Geochemical characteristics of stream sediments and ore-prospecting orientation in Daba Mountain area
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Supported by China Geological Survey Program (No. 1212010981042, No. 12120113068000).

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    Abstract:

    The Daba Mountain passes through two tectonic units, namely, the Qingling orogenic belt and the Yangtz craton. Based on the 1:50000 stream sediment survey, the authors calculated the geochemical parameters of ore-forming elements and analyzed the distribution characteristics, element correlation and element anomaly assemblages. The results show that the study area might be a potential area for Pb, Zn, Ba, Cu and Mn deposits. It is concluded that the main metallogenic types in Qinling unit of the study area are low temperature epithermal Zn-Cu deposits and sedimentary type Ba deposits connected with the Silian-lower Cambrian black rocks. The main metallogenic types in Yangtze unit of the study area are low temperature epithermal Pb-Zn deposit related to the Cambrian carbonaceous rocks and sedimentary type Mn deposits which are connected with Cambrian and Silian carbonaceous rocks respectively. On such a basis, five prospective areas were delineated. Yangjiaping-Gedong area and Zhenping area are expected to be promising areas for Ba-Zn deposits, Huang'anba-Mihunzhen area for Zn-Cu deposits, Baiyangping area for Pb-Zn deposits and Xiuqi-Shifang area for Mn deposits.

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LIU Jin-song, ZOU Xian-wu, TANG Chao-yang, CUI Sen, XIA Jie, ZHAOWu-qiang, JIN Shi-chao, GONG Yin-jie. Geochemical characteristics of stream sediments and ore-prospecting orientation in Daba Mountain area[J]. Geology in China, 2016, 43(1): 249-260(in Chinese with English abstract).

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History
  • Received:November 28,2014
  • Revised:February 24,2015
  • Adopted:
  • Online: January 27,2016
  • Published: