5 layers of silty clay: gray-black, gray-brown, plastic, containing organic rot plants, the thickness of this layer is 2.90-12.00m, the distribution of the site on this layer is discontinuous.
5 layers of powder clay: gray-black, gray-brown, plastic, containing organic rotting plants, the thickness of this layer 2.90-12.00m, the distribution of this layer site is not continuous.
5 layers of silty clay: grayish black, grayish brown, plastic, containing organic rotten plants, the thickness of this layer is 2.90-12.00m, and the distribution of this layer in the site is discontinuous.<br>