ISSN 1006-3021 CN11-3474/P
Published bimonthly started in 1979
中甸岛弧带构造格架及斑岩铜矿前景
  
关键词:Zhongdian  island arc belt  tectonic setting  porphyry copper deposit  potential of resources
基金项目:国土资源部资源与环境科技攻关项目(编号:950200102),国土资源大调查项目(编号:2003102000014),国家自然科学基金项目(编号:40272046)和973项目(编号:2002CB412610)
作者单位E-mail
曾普胜 中国地质科学院矿产资源研究所北京100037 zengpusheng@sohu.com 
王海平 中国地质科学院矿产资源研究所北京100037  
莫宣学 中国地质大学北京100083  
喻学惠 中国地质大学北京100083  
李文昌 云南省地质调查院云南昆明650011  
李体刚 武警黄金一总队黑龙江哈尔滨150000  
李红 云南省地质勘查局第三地质大队云南大理671000  
杨朝志 云南省地质勘查局第三地质大队云南大理671000  
摘要点击次数: 10879
全文下载次数: 4664
摘要:
Tectonic Setting and Prospects of Porphyry Copper Deposits in Zhongdian Island Arc Belt
      Located in the south of Yidun island arc of theSanjiang tectonic-magmatic-metallogenic belt, southwestern China, the Zhongdian island arc belt includes two ophiolite-melange belts, i.e., EW-striking Louji ophiolite-melangebelt and Shudu ophiolite-melange belt. The former serves as the boundary between the Zhongdian island arc belt and the Yangtze platform whereas the latter dividesthe Zhongdian island arc belt into the western part and the eastern part. The western part is earlier (250~203 Ma) than the eastern part (218~203 Ma). An analysis of the duration (250~203 Ma) shows that the activity time of the Shudu Ocean,corresponding to Shudu ophiolite-melange belt, should be ca. 250 Ma, close to theactivity time of Garze-Litang suture. The Shudu ophiolite-melange belt and theGarze-Litang ophiolite-melange belt therefore belong to the Emeishan great igneous province. The lithology is characterized by tholeiite in both ophiolite-melange belts. Within the Zhongdian island arc zone, both the eastern porphyry belt and the western porphyry belt are of great potential in search for porphyry copper deposits. The Pulang Porphyry copper deposit is superlarge in size in potential of resources. The Zhongdian porphyry copper deposit is likely to become an important base area in copper-polymetallic resources of China. The exploration work is very promising.
ZENG Pu-sheng,WANG Hai-ping,MO Xuan-xue,YU Xue-hui,LI Wen-chang,LI Ti-gang,LI Hong,YANG Chao-zhi.2004.Tectonic Setting and Prospects of Porphyry Copper Deposits in Zhongdian Island Arc Belt[J].Acta Geoscientica Sinica,25(5):535-540.
查看全文  查看/发表评论  下载PDF阅读器
Copyright©2008 All Rights Reserved
Sponsored by:
Address:: PostCode: Tel: E-mail: