Category:Rock formations in Washington (state) by type of rock

This meta category should only contain other categories. Files should either be in the relevant subcategory or in the parent category.

Subcategories

This category has the following 18 subcategories, out of 18 total.

*

Columnar igneous rocks in Washington (state)‎ (4 C, 7 F)
Igneous intrusions in Washington (state)‎ (12 C, 2 F)
Lava fields in Washington (state)‎ (2 C, 2 F)

A

Andesite formations in Washington (state)‎ (6 C, 3 F)

B

Basalt formations in Washington (state)‎ (16 C, 3 F)
Basaltic andesite formations in Washington (state)‎ (1 C)

D

Dacite formations in Washington (state)‎ (3 C)
Diorite formations in Washington (state)‎ (3 C, 2 F)

G

Granite formations in Washington (state)‎ (6 C, 20 F)
Granodiorite formations in Washington (state)‎ (1 C, 1 F)

L

Limestone formations in Washington (state)‎ (1 C)

M

Mudstone formations in Washington (state)‎ (1 C)

R

Rhyodacite formations in Washington (state)‎ (1 F)
Rhyolite formations in Washington (state)‎ (3 C)

S

Sandstone formations in Washington (state)‎ (3 C, 8 F)
Shale formations in Washington (state)‎ (2 F)
Siltstone formations in Washington (state)‎ (1 C)

T

Tuff rock formations in Washington (state)‎ (2 C, 2 F)

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