Geologic maps

Mineral Resources Online Spatial Data: Interactive maps and downloadable data for regional and global Geology, Geochemistry, Geophysics, and Mineral Resources.

Geologic maps
SGMC geologic units
legend for sgmc2
SGMC contacts
SGMC structures
legend for sgmc2 structure
Alaska geology
Hawaii geology
Geologic contacts
Puerto Rico geology
Geographic reference
OpenStreetMap
Shaded relief
US States
US Counties
County names
USGS map quadrangles
Quadrangle names

Need more? You can View, Download, and Understand this data source at https://MRData.usgs.gov/.

How to use this map

Show data layers

Show available data layers
Layer not shown on map
50 Sliders affect layer transparency.

Find geographic areas

Show named geographic areas
OhioClick linked area names (subdivisions or overlapping areas)
Shows the area on the map

Explore the data

Click the map to show data near to the point you clicked.
A report opens in a new window.
Click the section headings to expand or collapse reports.
To select data from a rectangular area, hold the Ctrl key (use Cmd key on Macs) and drag the pointer.
Don't search a large area this way, it takes too long. Zoom in instead.

Search results

Geographic areas

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