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Looking to identify a rock, mineral, or fossil? Please check out our list of tips first.

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Geology

General geology

Bedrock geology

Glacial and Quaternary geology, geomorphology

(see also our Ice Age page)

Geophysics, engineering geology

Minerals and fossils

Minerals

See our Minerals of Wisconsin database

Mineral assessments

(See also our publication)

Fossils

See our Fossils of Wisconsin pages

Water

Groundwater, hydrogeology

Groundwater education, sand-tank model

Groundwater levels

Springs

(See also our Springs page)

Well construction reports

(See also our Well Records page)

Caves and sinkholes

(See also our Karst page)

Mining

Iron mining

(See also our Mining in Wisconsin page)

Frac sand mining

(See also our Mining in Wisconsin page)

Sand, gravel

Data and services

Core and sample library

GIS data/cartography

(See also our Data Sets page)

Well construction reports, geologic logs

(See also our Well Records page)

Geotechnical services

Maps and publications

See our Publications catalog

Publications permissions

Archives