Advanced Search

Indexed by SCI、CA、РЖ、PA、CSA、ZR、etc .

Turn off MathJax
Article Contents
yong Yue, Jingchun Tian, Chuanyan Huang. Formation Mechanism of the Paleocene basal conglomerate, southwest Tarim Basin. Journal of Earth Science. doi: 10.1007/s12583-022-1696-z
Citation: yong Yue, Jingchun Tian, Chuanyan Huang. Formation Mechanism of the Paleocene basal conglomerate, southwest Tarim Basin. Journal of Earth Science. doi: 10.1007/s12583-022-1696-z

Formation Mechanism of the Paleocene basal conglomerate, southwest Tarim Basin

doi: 10.1007/s12583-022-1696-z
  • Received Date: 17 Jun 2021
  • Rev Recd Date: 07 Jun 2022
  • Accepted Date: 08 Jun 2022
  • Available Online: 21 Jun 2022
  • Abstract: Most knowledge about the Cretaceous-Paleogene strata in the Tarim Basin is mainly inferred from the outcrops at the basin’s margin,but first time in the basin. The formation mechanism of the Paleocene basal conglomerate was determined using geochemical isotopes of the breccia from well PBX1 in the southwestern Tarim Basin. The results showed that the global K/Pg (i.e., Cretaceous/Paleogene) clay layer boundary was located in the middle of the Paleocene basal conglomerate at the depth of 7066.75m in well PBX1. In the Late Cretaceous, associated with volcanic activities and earthquakes, the caldera in the PBX1 well block formed an annular depression with large elevation differences in response to the Pamir block collision. As a result, the collapsed breccia with storm tide genesis deposited at the periphery and inside of the depression, characterized by syn-sedimentary deformation. During the Paleocene, multiple sets of interbedded carbonate and collapsed breccia deposited in response to multi-phased transient transgression-regression cycles. The transportation of breccia exhibited near-source accumulation/extremely close or in-situ rapid accumulation. The studied region is located in the eastern end of the Tethys Sea, the Late Cretaceous-Early Paleocene breccia is of great significance for reconstructing the paleogeography of the Tarim basin in Tethys. Key words: South-western Tarim;Paleogene system;Breccia;Attribution and genesis

     

  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views(5) PDF downloads(2) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return