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Mineral Resources On-Line Spatial Data

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.
Geology of Maryland
[Legend for lithology colors]
View:
Show in a web browser window:
https://mrdata.usgs.gov/geology/state/map.html
Show in Google Earth or download KML:
List geologic units by state or county
Show in your GIS using OGC WMS:
https://mrdata.usgs.gov/services/md?service=WMS&version=1.1.1&request=GetCapabilities& [Instructions]
Download:
Geological attributes: MDcsv.zip CSV format
Geologic units: MDgeol_dd.zip Shapefile, polygon
Colors for lithology: lith6_2.style ArcMap Style [Instructions]
Metadata:
[Outline] - [Questions & Answers] - [Plain text]
Legend indicating the meaning of colors on the interactive map
Publication:
USGS Open-File Report 2005-1325
Preliminary integrated geologic map databases for the United States : Delaware, Maryland, New York, Pennsylvania, and Virginia
http://pubs.usgs.gov/of/2005/1325/
Methodology:
Detailed report of data standardization procedures
http://pubs.usgs.gov/of/2005/1325/documents/CONUSdocumentation.pdf
GIS style files:
Methods used to create several styles for lithology or geologic time
http://pubs.usgs.gov/of/2005/1314/
Sources:

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

Geologic units in Maryland

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URL: http://mrdata.usgs.gov/geology/state/state.php?state=MD
Page Contact Information: pschweitzer@usgs.gov
Page Last modified: 12:07 on 15-Feb-2017