Stratum | Thickness (m) | Average thickness (m) | Characteristics description |
---|---|---|---|
① Miscellaneous fill | 2.00~4.50 | 2.97 | Variegated in color, and with loose structure. |
② Silty clay | 0.70~3.40 | 1.87 | Brownish yellow in color, and in soft-plastic state. |
③ Fill | 4.60~7.20 | 5.73 | Grey in color, and in soft-plastic state. |
④ Clay | 0.70~3.00 | 1.65 | Yellow in color, and in hard-plastic state. |
⑤ Clay with lime concretion | 1.90~3.20 | 2.74 | Brownish yellow in color, and in-hard plastic state. Particle size of lime concretion is 0.50~5.00 cm. |
⑤-1 Clay | 4.20~7.30 | 5.39 | Brownish yellow in color, and in-hard plastic state. |
⑥ Sandstone | 4.60~7.20 | 6.16 | Purple in color, and strongly weathered. |
⑥-11 Limestone | 4.00~7.10 | 5.00 | Grey in color, and slightly weathered. |