Basic Classification - Method of Origin
Clastic
Breccia
Conglomerate
Sandstone
Shale
Siltstone
Chemical
Chert
Dolomite
Gypsum
Halite (rock salt)
Limestone - micrite
Limestone - oolitic
Limestone - intraclastic
Rock Salt (halite)
Biochemical
Chalk
Coal - bituminous
Coal - anthracite
Coquina
Limestone - chalk
Limestone - fossiliferous
Peat

QFL Classification
Arkose breccia
Arkose conglomerate
Arkose sandstone
Lithic conglomerate
Lithic sandstone
Lithic breccia
Quartz sandstone
Quartz conglomerate
Sandy quartz conglomerate
Sandy wacke
Shale
Siltstone
Wacke sandstone
Wacke quartz conglomerate

Carbonate Classification

Carbonates come in such variety and diversity that only the main types are listed here. Mixed types are forced into one category or another. Also, some rock types are much more common than others and thus some rocks listed below are not represented. We have also mixed rock names from different keys although they may refer to the same thing.


Biomicrite
Biosparite
Chalk
Coquina
Dolomite
Encrinite
Fossil limestone
Intramicrite
Intrasparite
Micrite
Oomicrite
Oosparite
Pelmicrite
Pelsparite

Back to HOME