S
Agathla PeakW
Agathla Peak
Agua de la Piedra FormationW
Agua de la Piedra Formation
A
Ancud Volcanic ComplexW
Ancud Volcanic Complex
Canadian Cascade ArcW
Canadian Cascade Arc
B
Ethiopian HighlandsW
Ethiopian Highlands
Fish Canyon TuffW
Fish Canyon Tuff
C
La Garita CalderaW
La Garita Caldera
Lizard HeadW
Lizard Head
D
Nazca RidgeW
Nazca Ridge
Pemberton Volcanic BeltW
Pemberton Volcanic Belt
E
Pilot Rock (Oregon)W
Pilot Rock (Oregon)
San Juan volcanic fieldW
San Juan volcanic field
F
ShiprockW
Shiprock
Wheeler Geologic AreaW
Wheeler Geologic Area