西藏泥盆纪海相红层的分布与时代  

Distribution and ages of the Devonian marine red beds from Xizang(Tibet) Autonomous Region

作　　者：林宝玉[1] 李明[1] 武振杰[1] LIN Baoyu;LI Ming;WU Zhenjie(Key Laboratory of Stratigraphy and Palaeontology,Ministry of Nature and Resources,Institute of Geology,Chinese Academy of Geological Sciences,Beijing,100037)

机构地区：[1]自然资源部地层与古生物重点实验室中国地质科学院地质研究所

出　　处：《地质学报》2019年第10期2383-2402,共20页Acta Geologica Sinica

基　　金：中国地质调查局地质调查项目“蒙西、豫西、鄂西北等典型古生物群与关键地层基础地质调查”(编号DD20190008),“青海区域地质调查与片区总结”(编号12120114079701);青年基金“湖南益阳南坝的笔石地层序列兼论特马道克阶的再分‘(编号41402021)共同资助

摘　　要：在作者及前人对西藏地区泥盆纪地层学、古生物学等资料研究的基础上,作者对该区泥盆纪海相红层进行了初步的系统整理。共识别出6层(套)海相红层,它们是:早泥盆世扎西岗组海相红层(洛赫柯夫阶—布拉格阶)(XDRB1)和春节桥组上部海相红层(埃姆斯阶)(XDRB2),中泥盆世海通组海相红层(艾费尔阶)(XDRB3)和丁宗隆组底部海相红层(吉维阶)(XDRB4),晚泥盆世查果罗玛组(下部)海相红层(弗拉斯阶)(XDRB5)和羌格组顶部海相红层(法门阶)(XDRB6)。所有海相红层均形成于近岸或浅水碳酸盐岩台地环境,因此,属于浅水-半深水陆棚红层,此外,还讨论了中国南方泥盆纪海相红层的分布及全球法门期海相红层广布事件。Based on previous work on stratigraphy and palaeontolgy,six Devonian marine red beds have been recognized in Xizang(Tibet)Autonomous Region.They are Early Devonian XDRB1Zhaxigang Formation marine red beds(Lochkovian to Pragian Stage);XDRB2Cunjieqiao Formation(upper part)marine red beds(Emsian Stage);Middle Devonian XDRB3 Haitong Formation marine red beds(Eifelian Stage);XDRB4Dingzhonglong Formation marine red beds(Givetian Stage);Late Devonian XDRB5Chaguoluoma Formation marine red beds(Frasnian Stage)and XDRB6Jiangge Formation marine red beds(Famennian Stage).All of them belong to the Shelf Red Beds(SRBs).Besides,the distribution of the Devonian marine red beds in South China and the global spatial distribution of Famennian(Devoian)Marine Red Beds are discussed.

关 键 词：泥盆纪 海相红层 分布时代 西藏自治区 

分 类 号：P61[天文地球—矿床学]