李月森,马德胜,符宏斌,白培荣.西藏改则县北亭贡南部地区上侏罗统吐卡日组确定及其地质意义[J].贵州地质,2015,32(4):267-270,266 |
西藏改则县北亭贡南部地区上侏罗统吐卡日组确定及其地质意义 |
Determination of Tukari Formation,Upper Jurassic Series and Its Geological Significance in South Beitinggong Area,Gaize,Tibet |
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DOI: |
中文关键词: 西藏 北亭贡南部 晚侏罗世 吐卡日组 |
英文关键词:Tibet South Beitinggong Late Jurassic Tukari formation Determination |
基金项目:中国地质调查局项目(项目编码:1212010818033;1212011086035;1212011121230;12120114062301) |
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中文摘要: |
实测西藏改则县甲不拉东剖面过程中,在前人原划分为二叠系下拉组中采集到属于晚侏罗世时代的生物化石(Microso lena spMeandronhyllia、Thecosmilia spBurgundia spBuneia sp),根据岩石组合及生物化石面貌等区域地层对比,将该套地层确定为上侏罗统吐卡日组。该套地层的确定,为班公湖-怒江结合带侏罗纪珊瑚动物群的研究、洋盆的萎缩、消亡及洋-陆转化提供新的基础地质资料。 |
英文摘要: |
When the sections in Gaize are tested,the organic fossil(Microso lena spMeandronhyllia,Thecosmilia spBurgundia spBuneia sp)in Late Jurassic are found which are thought to be Xiala formation of Permian by former researchersAccording to the regional strata comparison of rock association and organic fossil appearance,this strata is ensured to be Tukari formation of Upper JurassicThe strata will afford new information for coral fauna study,ocean basin shrank and subduction,ocean-land translation in Bangonghu-Nujiang joint area |
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