滇中元江东昆阳群因民组—落雪组的厘定及其意义  

THE ASCERTAINMENT OF YINMIN FORMATION-LUOXUE FORMATION OF KUNYANG GROUP IN THE NORTHEAST YUANJIANG AND ITS SIGNIFICANCE

作　　者：曹德斌 

机构地区：[1]云南地勘局区域地质调查所,玉溪653100

出　　处：《云南地质》1999年第2期196-200,共5页Yunnan Geology

摘　　要：元江县北东地区地质构造十分复杂， 岩石组合多样， 不同地质体均以断块的形式出现。通过近年１∶５ 万区调工作， 对元江县北东所出露地层的岩石组合、矿物成分、结构构造、叠层石、含矿性及岩相的研究后， 在青扬断裂的南东， 以往资料划分为昆阳群大龙口组中， 分解、厘定出了呈北西向延伸长达２２ｋｍ 的昆阳群因民组和落雪组。In the northeast area of Yuanjiang County, Yunnan Province, the tectonics is very complex, characterized by various rock associations and different geological bodies ocurred in the form of faulted block. In the 1∶50000 regional geological survey recent years, by a study on the rock association, mineral composition, texture structure, stromatolites, ore potentialities and lithofacies of the strata in Northeast Yuanjiang, some strata of the past Dalongkou formation of Kunyang Group southeast of the Qingyang fault have been divided into Yinmin Formation and Luoxue Formation of Kunyang Group, extending in NW and 22 km long.

关 键 词：元江 昆明群 厘定 地层对比 因民组 落雪组 

分 类 号：P534[天文地球—古生物学与地层学]