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Relationship Between Porphyry Deposits and Strike Slip Faults and Its Implications to Exploration in Southwestern China

QIN Jian-hua,DING Jun,LIU Cai-ze,ZHANG Qi-ming(Chengdu Center,China Geological Survey,Chengdu 610082)  
Southwestern China is a vital area for exploration and exploitation of porphyry deposits.Since the 1960s,a lot of large-scale porphyry deposits have been found in this region,such as the Yulong,Qulong,Pulang,and Duobuza porphyry copper deposits.Our preliminary study indicates that the occurrence of the porphyry deposits has a close spatial relationship with the regional-scale strike slip faults.The recognition and detailed study of this relationship has great significance for the exploration of the porphyry deposits in this area.In the further surveys in the existing five porphyry deposit belts,investigations should be conducted along the strike-slip fault zones,as well as in the areas with secondary local extension and compression within or surrounding the faults.Besides,more attention should be focused on the surveys along the Xianshuihe-Xiaojiang left-slip fault and its either side to search for porphyry deposits.
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