coal measures
C33587
concept
Coal measures are thick, stratified sequences of sedimentary rocks—typically including coal seams, shales, sandstones, and mudstones—formed in ancient swampy environments during specific geological periods.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| coal-bearing sedimentary sequence | 1 |
Instances (3)
| Instance | Via concept surface |
|---|---|
| Illawarra Coal Measures | — |
| Waikato coal measures | coal-bearing sedimentary sequence |
| South Wales Coal Measures | — |