KURUKTAG UR-OCEAN RIFT AND MANTLE PLUME IN THE TARIM BASIN
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摘要: 根据塔里木库鲁克塔格地区的地质地球化学资料,认为该区在震旦纪-早奥陶世发育地幔热柱——大陆裂谷到大洋扩张之间的地幔柱.库鲁克塔格震旦纪火山岩构成一个典型的双峰值火山岩系,主要由酸性火山岩与基性火山岩组成,缺少中酸性火山岩.基性火山岩的稀土模式为陡右倾,富轻稀土,与地幔热柱成因的玄武岩具相似的稀土元素地球化学特征.在塔里木盆地东北部,寒武与奥陶纪由东至西沉积相展布依次为盆地相、斜坡相、台地边缘相、局限-开阔台地相,具有被动大陆边缘的沉积特征.因此提出了库鲁克塔原洋裂谷和满加尔初始被动大陆边缘的新见解.环满加尔初始大陆边缘具有良好的油气勘探前景.Abstract: A hot mantle plume,i.e.the one in between of continental rift and oceanic spreading,indicated by geochemical data,was developed during Sinian to Early Ordovician in Kuruktag area of the Tarim Basin.The Sinian volcanics are typical bimodal volcanic rocks in Kuruktag area,which are consisted of acidic and basic volcanic rocks but with rare medium acidic one.REE distributive pattern of basic volcanic rocks showed steep right dip and was rich in light REE which is in accordance with REE geochmical characters of basalt from mantle plume.In the northeast of Tarim Basin,depositional facies were arranged as basinal,slope,platform margin and restricted-open platform facies from east to west in Cambrian to Ordovician,which showed the sedimentation of passive continental margin.Therefore,the Kuruktag ur-ocean rift and Manjaer original continental margin were proposed.There is potential for petroleum exploration around the Manjaer original continental margin.
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Key words:
- mantle plume /
- ur-ocean rift /
- original passive continental margin /
- Tarim
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[1] 康玉柱,蔡希源.中国古生代海相油气田形成条件与分布[M].乌鲁木齐:新疆科技卫生出版社,2002.1-288. [2] 孙肇才.试论塔里木盆地风格(一)[J].海相油气地质,1996,1(1):14-19. [3] 汤良杰.塔里木盆地演化和构造样式[M].北京:地质出版社,1996.1-136. [4] 陈发景,汪新文,张光亚,等.塔里木盆地北部构造演化与油气关系[M].北京:地质出版社,1996.1-177. [5] 贾承造,魏国齐,姚慧君,等.盆地构造演化与区域构造地质[M].北京:石油工业出版社,1995.1-174. [6] 康玉柱,康志宏,汤良杰,等.塔里木盆地的演化和原型迭加控油[A].张渝昌.中国含油气盆地原型分析[C].南京:南京大学出版社,1997.231-261. [7] 康志宏,汤良杰,秦德余.塔里木盆地的原型结构与叠加控油作用[A].张功成.中国含油气盆地构造[C].北京:石油工业出版社,1999.233-260. [8] 徐旭辉.塔里木古生代原型盆地分析的油气勘探意义[J].石油与天然气地质,2002,23(3):224-228. [9] 丁道桂,汤良杰.塔里木盆地形成与演化[M].南京:河海大学出版社,1996.1-294. [10] 高长林,崔可锐,钱一雄,等.天山微板块构造与塔北盆地[M].北京:地质出版社,1995.1-284. [11] 周棣康,周金钟,赵明.塔里木盆地东北地区寒武、奥陶纪古大陆边缘沉积与油气[A].贾润胥.中国塔里木盆地北部油气地质研究(第一辑),地层沉积[C].武汉:中国地质大学出版社,1991.126-137. [12] 周金钟,周棣康,赵明.新疆库鲁克塔格地区震旦纪地层及沉积特征[A].贾润胥.中国塔里木盆地北部油气地质研究(第一辑),地层沉积[M].武汉:中国地质大学出版社,1991.118-125. [13] 高振家,王务严.新疆震旦系[M].乌鲁木齐:新疆人民出版社,1985.1-126. [14] Pearce J A,Cann J R,Tectonic setting of basic volcanic rocks determined using trace element analysis[J].Earth Planet Sci Lett,1973,12:339-348. [15] Bhatia M R.Plate tectonic and geochemical composition of sandstones[J].Geol,1983,91:611-619. [16] Campbell I H,Griffiths R W.The evolution of the mantle's chemical structure[J].Lithos,1993,30 (3/4):389-399. [17] Bhatia M R.Rare earth element geochemistry of Austrilian Paleonic grawacks mudrocks,provenance and tectonic control [J].Sed Geol,1985,45-52. [18] Roser B P,Korsch R J.Determination of tectonic setting of sandstone-mudstone suites using SiO2 content and K2O/Na2O ratio[J].J Geol,1986,94:635-650. [19] 沈林克,周永昌,韩革华,等.塔里木盆地北部寒武、奥陶系地震地层学研究[A].贾润胥.中国塔里木盆地北部油气地质研究(第一辑),地层沉积[C].武汉:中国地质大学出版社,1991.138-146. [20] 孙肇才.试论塔里木盆地风格(二)[J].海相油气地质,1996,1(2):9-13. [21] 何起祥,王东坡.论古裂谷沉积作用[J].长春地质学院学报,1985,(3):49-54. [22] 李红阳,牛树银,王立峰,等.幔柱构造[M].北京:地震出版社,2002.1-224. [23] Burke K C,Dewey G F.Plume-generated triple junctions:Key indicators in applying plate tectonics to old rocks[J].J Geol,1973,81:406-433. [24] 丁道桂,刘伟新,崔可锐,等.塔里木中新生代前陆盆地构造分析与油气领域[J].石油实验地质,1997,19(2):97-107. [25] 吴根耀,马力.试论"盆""山"的耦合和脱耦及其运动学[J].石油实验地质,2003,25(2):99-109. [26] 刘文,李永宏,张涛,等.塔河油田奥陶系碳酸盐岩沉积相及地层学研究[J].石油实验地质,2002,24(2):104-109. [27] 周荔青,张淮.中国海相残留盆地油气成藏系统特征[J].石油实验地质,2002,24(6):483-489. [28] 朱夏.活动论构造历史观[J].石油实验地质,1991,13(3):201-209. [29] 汤良杰.略论塔里木盆地主要构造运动[J].石油实验地质,1997,19(2):108-114. [30] 罗志立.试评A-俯冲带术语在中国大地构造学中的应用[J].石油实验地质,1994,16(4):312-320. [31] 刘树根,罗志立.一种新的陆内俯冲类型——龙门山型俯冲成因机制研究[J].石油实验地质,1991,13(4):314. [32] 张渝昌.关于盆地油气动态成藏系统研究的理论问题[A].周玉琦.朱夏油气地质理论应用研究文集[C].北京:地质出版社,2001.207-220. [33] Hill R I.Mantle plume and continental tectonics[J].Science,1992,256:186-193. [34] 牛树银,李红阳,孙爱群,等.幔枝构造理论与找矿实践[M].北京:地震出版社,2002,1-243.
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