白培荣,熊兴国,马德胜,蒋开源,李月森,吴滔.西藏改则多不杂地区中侏罗世介形类化石的发现及其地层归属探讨[J].贵州地质,2019,36(3):228-231
西藏改则多不杂地区中侏罗世介形类化石的发现及其地层归属探讨
Discovery of Middle Jurassic Ostracoda Fossils and Discussion on Stratigraphic Assignment in the Duobuza aera of Gaze County, Tibet
投稿时间:2019-04-01  
DOI:
中文关键词:  拉贡塘组  介形类化石  中侏罗世  改则多不杂
英文关键词:Lagongtang Formation  Ostracods Fossils  Middle Jurassic  Duobuza aera of Gaze County
基金项目:中国地质调查局项目(编号:1212010818033)。
作者单位
白培荣 贵州省地质调查院贵州贵阳550081
贵州省地质调查院院士工作站贵州贵阳550081 
熊兴国 贵州省地质调查院贵州贵阳550081 
马德胜 贵州省地质调查院贵州贵阳550081 
蒋开源 贵州省地质调查院贵州贵阳550081 
李月森 贵州省地质调查院贵州贵阳550081 
吴滔 贵州省地质调查院贵州贵阳550081 
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中文摘要:
      通过1∶5万区域地质矿产调查,在西藏改则多不杂地区前人划分的下侏罗统曲色组变质碎屑岩层位中,采集到中侏罗世(可能延续至晚侏罗世)的Amphicythere?sp2,Darwinula lufengensis Ye,Metacypris menglaensis Ye介形类化石。结合该套地层的岩性组合特征与区域资料对比,把该套地层暂归属为拉贡塘组,这一地层的归属不仅对南羌塘侏罗系地层的划分对比、地层格架建立提供了重要的依据,而且还丰富了侏罗纪地层古生物数据,为今后进一步的地质研究工作提供了线索,具有重要的研究意义。
英文摘要:
      Based on a 1∶50000 regional geological and mineral survey, the metamorphic clastic rocks of the Quse Formation of the Lower Jurassic, which were divided by predecessors in Duobuza areas of Gaize, Tibet, were collected from the Amphithoere sp.2, Darwinula lufengensis Ye, Metacypris menglaensis Ye Ostracods of the Middle Jurassic (possibly extending to the Late Jurassic). Combining the lithologic assemblage characteristics of the stratum with the regional data, the stratum is temporarily assigned to Lagongtang Formation, which not only provides an important basis for the division and correlation of Jurassic strata and the establishment of stratigraphic framework in South Qiangtang, but also enriches the data of Jurassic strata and paleontology, and provides clues for further geological research in the future. It has important studying significance.
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