Dropstones are pieces of rock that are deposited in a marine environment, typically by ice rafting. They are found in the Talchir Formation, which is known for its glacial deposits and dropstone features
| Group I | Group II |
| P. Stylolite | 1. Liquefaction |
| Q. Pseudonodule | 2. Diagenesis |
| R. Current crescent | 3. Organo-sedimentary binding |
| S. Stromatolite | 4. Scouring |