云南个旧老厂矿田东部大比例尺构造地球化学特征及找矿预测

黄大正, 陈守余, 赵江南, 吴帅吉, 张毓策

Large scale tectonic geochemical characteristics and prospecting prediction in eastern Laochang orefield, Gejiu, Yunnan Province

HUANG Da-Zheng, CHEN Shou-Yu, ZHAO Jiang-Nan, WU Shuai-Ji, ZHANG Yu-Ce

图1 云南个旧地区大地构造位置(a)及矿区地质简图(b)(据毛景文等[25]修改) 1—第四系;2—火把冲组板岩、砂岩、砂砾岩;3—法郎组砂岩、页岩夹凝灰岩和玄武质熔岩;4—法郎组玄武质熔岩;5—个旧组碳酸盐岩;6—下三叠统紫红色砂岩夹绿色砂岩、泥灰岩;7—哀牢山变质带;8—辉长岩;9—霞石正岩;10—碱长花岗岩;11—碱性花岗岩;12—斑状黑云母花岗岩;13—等粒黑云母花岗岩;14—断裂;15—向斜;16—背斜

Fig.1 Geotectonic location(a) and geological sketch(b) of mining area in Gejiu area, Yunnan province(according to Mao J W,et al [25] modified) 1—Quaternary; 2—slate, sandstone, glutenite of the Huobachong formation; 3—sandstone, shale intercalated with tuff and basaltic lava of the Falang formation; 4—basaltic lava of the Falang formation ; 5—carbonate rock of the Gejiu formation ; 6—purple-red sandstone with green sandstone and marl of lower Triassic ; 7—Ailaoshan metamorphic belt; 8—gabbro; 9—nepheline syenite; 10—alkali-feldspar granite; 11—alkaline granite; 12—porphyritic biotite granite; 13—equigranular biotite granite; 14—fault; 15—syncline; 16—anticline