Bones of a marine whale buried beneath rural fields used to aid in the study of geology of the state.

State earthquakes compiled by the National Earthquake Information Center, dating back to the seventeenth century.

K-16 students create an archive of historical and modern photograph pairs documenting 150 years of human interaction with the state landscape.

Simplified geologic map of the state, with descriptions of some major rock types.

Status of soil mapping, SSURGO, links to digital spatial and attribute data, Top20, prime farmland, and hydric soils.