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Geologic formations by lithology
Andesite formations
Basalt formations
Chert formations
Claystone formations
Coal formations
Conglomerate formations
Dacite formations
Dolomite formations
Granite formations
Ichnofossiliferous formations
Limestone formations
Marl formations
Mudstone formations
Ooliferous formations
Phosphorite formations
Quartzite formations
Rhyolite formations
Sandstone formations
Schist formations
Shale formations
Siltstone formations
Slate formations
Trachyte formations
Tuff formations
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