摘要
三江中南段地区地质构造演化复杂,古特提斯演化过程和陆内汇聚造山过程均伴随大规模的成矿作用,但是其涉及的空间范围不同,统一进行成矿带划分不能清晰地反映区域成矿规律。本次工作按前寒武纪、古特提斯阶段和陆内造山阶段进行了成矿带划分,提出了新的划分方案。系统提出了经过三江中南段地区至东南亚的5条展布千余千米长的大型成矿带:大理-哀牢山Cu、Ni、PGE成矿带,兰坪-思茅盆地铅锌、银铜钴、汞锑多金属成矿带,金沙江-哀牢山铜金矿带,东南亚锡矿带西带和中带。在此基础上探讨了成矿带中存在的若干地质问题。
The geologic and tectonic evolution of the central and southern sections of the Three Rivers region is very complicated. The evolution of Paleo-Tethys and intracontinental convergent orogeny are accompanied by large-scale mineralization, and they differ greatly in terms of spatial scale. Therefore, the uniform classification of metallogenic belts could not reflect the regional mineralization rule of this area. This study divides the metallogenic belts based on Precambrian, Paleo-Tethys and intracontinental orogenic stages and proposes a new scheme for classification. Five large-scale metallogenic belts extending from the central section of Three Rivers region to Southeast Asia with a total length of more than a few hundred kilometers, are the Dali-Ailaoshan Cu Ni-PGE metallogenic belt, Pb-Zn, Ag-Cu-Co, or Hg-Sb polymetallic metallogenic belts of Lanping-Simao basin, Jinshajiang-Ailaoshan Cu-Au metallogenic belt, the western and middle Sn metallogenic belts of Southeast Asia. In addition, a lot of geological problems about metallogenic belts are also discussed.
出处
《地质学报》
EI
CAS
CSCD
北大核心
2009年第10期1365-1375,共11页
Acta Geologica Sinica
基金
国家科技攻关计划课题(编号2001BA609A-05,2003BA612A-05)
国家“973”项目(编号2002CB412607)
国家科技支撑计划课题(编号2006BAB01A07,2006BAB01B05)
地质调查项目(编号121201066307)
中央级公益性科研院所基本科研业务费专项资金(编号K2007-1-1)资助的成果
关键词
西南三江
成矿带
成矿规律
古特提斯
造山带
Three Rivers region
metallogenic belts
paleo-Tethys
continental orogeny
