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通过对平坝一带区域地质的调查，认为这套白垩系砾岩、紫红色泥岩为山麓—河湖相沉积，是燕山期构造控制的山前盆地沉积。在紫红色泥岩中首次发现介形类Ｔａｌｉｃｙｐｒｉｄｅａｓｐ．、Ｔ．ｌａ－ｔｉｏｖａｔａ、Ｃｙｐｒｉｓｓｐ．，证明其属上白垩统扎佐组，而不是侏罗系。根据沉积学研究将其划分为４种沉积类型，并圈定了各类型空间展布。砾岩，砂岩属碎屑流沉积产物，而紫红色泥岩为湖相沉积，两者在很大程度上属同时异相沉积。
Based on the investigation of the regional geology in Pingba area, it is concluded that the Cretaceous conglomerate and purplish red mudstone are foothills - lacustrine facies sediments, and are the foreland basin sediments controlled by Yanshanian structure. For the first time in the magenta mudstone, the protagonist Talicyprideasp was found. , T la-tiovata, Cyprissp. , Proving that it belonged to the Cretaceous Zazu Formation instead of the Jurassic. According to sedimentology research, it is divided into four sedimentary types, and the various types of spatial distribution are delineated. Conglomerates and sandstones are clastic sedimentary products, while mauve mudstone is lacustrine sediments, both of which belong to a large extent belong to the same phase of heterogeneous deposition.