Lithology | Hole depth/m | Thickness/m | Lithological description |
Loess layer + gravel | 13.5 | 13.5 | Loess mixed with sand and gravel |
sandy mudstone | 17.5 | 4 | Gray-yellow, with star-like muscovite, broken core, loose weathered, with iron interlayers |
fine-grained sandstone | 19 | 1.5 | Gray-yellow feldspar quartz sandstone with dark minerals and horizontal bedding |
sandy mudstone | 23.5 | 4.5 | Gray-yellow, with argillaceous inclusions, broken core |
fine-grained sandstone | 37 | 13.5 | Gray-yellow feldspar quartz sandstone with dark minerals and horizontal bedding |
sandy mudstone | 41 | 4 | Gray-yellow, with argillaceous inclusions, broken core |
mudstone | 46.5 | 5.5 | Contains calcite filler |
medium-grained sandstone | 5 0 | 3.5 | Main ingredient Quartz |