋,等.塔里木盆地西北缘与南天山早-中二叠世盆山耦合特征[J].岩石学报,2012,28(8):2506-2514.LUO JH,CHE ZC,ZHANG GF,et al.Early-Middle Permian basin-mountain coupling features between northwestern margin of the Tarim basin and the South Tianshan orogen[J].Acta Petrologica Sinica,2012,28(8):2506-2514.
罗静兰,翟晓先,蒲仁海,等.塔河油田的层位归属、火山岩岩石学与岩相学特征[J].地质科学,2006,41(3):378-391.LUO JL,ZHAI XX,PU RH,et al.Horizon petrology and litho facies of the volcanic rocks in the Tahe oilfield,Northern Tarim basin[J].Chinese Journal of Geology,2006,41(3):378-391.
钱一雄,何治亮,蔡习尧,等.塔中地区上泥盆统东河砂岩和志留系砂岩的锆石特征、SHRIMP U-Pb年龄及地质意义[J].岩石学报,2007,23(11):3003-3014.QIAN YX,HE ZL,CAI XY,et al.Characteristics of and U-Pb ages of zircons and its implication from zircon of Donghe sandstones of the Upper Devonian and Silurian sandstones in Tazhong area,Tarim basin[J].Acta Petrologica Sinica,2007,23(11):3003-3014.
许志琴,杨经绥,梁风华,等.喜马拉雅地体的泛非-早古生带造山事件年龄纪录[J].岩石学报,2005,21(1):1-12.XU ZQ,YANG JS,LIANG FH,et al.Pan-African and Early Paleozoic orogenic events in the Himalaya terrane:Inference from SHRIMP U-Pb zircon ages[J].Aeta Petrologica Sinica,2005,21(l):1-12(in Chinese with English abstract).
杨金龙,罗静兰,何发歧,等.塔河地区二叠系火山岩储集层特征[J].石油勘探与开发,2004,31(4):44-47.YANG JL,LUO JL,HE FQ,et al.Permian volcanic reservoirs in the Tahe region[J].Petroleum Exploration and Development,2004,31(4):44-47.
杨树锋,厉子龙,陈汉林,等.塔里木盆地二叠纪正长岩的发现及其构造意义[J].地球化学,1996,25(2):121-128.YANG SF,LI ZL,CHEN HL,et al.The discovery of Permian syenite inside Tarim Basin and its geodynamic significance[J].Geochimica,1996,25(2):121-128.
于峻川,莫宣学,董国臣,等.塔里木北部二叠纪长英质火山岩年代学及地球化学特征[J].岩石学报,2011,27(7):2184-2194.YU JC,MO XX,DONG GC,et al.Felsic volcanic rocks from northern Tarim,NWChina:Zircon U-Pb dating and geochemical characteristics[J].Acta Petrologica Sinica,2011,27(7):2184-2194.
贠海朋.塔里木微板块震旦系-寒武系火山岩地球化学及大地构造意义[J].西北地质,2003,36(3):1-6.YUN HP.Geochemistry and their tectonic significance of the volcanic rocks from Tarim micro-plate[J].Northwestern Geology,2003,36(3):1-6.
ANDERSEN T.Correction of common lead in U-Pb analyses that do not report 204Pb[J].Chemical Geology,2002,192(1-2):59-79.
LUDWIG KR.Isoplot 3.00:A Geochronological Toolkit for Microsoft Excel.Berkeley:Berkeley Ceochoronology Center,2003,39.
TIAN W,CAMPBELL IH,ALLEN CM,et al.The Tarim picrite-basalt-rhyolite suite,a Permian flood basalt from northwest China with contrasting rhyolites produced by fractional crystallization and anatexis.Contributions to Minerralogy and Petrology,in press(DOI:10.1007/s00410-009-0485-3).2010.