Mesozoic Large‐scale Mineralization and Multiple Lithospheric Extensions in South China
Mesozoic Large‐scale Mineralization and Multiple Lithospheric Extensions in South China
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DOI：
10.1111/j.1755-6724.2006.tb00259.x
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发表时间：
2006-06
期刊：
影响因子：
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通讯作者：
Jingwen Mao;Guiqing Xie;Xiaofeng Li;Changqing Zhang;Yitian Wang
中科院分区：
文献类型：
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作者：
Jingwen Mao;Guiqing Xie;Xiaofeng Li;Changqing Zhang;Yitian Wang
中国南部是中国最重要的多金属(钨、锡、铋、铜、银、锑、汞、稀有金属、重稀土、金、铅锌)省。本文论述了中国南部中生代大型成矿作用的基本特征。大型成矿作用主要发生在170~150 Ma、140~126 Ma和110~80 Ma三个时期。其中，第一阶段以铜、铅锌、钨成矿为主，第三阶段以锡、金、银、铀矿化为主要特征。140~126 Ma为第一阶段向第三阶段过渡阶段，以钨、锡矿化为主要特征。根据目前区域构造演化的研究成果，认为三期大规模成矿与南中国地块与北中国地块的后碰撞、构造体制的主应力场由N-S向E-W方向的转移以及古太平洋板块俯冲引起的多次弧后岩石圈伸展有关。
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.