The Cooperative National Geologic Map

Summary

Customize your experience by adjusting layer visibility and application theme modes. We're always interested in hearing how we can improve the application and better deliver our data to you. Watch for more customization options in future updates and contact us if you'd like to see additional features. Layer Visibility (note some themes don't contain all layer types) Contacts and Faults Layer (includes contacts, faults, etc.) Geologic Lines Layer (includes non-topological linear features) Map Unit Lines Layer (map units too narrow to draw as polygons)