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滇中地区昆阳群下亚群的沉积层序和沉积构型对原生铜矿形成、富集和就位均有重要的控制作用．从时间上讲，昆阳群下亚群分为４个层序．第一层序海侵体系域的因民组中上部火山岩和深水沉积及下伏大红山群为原生铜矿的生矿层，第一层序高水位体系域的落雪组及其上下过渡段为原生铜矿的储矿层，第二层序海侵体系域鹅头厂组的泥质沉积为铜矿的盖层．在空间上，滇中地区中元古代裂谷盆地的结构和沉积构型对铜矿的空间分布也具明显的控制作用．铜矿的就位场所主要位于断隆－断陷区之间的同沉积断裂附近，尤其是靠近断隆区边缘落雪组的高水位体系域进积序列及其相变带．元江地区中元古代的铜矿找矿方向应着重考虑同沉积断裂带与落雪组及上下过渡段相变的复合部位．
The sedimentary sequence and sedimentary configuration of the lower Kunyang Group in central Yunnan have important control over the formation, enrichment and location of primary copper deposits. In terms of time, Kunyang Group sub-group is divided into four sequences. The upper-middle volcanic rocks and deep-water sediments of the Indo-China system in the first-order transgressive system tract and the underlying Dahongshan group are the ore-bearing layers of the primary copper mine. The falling snow group of the first-order high water system tract and its upper and lower transitional segments are The primary copper deposit reservoir, the second order transgressive system domain goose head plant muddy sediments for the copper cover. Spatially, the structure and sedimentary structure of the Mesoproterozoic rift basins in central Yunnan also have obvious control over the spatial distribution of copper deposits. The copper deposit is mainly located in the vicinity of the synsedimentary fault between the fault-broken rift zone, especially the sedimentary sequence and phase transition zone of the high-water system tract near the Loxue Formation at the margin of the fault-break zone. The prospecting direction of the Mesoproterozoic copper deposits in the Yuanjiang area should focus on the composite sites of the same sedimentary fault zone and the Loxue Formation and the upper and lower transitional phase transitions.