点苍山—哀牢山带基础地质问题思考

点苍山—哀牢山是滇西重要的变质带。点苍山-罗平山断裂将点苍山分为两个结合带：东部甘孜-理塘结合带东以洱海—箐河断裂为界，包括石鼓蛇绿混杂岩带、义敦岛弧带和中咱-中甸地块。西部金沙江结合带西以乔后-西洱河断裂为界，包括古元古界沟头箐岩群结晶基底、河底-李子坪蛇绿混杂岩带及维西陆缘弧带。哀牢山东侧红河断裂是上扬子地块与金沙江接合带的分界，哀牢山断裂是一条逆冲推覆断裂，不是金沙江结合带的东界。

THE CONSIDERATION ON BASEMENT GEOLOGICAL PROBLEMS OF DIANCANGSHAN-AILAOSHAN ZONE

The Dianeangsh Diancangshan is divided into 2 an-Ailaoshan zone is an conjunction zones by the important metamorphic zone in West Yunnan. And the Diancangshan-Luopingshan fault zone. The east one, Ganzi-Litang conjunction zone, which has E boundary of Erhai-Qinghe fault, consists of the Shigu ophiolite melange zone, Yidun island arc zone and Zhongzan-Zhongdian massif. The west one, Jinshajiang fiver conjunction zone, with W boundary of Qiaohou-Xierhe fault, consists of Palaeoproterozoic Goutouqing petrographic group crystalline basement, Hedi-Liziping ophiolite melange zone and Weixi epicontinental arc zone. The Honghe fault on the E side of Ailaoshan is the boundary between upper Yangzi massif and Jinshajiang fiver conjunction zone. The Ailaoshan fault is a thrusted nappe fault, it is not the E boundary of Jinshajiang river conjunction zone.