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Maryland geologic map data

A GIS database of geologic units and structural features in Maryland, with lithology, age, data structure, and format written and arranged just like the other states.

View

Show in a web browser window:

Show in Google Earth or other KML viewer:

mdgeol.kml (Uncompressed, 8.2M)

mdgeol.kmz (Compressed, 2.8M)

List geologic units by state or county

Show in your GIS using OGC web services:

https://mrdata.usgs.gov/services/md (WMS, version 1.3.0)

https://mrdata.usgs.gov/services/md (WFS, version 1.1.0)

Use lithology_symbology.lyr ArcGIS layer file to symbolize lithology when using WFS

Download

Content Download Format
Geological attributes MDcsv.zip CSV format
Geologic units MDgeol_dd.zip Shapefile, polygon
Colors for lithology lith6_2.style ArcMap Style [Instructions]

Documentation

Metadata:

Outline - Questions & Answers - Plain text - XML
Legend indicating the meaning of colors on the interactive map

Publication

Sources

Cleaves, E.T., Edwards, J., Jr., Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Baltimore, Maryland, scale 1:250,000.

Related topics

Geologic units in Maryland