含有泥质的碳酸盐胶体沉淀形成的灰岩，由于岩性不同引起差异溶蚀，较难被溶蚀的泥质呈条带状凸现在岩石表面，故称“泥质条带灰岩”。The limestone was formed by sedimentation of mud-containing carbonate colloid. Different lithological characters caused differential weathering, and the mud bands that are more difficult to erode protrude from the rock surface, so the rock is called mud-banded limestone.