Geodynamic settings and tectonic model of skarn gold deposits in China: An overview
Geodynamic settings and tectonic model of skarn gold deposits in China: An overview
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DOI：
10.1016/j.oregeorev.2005.01.001
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发表时间：
2007-04
影响因子：
3.3
通讯作者：
Yan‐jing Chen;Huayong Chen;K. Zaw;F. Pirajno;Zengjie Zhang
中科院分区：
文献类型：
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作者：
Yan‐jing Chen;Huayong Chen;K. Zaw;F. Pirajno;Zengjie Zhang
中国不同大地构造单元共发现夕卡岩型金矿70个，其中超大型1个，大型19个，中型24个。它们的总储量约为1000吨黄金(中国南部为625吨)，占中国黄金储量的20%。这些夕卡岩矿床位于碰撞造山带、断裂控制的岩浆带和重新激活的克拉通边缘。中国矽卡岩型金矿区均受显生宙碰撞造山作用影响。中国矽卡岩型金矿床成矿事件的时序和时空分布表明，它们是在碰撞造山带地球动力学演化中由缩短向伸展过渡的成矿过程中形成的，而不是与环太平洋斑岩铜矿系统通常主张的俯冲系统有关。
Seventy skarn-type gold deposits, including 1 super-large, 19 large and 24 medium-sized, are known from different geotectonic units of China. They contain a total resource of approximately 1000 t of gold (625 t in South China), and account for 20% of China's gold reserves. These skarn deposits are sited in collisional orogenic belts, fault-controlled magmatic belts and reactivated cratonic margins. All of the Chinese skarn gold provinces were affected by Phanerozoic collisional orogenesis. The timing of the metallogenic events and the spatial–temporal distribution of the Chinese skarn gold deposits indicates that they were formed during ore-forming processes linked to the transition from shortening to extension in the geodynamic evolution of a collision orogen, and not to subduction systems as is commonly advocated for porphyry copper systems around the Pacific Rim.