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Cambrian - Ignacio quartzite (1) |
Carboniferous - Cutler formation; Rico formation; Hermosa formation; Ouray limestone (1) |
Cretaceous - Mancos shale; Dakota sandstone (1) |
Devonian - Ouray limestone (1) |
Geology -- Colorado -- Dolores County -- Maps (1) |
Geology -- Colorado -- La Plata County -- Maps (1) |
Geology -- Colorado -- Montezuma County -- Maps (1) |
Geology -- United States --Maps (1) |
Jurassic - Mc. Elmo formation; La Plata sandstone (1) |
Neogene - Calcareous tufa; Calico Peak porphyry (1) |