Category:Volcanic rocks in the United States

• Volcanic rocks in the United States by geochronology (17 C)
• Volcanic rocks in the United States by state (41 C)
• Volcanic rocks in the United States by volcano (2 C)
• Volcanoes in the United States by dominant rock type (16 C)

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• Extrusive volcanic rocks in the United States (3 C, 2 F)
• Geologic formations of volcanic origin in the United States (16 C)
• Lava fields in the United States (3 C, 9 F)
• Lava in the United States (14 C, 7 F)
• Volcanic ash in the United States (25 C, 20 F)

A

• Andesite in the United States (22 C, 3 F)

B

• Basalt in the United States (15 C, 3 F)
• Basaltic andesite in the United States (4 C)
• Basaltic trachyandesite in the United States (2 C)

C

• Carbonatite in the United States (2 C)

D

• Dacite in the United States (12 C, 3 F)

F

• Felsite in the United States (2 C)

H

• Hawaiite in the United States (1 F)

L

• Lamproites in the United States (2 C, 4 F)
• Latite in the United States (3 C)

M

• Metavolcanic rocks in the United States (20 C, 5 F)

P

• Phonolite in the United States (4 C, 51 F)
• Phonotephrite in the United States (3 C, 7 F)
• Picrite basalt in the United States (2 C)
• Porphyry in the United States (2 C)

R

• Rhyodacite in the United States (6 C)
• Rhyolite in the United States (23 C, 3 F)

T

• Tephrite in the United States (1 C)
• Trachyandesite in the United States (6 C)
• Trachybasalt in the United States (2 C)
• Trachyte in the United States (10 C, 5 F)

V

• Volcanic breccia in the United States (13 C, 9 F)
• Volcanic rocks as intrusive rocks in the United States (4 C, 3 F)