Wikimedi'Òc

Heterolithic volcanic breccia (Cripple Creek Diatreme, Early Oligocene, ~32 Ma; Squaw Gulch roadcut, Cripple Creek Mining District, Colorado, USA) 1.jpg - Ser Amantio di Nicolao

Heterolithic volcanic breccia (Cripple Creek Diatreme, Early Oligocene, ~32 Ma; Squaw Gulch roadcut, Cripple Creek Mining District, Colorado, USA) 2.jpg - Ser Amantio di Nicolao

Heterolithic volcanic breccia (Cripple Creek Diatreme, Early Oligocene, ~32 Ma; Squaw Gulch roadcut, Cripple Creek Mining District, Colorado, USA) 3.jpg - Ser Amantio di Nicolao

Heterolithic volcanic breccia (Cripple Creek Diatreme, Early Oligocene, ~32 Ma; Squaw Gulch roadcut, Cripple Creek Mining District, Colorado, USA) 4.jpg - Ser Amantio di Nicolao

Heterolithic volcanic breccia (Cripple Creek Diatreme, Early Oligocene, ~32 Ma; Squaw Gulch roadcut, Cripple Creek Mining District, Colorado, USA) 5.jpg - Ser Amantio di Nicolao