East-west section across South Dakota to show the Dakota artesian system. The Dakota sandstone is composed for the most part of well-rounded and well-assorted quartz grains, representing an ancient river and wind-formed sand deposit.

Dakota Artesian System

East-west section across South Dakota to show the Dakota artesian system. The Dakota sandstone is composed…

The state banner of South Dakota, the coyote state.

South Dakota

The state banner of South Dakota, the coyote state.

Seal of the state of South Dakota, 1904

South Dakota seal

Seal of the state of South Dakota, 1904

Seal of the state of South Dakota, 1913

South Dakota seal

Seal of the state of South Dakota, 1913

Seal of the state of South Dakota, 1913

South Dakota seal

Seal of the state of South Dakota, 1913