滇东南堆积型铝土矿赋存特征及成矿机制分析  

THE OCCURRENCE AND ANALYSIS OF METALLOGENESIS MECHANISM OF ACCUMULATION BAUXITE DEPOSIT IN SE YUNNAN

作　　者：喻涌麒 李卿 周南 YU Yong-qi;LI Qing;ZHOU Nan(Team 306,Yunnan Bureau of Nonferrous Geology,Kunming 650217)

机构地区：[1]云南省有色地质局三〇六队,云南昆明650217

出　　处：《云南地质》2020年第3期417-421,共5页Yunnan Geology

摘　　要：滇东南地区是云南省重要的铝土矿成矿区,该区堆积型铝土矿是由上二叠统吴家坪组(P3w)或龙潭组(P3l)沉积型铝土矿遭受风化剥蚀,经淋滤、搬运至下二叠统或石炭系碳酸盐岩之岩溶低洼地带富集成矿.通过对比,成矿时代厘定为新近纪中新世至第四纪中更新世.SE Yunnan is an important bauxite metallogenesis area in Yunnan.In this area,the accumula-tion bauxite deposit is Upper P Wujiaping Formatoion(P3w)or Longtan Formation(P3l)sedimentation bauxite which is weathered,disintegrated,leached and migrated to karst depression area of Lower P or C carbonatite,then concentration,deposit and metallogenesis.According to the comparison,we determine the metallogenesis Age:Neogene Miocene to Quarternary Middle Pleistocene.

关 键 词：堆积型铝土矿 矿床特征 成矿机制 滇东南 

分 类 号：P618.45[天文地球—矿床学]