National Geologic Map Database - USGS
2 days ago · U.S. Department of the Interior | U.S. Geological Survey Supported by the National Cooperative Geologic Mapping Program Page Contact Information: Personnel Page Last Modified: …
Geological map - Wikipedia
A geological map or geologic map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or symbols.
Macrostrat
With over 225 maps from data providers around the world across every scale, Macrostrat is the world's largest homogenized geologic map database.
State Geologic Map Compilation
Apr 23, 2025 · This web map portrays the U.S. Geological Survey's State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. The SGMC represents a seamless, spatial …
The National Map - 3D Viewer
Explore the National Map's 3D Viewer for interactive mapping, elevation profiles, and range ring centroids.
Maps | U.S. Geological Survey - USGS.gov
Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation.
Geologic maps help people understand the physical world and its history, develop economic resources, identify and plan for natural hazards, and make land-use decisions.
Preliminary Geologic Maps - California Department of Conservation
Geologic map preparation at the CGS generally follows a three-step process. First, we complete selected 7.5-minute quadrangles at 1:24,000 scale. Then we compile this mapping into 30-by-60 …
What is a Geologic Map?
Geologic maps are uniquely suited to solving problems involving Earth resources, hazards, and environments. Geologic maps represent the distribution of different types of rock and surficial …
The key to understanding the site geology is through interpretive geologic drawings such as geologic maps, cross sections, isopachs, and contour maps of surfaces.