| Rock Type | Example | Occurrence along Front Range |
| Sedimentary | Red / Pink Sandstone ShaleConglomerateLimestone |
Plains, Plateaus, flanks of mountain areas, Pawnee Buttes |
| Igneous | Extrusive: Basalt | Limited…Table Mountain near Golden, remnants in RMNP |
| Intrusive: Granite/Diorite | Arthurs Rock, Horsetooth Rock., Longs Peak, Pikes Peak | |
| Metamorphic | Quartizite- (from sandstone)Gneiss- (from granite/sandstone)Schist- (from shale or basalt) | Most mountain areas, most canyons |
herbsearth 
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