张树岐, 蒋丽杰, 冯德臣, 李庆武, 李学彬, 孙中纲. 2005: 藏北南羌塘孜狮桑地区早三叠世牙形刺化石新资料. 地质通报, 24(12): 1173-1174.
    引用本文: 张树岐, 蒋丽杰, 冯德臣, 李庆武, 李学彬, 孙中纲. 2005: 藏北南羌塘孜狮桑地区早三叠世牙形刺化石新资料. 地质通报, 24(12): 1173-1174.
    2005: New data of Early Triassic conodonts in the Zishisang area, southern Qiangtang, northern Tibet, China. Geological Bulletin of China, 24(12): 1173-1174.
    Citation: 2005: New data of Early Triassic conodonts in the Zishisang area, southern Qiangtang, northern Tibet, China. Geological Bulletin of China, 24(12): 1173-1174.

    藏北南羌塘孜狮桑地区早三叠世牙形刺化石新资料

    New data of Early Triassic conodonts in the Zishisang area, southern Qiangtang, northern Tibet, China

    • 摘要: 笔者在藏北开展1∶25万帕度错幅区域地质调查过程中,在达杂迪扎错北面孜狮桑测制地层剖面时发现了产早三叠世牙形刺化石图版Ⅰ)的地层,并新建立了孜狮桑组。孜狮桑位于羌塘盆地中央隆起带1的南边,地层区划隶属于羌塘-保山地层区多玛地层分区。孜狮桑组地层层序如下图1)。上覆地层:新进纪康托组紫红色中层砂质砾岩不整合6.灰黑色薄层亮晶砂灰岩59.89m5.灰白色中层含硅质结核细晶白云质灰岩57.18m4.灰白色、灰黑色薄层含生物碎屑亮晶砂屑灰岩27.25m3.灰黑色薄层泥晶灰岩,产牙形刺Neospathodus hom eri,Prio-niodella ctenoides,H ibbardel…

       

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