Geology is the science and study of the Earth, its composition, structure, physical properties, history, and the processes that shape it.

The State Mineral - The Garnet (Almandine garnet)

The State Fossil - Eubrontes giganteus

Connecticut Geological and Natural History Survey

EarthCache - An EarthCache is a special place that people can visit to learn about a unique geoscience feature or aspect of our Earth. 

Geology of Long Island Sound

Geology of State Parks

• Geology of State Parks
• Glossary of geologic features/terms used in State Park descriptions

GIS Data and Imagery

Radon

• Radon Potential Mapping
• Radon Program - CT Department of Public Health (DPH)

Rock/Mineral Collecting

• Educational Mineral Collecting for Mineral Clubs, Nature Centers, Schools and Connecticut Museums