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    Volume 29 Issue 6
    Jun.  2004
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    Article Navigation >  Earth Science  > 2004  >  29(6): 667-673
    WANG You-xue, JIANG Mei, HAN Guo-hua, 2004. Crustal Velocity Structure beneath the Site of Chinese Continental Scientific Drilling Site. Earth Science, 29(6): 667-673.
    Citation: WANG You-xue, JIANG Mei, HAN Guo-hua, 2004. Crustal Velocity Structure beneath the Site of Chinese Continental Scientific Drilling Site. Earth Science, 29(6): 667-673.
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    Crustal Velocity Structure beneath the Site of Chinese Continental Scientific Drilling Site

    • Received Date: 2004-05-12
    • Publish Date: 2004-11-25
      Abstract
    • In order to study the deep structure, spatial tectonic characteristics and the dynamic process for the Dabie-Sulu ultral-high metamorphic belt, a wide-angle reflection/refraction seismic survey was conducted in the Chinese Continental Scientific Drilling (CCSD) site. The crustal velocity structure beneath the CCSD site has been established based on wide-angle seismic reflection/refraction data acquired at the site. According to the results, the crust beneath CCSD is composed of three layers: the upper, middle and lower crust, with velocities of < 6.20 km/s, 6.40 km/s, and 6.60 km/s, and a thickness of ~10 km, ~10 km, and ~12 km respectively. The crust thickness is 31 km around with an average velocity of 6.30 km/s. However, the reversed velocity in the upper crust implies an ultrahigh-pressure metamorphic (UHPM) layer (body) with a shape of uplift beneath or near the CCSD site.

       

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