【摘要】 野外调查和室内分析表明，因民组是康滇地轴上昆阳群中最老的地层，又是昆阳群中铁、铜等矿产的重要含矿层位之一。通过对因民组岩石类型及其特征、沉积构造的研究，将沉积相类型自下而上划分为辩状河、河口湾、滨海相、浅海相及陆棚相、台地相。有助于恢复因民组的原始沉积环境，探讨盆地的基底构造特征及沉积盆地的演化。更多还原

【Abstract】 Field investigation and laboratory analysis show Yinming Formation is the oldest strata and one of the most important Fe,Cu ore horizons in Kunyang Group on Kangdian Earth axis,By the study on the rock type and characteristics,sedimentary structure of Yinming Formation,the types of sedimentary factes are divided ascendingly into braided river,estuary,littoral facies;neritic factes;shelf factes;platform factes,which is helpful to recovering the original sedimentary environment of Yinming Formation and discussing the basement structural characteristics and evolution of sedimentary basin.更多还原