Lithology | Hole depth/m | Thickness/m | Lithological description |
Loess layer + gravel | 11.5 | 11.5 | Loess mixed with gravel |
sandy mudstone | 22.1 | 10.6 | Gray-yellow, with star-like muscovite, broken core, loose weathered, with iron interlayers |
fine-grained sandstone | 35.5 | 13.4 | Gray-yellow feldspar quartz sandstone with dark minerals and horizontal bedding |
sandy mudstone | 39 | 3.5 | Gray-yellow, with argillaceous inclusions, broken core |
mudstone | 44 | 5.0 | Contains calcite filler |
medium-grained sandstone | 58.9 | 14.9 | Main ingredient Quartz |
sandy mudstone | 60.9 | 2 | grey, medium siltstone |
mudstone | 67.9 | 7.0 | grey or light grey |
fine-grained sandstone | 70.4 | 2.5 | grey with oblique bedding |
mudstone | 77 | 6.6 | dark grey with wavy bedding |