Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
coal balls  | |
|---|---|
| UF | balls, coal |
| RT | coal |
| coal seams | |
| concretions | |
| coal basins | |
|---|---|
| SN | As of 1981, no longer a valid term for GeoRef. See coal, coal mines, and coal fields. |
| coal beds | |
|---|---|
| USE | coal seams |
| coal clay | |
|---|---|
| USE | underclay |
| Coal County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Coal County Oklahoma | |
| SN | S central Oklahoma. |
| coal deposit maps | |
|---|---|
| BT | maps |
| .coal deposit maps | |
| RT | coal |
| economic geology maps | |
| SN | Before 1982, search coal AND maps. Added to Thesaurus in 1982. |
| coal exploration | |
|---|---|
| RT | coal |
| discoveries | |
| exploration | |
| peat | |
| SN | Before 1993, also search coal AND exploration. Added to Thesaurus in 1993. |
| Coal Measures | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Upper Carboniferous | |
| .....Coal Measures | |
| SN | As of 1981, no longer a valid term for GeoRef. See coal. |
| coal mines | |
|---|---|
| BT | mines |
| .coal mines | |
| RT | mining geology |
| coal fields | |
| economic geology | |
| coal | |
| strip mining | |
| longwall mining | |
| SN | Before 1993, also search coal AND (mines or mining geology). Added to Thesaurus in 1993. |
| coal quality | |
|---|---|
| SN | Not a valid term for GeoRef. As of 1998, see rank and composition. |
| coal seams | |
|---|---|
| UF | coal beds |
| seams, coal | |
| RT | coal |
| coalbed methane | |
| cleats | |
| coal balls | |
| degasification | |
| underclay | |
| SN | Also search coal deposits. |
| coalbed methane | |
|---|---|
| BT | petroleum |
| .natural gas | |
| ..coalbed methane | |
| RT | coal |
| energy sources | |
| Cedar Hill Field | |
| cleats | |
| coal seams | |
| methane | |
| SN | Before 1993, also search natural gas and coal. Commodity term. See List C. |
| coalfields | |
|---|---|
| USE | coal fields |
| coalification | |
|---|---|
| UF | carbonification |
| carbonitization | |
| carbonization | |
| incarbonization | |
| incoalation | |
| RT | processes |
| carbonatization | |
| diagenesis | |
| coal | |
| Coalinga California | |
|---|---|
| BT | United States |
| .California | |
| ..Fresno County California | |
| ...Coalinga California | |
| RT | Coalinga earthquake 1983 |
| SN | City in S central California. |
| Coalinga earthquake 1983 | |
|---|---|
| BT | earthquakes |
| .Coalinga earthquake 1983 | |
| RT | California |
| Coalinga California | |
| SN | Epicenter near Coalinga, S central California. Added to Thesaurus in 1985. |
| Coalsack Bluff | |
|---|---|
| BT | Antarctica |
| .Coalsack Bluff | |
| RT | Queen Maud Land |
| Ross Dependency | |
| Ross Ice Shelf | |
| Beardmore Glacier | |
| SN | Site of paleontological investigations in Beardmore Glacier area around NW end of Queen Maud Range off the Ross Ice Shelf in Ross Dependency. |