coal beds
Underground fuel layers
Coal beds are geological layers where coal has accumulated, formed from ancient plant matter compressed over millions of years.
Mining operations extract coal from these deposits, which vary in thickness from inches to hundreds of feet.
The term appears in geological surveys and energy discussions: The region's coal beds have been mined since the 1800s.
- coalbed methaneNatural gas from coal deposits
- anthraciteHighest-grade coal variety
- bituminousContaining natural tar
- strataParallel geological layers
- peatWaterlogged decomposed vegetation
lignite · rocks · deposits · shaft · black lung · sedimentary layers · paleobotany · seam · carbonization · mineralogy · layers · carbonaceous · geology · geological surveys · underground mining · mine shaft · black diamond · Appalachia
- fossil sourcestar pits, amber, shale, limestone, sandstone
- US GeologyAppalachians, Rocky Mountains, Rockies, Grand Canyon, San Andreas Fault
- Early Jurassicichthyosaurs, ammonites, Dilophosaurus, marine fossils, early mammals
- geologyfault lines, faults, rock, basalt, metamorphic rocks
- geologic historyCambrian, Ordovician, Silurian, Devonian, Carboniferous
coal bedsoil fields
Areas yielding crude petroleum
natural gas reserves · uranium deposits · solar energy · wind power · renewable energy sources
coal, bed, coals, beds, coaling, coalfield, coalfields, coalmine, coalminer