四川西南早寒武世磷矿是扬子成磷区川滇成矿带的主要组成部分,是四川境内重要的成接触带则有冷凝边,证明层状岩体是随裂谷构造拉张而发生的岩浆活动“热侵位”的产物。磷地区和含磷层位。本区在构造上划归川滇黔鄂台坳或称“康滇地轴”轴缘坳陷。含磷地层包括麦地坪组及筇竹寺组中、下段(前三叶虫段)。二者统称为梅树村阶。这套地层以其特殊的含磷性,小壳化石的初次和大量出现。独具一格的沉积相型。与上下地层相 The early Cambrian phosphorite in the southwestern Sichuan is the main component of the Sichuan-Yunnan metallogenic belt in the phosphorous forming area of ​​the Yangtze River. It is an important contact zone in Sichuan Province where there is a condensation side. It is proved that the layered rock mass is the magma that occurs along with the rift tectonic extension Activity “hot invasion bit ” product. Phosphorus area and phosphorus layer. The area is structurally classified as Sichuan, Yunnan, Guizhou and Taiwan E’ao or “Kang Dian axis” axis depression. The phosphorus-bearing strata include the middle and lower parts of the Mai-Di-Ping Formation and Qiongzhusi Formation (the former trilobite segment). Both collectively referred to as plum tree village. The formation of its special phosphorus-containing, small shell fossils of the first and large numbers appear. Unique sedimentary facies. And the upper and lower strata