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Mineral Resources > Online Spatial Data > Geology > by state

Iowa geologic map data

[Legend for lithology colors]

View:

Show in a web browser window:

http://mrdata.usgs.gov/sgmc/ia.html

Show in Google Earth or download KML:

• iageol.kml (2.0M bytes)
• iageol.kmz (749k bytes)

Show in your GIS using OGC WMS:

http://mrdata.usgs.gov/services/ia?service=WMS&version=1.1.1&request=GetCapabilities& [Instructions]

or OGC WFS:

http://mrdata.usgs.gov/services/ia?service=WFS&version=1.0.0&request=GetCapabilities& [Instructions]

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

Download:

Geological attributes:	IAcsv.zip	CSV format
Geologic units:	IAgeol_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 2005-1351

Preliminary integrated geologic map databases for the United States: Central states: Montana, Wyoming, Colorado, New Mexico, North Dakota, South Dakota, Nebraska, Kansas, Oklahoma, Texas, Iowa, Missouri, Arkansas, and Louisiana

http://pubs.usgs.gov/of/2005/1351/

Methodology:

Detailed report of data standardization procedures

http://pubs.usgs.gov/of/2005/1351/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:

Hershey H. G. 1969, Geologic Map of Iowa: Iowa Geological Survey, scale 1:500K

Geologic units in Iowa