Shallow Structure of the Crust in the Sulu-Dabie Region, China and its Seismotectonic Implication

Shallow Structure of the Crust in the Sulu-Dabie Region, China and its Seismotectonic Implication
Author:
  • XU Jiren

    XU Jiren

    1 Jiangsu Donghai-Sichuan Longmenshan Crustal Activity National Observation and Research Station, Donghai, Jiangsu 222300, China 2 Key Laboratory of Deep-Earth Dynamics, Ministry of Natural Resources, Beijing 100037, China 3 Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
    在期刊界中查找
    在百度中查找
    在本站中查找
  • LI Haibing

    LI Haibing

    1 Jiangsu Donghai-Sichuan Longmenshan Crustal Activity National Observation and Research Station, Donghai, Jiangsu 222300, China 2 Key Laboratory of Deep-Earth Dynamics, Ministry of Natural Resources, Beijing 100037, China 3 Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
    在期刊界中查找
    在百度中查找
    在本站中查找
  • QI Xuexiang

    QI Xuexiang

    2 Key Laboratory of Deep-Earth Dynamics, Ministry of Natural Resources, Beijing 100037, China 3 Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
    在期刊界中查找
    在百度中查找
    在本站中查找
  • ZHAO Zhixin

    ZHAO Zhixin

    1 Jiangsu Donghai-Sichuan Longmenshan Crustal Activity National Observation and Research Station, Donghai, Jiangsu 222300, China 2 Key Laboratory of Deep-Earth Dynamics, Ministry of Natural Resources, Beijing 100037, China 3 Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
    在期刊界中查找
    在百度中查找
    在本站中查找
Fund Project:

We are profoundly thankful to the three anonymous reviewers for their thoughtful guidance and comments. This study was supported financially by the Natural Science Foundation of China (Grant No. 41374052), the Science Foundation of China Geological Survey (No. J1901), and the project of Regional Geological Survey (No. D1911). Susan Turner (Brisbane) assisted with English language.

  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • | |
  • 文章评论
    摘要:

    Abstract:

    The P-wave velocity structure in the shallow crust is investigated in and around the Sulu-Dabie region by using seismic reflection data for deep soundings in 48 survey profiles and from rock velocity determinations. The observed velocity distributions show obvious heterogeneities in this region. The low velocity anomalies are observed mainly in the west of the Dabie region and the East Sea regions. The high velocity anomalies emerge in the shallow crust of the Sulu and Dabie orogeny. These high-velocity anomalies can be attributed to the ultra-high pressure metamorphosed (UHPM) rock formed by exhumation motion of mantle materials during the orogeny. The high-velocity anomalies in the different shallow layers beneath the Sulu region are located to the northeast of the Tan-Lu fault. The high-velocity anomalies beneath the Dabie region are located southwest of the Tan-Lu fault. Such a distribution pattern of velocity anomaly zones may reveal historical motion of a left-lateral strike-slip for the Tan-Lu fault, which differs from the result of a right-lateral strike-slip motion regime known from modern seismology, indicating a more complex tectonic motion along the Tan-Lu fault.

    参考文献
    相似文献
    引证文献
引用本文

XU Jiren, LI Haibing, QI Xuexiang, ZHAO Zhixin.2021. Shallow Structure of the Crust in the Sulu-Dabie Region, China and its Seismotectonic Implication[J]. ACTA GEOLOGICA SINICA(English edition),95(3):988~995

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-11-13
  • 最后修改日期:2020-05-17
  • 在线发布日期: 2021-06-23
文章二维码