Category:Intrusions (geology) in Colorado by geochronology
States of the United States: Arizona · Colorado · Idaho · Maine · Montana · Nevada · New Mexico · Pennsylvania · Utah · Vermont · Washington · Wyoming
| Preceded by Proterozoic Eon | Phanerozoic Eon | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Paleozoic Era | Mesozoic Era | Cenozoic Era | ||||||||||
| Cambrian | Ordovician | Silurian | Devonian | Carboniferous | Permian | Triassic | Jurassic | Cretaceous | Paleogene | Neogene | 4ry | |
Subcategories
This category has the following 10 subcategories, out of 10 total.