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Cet album fait partie des albums

↪ Oligocene geology of the United States
↪ Oligocene magmatism of the United States
↪ Oligocene volcanism by country
↪ Oligocene volcanism of North America by country
↪ Paleogene volcanism of the United States
↪ Volcanism of the United States by geochronology

Cet album photos contient les sous-albums suivants :

↪ Oligocene volcanism of the United States by state
↪ Oligocene igneous intrusions in the United States
↪ Oligocene igneous rocks in the United States
↪ Cripple Creek Diatreme
↪ La Garita Caldera
↪ Navajo Volcanic Field
↪ Needles Range Formation
↪ Oligocene calderas in the United States
↪ Oligocene eruption products in the United States
↪ Oligocene pyroclastic rocks in the United States