岳昭. 1990: 湖北省房县灯影组西蒿坪段三叶虫的首次发现及其意义. 地质通报, (3): 277-282+288.
    引用本文: 岳昭. 1990: 湖北省房县灯影组西蒿坪段三叶虫的首次发现及其意义. 地质通报, (3): 277-282+288.
    YUE Zhao. 1990: DISCOVERY OF TRILOBITES FROM THE XIHAOPING MEMBER (LOWER CAMBRIAN) OF THE DENGYING FORMATION IN FANGXIAN COUNTY HUBEI PROVINCE. Geological Bulletin of China, (3): 277-282+288.
    Citation: YUE Zhao. 1990: DISCOVERY OF TRILOBITES FROM THE XIHAOPING MEMBER (LOWER CAMBRIAN) OF THE DENGYING FORMATION IN FANGXIAN COUNTY HUBEI PROVINCE. Geological Bulletin of China, (3): 277-282+288.

    湖北省房县灯影组西蒿坪段三叶虫的首次发现及其意义

    DISCOVERY OF TRILOBITES FROM THE XIHAOPING MEMBER (LOWER CAMBRIAN) OF THE DENGYING FORMATION IN FANGXIAN COUNTY HUBEI PROVINCE

    • 摘要: 现在对西蒿坪动物群的时代存在意见分歧,争论很大。为解决这一问题,笔者研究了房县有关剖面,并在其中发现三叶虫化石与小壳化石共生。在陕西省镇巴也在西蒿坪动物群中发现三叶虫化石;在新疆乌什西蒿坪动物群与三叶虫化石碎片及牙形类共生。因此,通过对比,西蒿坪动物群时代应为早寒武世筇竹寺晚期。

       

      Abstract: After the discovery of the Xihaoping Fauna in Fangxian, Hubei, now there are three opinions on the age of the Xihaoping Fauna: (1)the fauna is equivalent to fossil assemblages Ⅰ and Ⅱ of the Meishucunian Stage, (2) it is equivalent to fossil assemblage Ⅱ of the Meishucunian Stage, and (3) its age is later than the Meishucunian. To solve this problem, the author studied related sections in Fangxian and found that trilobite fossils (Plate Ⅳ) coexist with small shelly fossils. According to these fossils, the Xihaoping Fauna can be correlated with the Upper Atdabanian (Adyshevitheca Zone in the upper part of the Shabaktin Formation) in Maly Karatau, Kazakhstan, the Comley limestone in Comley, England, and the Callavia Zone in the Weymouth Formation, Avalon, North America. In China, the Xihaoping Fauna has been found to coexist with trilobites Eoredlichia, Mianxiandiscus etc. in Zhenba, Shaanxi. In Wush (Tarim), Xinjiang, the Xihaoping Fauna occur together with trilobite fragments and protoconodonts such as Amphigeisina, Gapparodus, Jiangshanodus and Xinjiangodus. So the geological age of the Xihaoping Fauna should be Late Qiong-zhusian (Early Cambrian).

       

    /

    返回文章
    返回