| Mesozoic Large-scale Mineralization and Multiple Lithospheric Extensions in South China |
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| 作者姓名： | MAO Jingwen XIE Guiqing LI Xiaofeng ZHANG Changqing WANG Yitian |
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| 作者单位： | [1]Institute of Mineral Resources, Chinese Academy of Geologicai Sciences, Beijing 100037 [2]School of Earth Science and Resources, China University of Geosciences, Beijing 100083 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | South China is the most important polymetallic （tungsten, tin, bismuth, copper, silver, antimony, mercury, rare metals, heavy rare earth elements, gold and lead-zinc） province in China. This paper describes the basic characteristics of Mesozoic large-scale mineralization in South China. The large-scale mineralization mainly took place in three intervals： 170-150 Ma, 140-126 Ma and 110-80 Ma. Among these the first stage is mainly marked by copper, lead-zinc and tungsten mineralization and the third stage is mainly characterized by tin, gold, silver and uranium mineralization. The stage of 140-126 Ma mainly characterized by tungsten and tin mineralization is a transitional interval from the first to the third stage. In fight of the current research results of the regional tectonic evolution it is proposed that the large-scale mineralization in the three stages is related to post-collision between the South China block and the North China block, transfer of the principal stress-field of tectonic regimes from N-S to E-W direction, and multiple back-arc lithospheric extensions caused by subduction of the Paleo-Pacific plate.
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| 关 键 词： | 矿化作用 沉积物 中生代 中国 |
| 收稿时间： | 2005-06-21 |
| 修稿时间： | 2006-01-16 |
Mesozoic Large-scale Mineralization and Multiple Lithospheric Extensions in South China |
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| Authors: | MAO;Jingwen;XIE;Guiqing;LI;Xiaofeng;ZHANG;Changqing;WANG;Yitian |
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| Abstract: | South China is the most important polymetallic (tungsten, tin, bismuth, copper, silver, antimony, mercury, rare metals, heavy rare earth elements, gold and lead-zinc) province in China. This paper describes the basic characteristics of Mesozoic large-scale mineralization in South China. The large-scale mineralization mainly took place in three intervals: 170-150 Ma, 140-126 Ma and 110-80 Ma. Among these the first stage is mainly marked by copper, lead-zinc and tungsten mineralization and the third stage is mainly characterized by tin, gold, silver and uranium mineralization. The stage of 140-126 Ma mainly characterized by tungsten and tin mineralization is a transitional interval from the first to the third stage. In light of the current research results of the regional tectonic evolution it is proposed that the large-scale mineralization in the three stages is related to post-collision between the South China block and the North China block, transfer of the principal stress-field of tectonic regimes from N-S to E-W direction, and multiple back-arc lithospheric extensions caused by subduction of the Paleo-Pacific plate. |
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| Keywords: | mineralization polymetallic deposit Mesozoic extension South China |
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