Category: geology (67 terms)
- air hole
- algal mat
- amber tree
- artesian well
- bedded in
- black coal
- black mud
- black sand
- black smoker
- block model
- block system
- blue ice
- chatter mark
- country rock
- crop out
- desert rock
- desert sand
- fault line
- focal depth
- fool's gold
- fossil record
- frost line
- hanging wall