loose sediment
- sandFine rock particles
- gravelLoose small rock fragments
- siltWaterborne earth particles
- clayMoldable earth for ceramics
- dirtLoose dry earth
debris · erosion · deposit · alluvial · drift · particles · muddy · riverbed · sedimentary · shifting · grain · dusty · crumbling · wash · fill · rubble · grit · loam
consolidation/cohesion
loose sedimentbedrock
Solid stone underground
solid rock · firm ground · sedimentary rock · hardpan · packed earth