Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
ripple marks  | |
|---|---|
| BT | sedimentary structures |
| .bedding plane irregularities | |
| ..ripple marks | |
| RT | sand waves |
| primary structures | |
| sand ridges | |
| Bouma sequence | |
| SN | Also index primary structures if applicable (See list K.) |