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Regional Geology

Geology of specific places, states and countries.

Official State Rocks

Twenty-five states honor 17 different rocks as state rocks or state stones

Gallery of the State Rocks

Twenty-five states honor 17 different rocks as official emblems. See them all here.

Official State Minerals

The official state minerals of the United States, listed by state.

Gallery of the State Minerals

Nineteen states have named 17 different official minerals. See them here.

Official State Gems

Thirty-five states have named official gemstones. Here they are, listed by state.

Gallery of the State Gemstones

The 27 official gemstones of 35 states.

Official State Fossils and Dinosaurs

Of the 50 states, 38 have official state fossils or state dinosaurs (or both).

Geologic Maps of the 50 States

The first and still the best such collection on the Web.

Geology of United States Highpoints

Geologist Peter Thompson describes the geology of the highest points of each state.

New York and San Francisco Geology

New York City and San Francisco, and their geologic blessings.

The Rocks of Gibraltar

Photos of the rocks of Gibraltar.

Russian Mineralogy

Maurice Strahlen has embarked on a labor of love to publicize the mines and minerals of the Russian nation.

Scottish Geology

A deep and friendly resource on what may be the world's most geological country.

Explore Geology

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