地质学报2017，Vol.91Issue(11)：2493-2520,28.
云南主要双峰式火山岩及相关矿产资源
Major Bimodal Volcanic Rocks and Associated Mineral Resources in Yunnan Province, Southwest China
摘要
Abstract
Bimodal volcanic rocks are widely distributed in Yunnan Province.They occurred throughout the whole process of geological development and evolution in Yunnan Province and the Sangjiang area in southwestern China,forming a variety of special minerals resources.Based on previous research results,this paper summarized the temporal and spatial distribution of bimodal volcanic rocks and associated minerals resources,and discussed the geotectonic setting about the bimodal volcanic rocks in Yunnan.The process of geologic evolution history in Yunnan can be summarized below:(1) Proterozoic:the Mesoproterozoic alkaline volcanic rocks series and spilite-keratophyre association of Dahongshan Group,Hekou Group,Dongchuan Group,Kunyang Group,etc.in central Yunnan,and also the Neoproterozoic bimodal volcanic rocks,which is equivalent to the Suxiong Formation;(2) Meishucunian stage of early Cambrian:basalt and tuff in the western margin of the Yangtze Block;(3) Middle-Late Silurian:spilitequartz keratophyre assemblage of the Da'aozi Formation (S2+3d) in the Dapingzhang copper-polymetallic ore district in Pu'er,western Yunnan;(4) Middle-Late Devonian:clasolite of Linong Formation (D2+ 3l),intercalated with bimodal volcanic rocks and carbonate rocks,in Yangla,Deqin,northwest Yunnan;(5) Early Triassic:Pantiange Formation (T1p) rhyolite and Cuiyibi Formation (T1C) basalt (spilite or altered basalt) in the Jinshajiang orogen,and Eryuan Group bimodal volcanic rocks in western Yunnan;(6) Middle-Late Triassic:Manghuai Formation (T2m) rhyolite,rhyolitic dacite,rhyolitic pyroclastic rock,minor basalt,and Xiaodingxi Formation (T3x) basaltic pyroclastic rock and Manghuihe (T3mh) basalt rhyolitic pyroclastic rock;and (7) Paleogene:Jianchuan Formation (E2j) alkali basalt and potassic volcanic breccia constitute seven episodes of bimodal volcanic rocks,characteristic of various geotectonic settings and related special minerals.These bimodal volcanic rocks can be used as an iconic geological phenomenon of key geological evolution and metallogenic events in Yunnan and the whole Sanjiang area of southwestern China,which is important evidence for studying the geotectonic setting and mineralization.关键词
双峰式火山岩/构造背景/成矿作用/矿产资源/云南Key words
bimodal volcanic rocks/tectonic setting/mineralization/mineral resources/Yunnan Province引用本文复制引用
温利刚,曾普胜,代艳娟,王兆全..云南主要双峰式火山岩及相关矿产资源[J].地质学报,2017,91(11):2493-2520,28.基金项目
本文为中国地质科学院基本科研业务费项目(编号YYWF201619)、国家自然科学基金项目(编号41072073)、国土资源大调查项目(编号12120113002500)和国土资源部公益性行业科研专项(编号201211078)资助的成果. （编号YYWF201619）
