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Volume 22 Issue 2
Apr 2011
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Journal of Earth Science  > 2011  >  22(2): 214-225.
Bao Mei, Yixian Xu, Hui Qian. Active Source Tomography in Northwestern Xinjiang, China: Implication for Mineral Distribution. Journal of Earth Science, 2011, 22(2): 214-225. doi: 10.1007/s12583-011-0174-9
Citation: Bao Mei, Yixian Xu, Hui Qian. Active Source Tomography in Northwestern Xinjiang, China: Implication for Mineral Distribution. Journal of Earth Science, 2011, 22(2): 214-225. doi: 10.1007/s12583-011-0174-9
shu

Active Source Tomography in Northwestern Xinjiang, China: Implication for Mineral Distribution

doi: 10.1007/s12583-011-0174-9
  • 1.

    Tomographic Earth System Imaging Center, China University of Geosciences, Wuhan, 430074, China

  • 2.

    State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, 430074, China

  • 3.

    Institute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037, China

More Information
  • Corresponding author: Bao MEI, bao.mei.cug@gmail.com
  • Received Date: 08 Sep 2010
  • Accepted Date: 28 Dec 2010
  • Publish Date: 01 Feb 2011
    Abstract
  • The main aim of this work is to understand the distribution of minerals by obtaining a shallow velocity structure around the Karatungk (喀拉通克) region. Data were acquired in 2009 by a denser array in deploying a transportable seismometer with 4.5 Hz vertical geophone. All the P-wave arrival times are picked automatically with Akaike information criterion, and then checked manmachine interactively by short-receiver geometry. The database for local active-source tomographic inversion involves 4 241 P-wave arrival time readings from 96 shots and three quarry blasts. Checkerboard tests aimed at checking the reliability of the obtained velocity models are presented. The resulting Vp distribution slices show a complicated 3-D structure beneath this area and offer a better understanding of three well-defined mineral deposits. Near the surface we observe a series of zones with slightly high-velocity which probably reflect potential deposits. Based on features of metallic ores we attempt to delimit their distributions and stretched directions.

     

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