Bedrock geologic map of Vermont

Scientific Investigations Map 3184

Prepared in cooperation with the State of Vermont, Vermont Agency of Natural Resources, Vermont Geological Survey
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The Bedrock Geologic Map of Vermont is the result of a cooperative agreement between the U.S. Geological Survey (USGS) and the State of Vermont. The State's complex geology spans 1.4 billion years of Earth's history. The new map comes 50 years after the most recent map of the State by Charles G. Doll and others in 1961 and a full 150 years since the publication of the first geologic map of Vermont by Edward Hitchcock and others in 1861. At a scale of 1:100,000, the map shows an uncommon level of detail for State geologic maps. Mapped rock units are primarily based on lithology, or rock type, to facilitate derivative studies in multiple disciplines. The 1961 map was compiled from 1:62,500-scale or smaller maps. The current map was created to integrate more detailed (1:12,000- to 1:24,000-scale) modern and older (1:62,500-scale) mapping with the theory of plate tectonics to provide a framework for geologic, tectonic, economic, hydrogeologic, and environmental characterization of the bedrock of Vermont. The printed map consists of three oversize sheets (52 x 76 inches). Sheets 1 and 2 show the southern and northern halves of Vermont, respectively, and can be trimmed and joined so that the entire State can be displayed as a single entity. These sheets also include 10 cross sections and a geologic structure map. Sheet 3 on the front consists of descriptions of 486 map units, a correlation of map units, and references cited. Sheet 3 on the back features a list of the 195 sources of geologic map data keyed to an index map of 7.5-minute quadrangles in Vermont, as well as a table identifying ages of rocks dated by uranium-lead zircon geochronology.

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Additional publication details

Publication type:
Publication Subtype:
USGS Numbered Series
Bedrock geologic map of Vermont
Series title:
Scientific Investigations Map
Series number:
Year Published:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
U.S. Geological Survey
3 Sheets; PDF Download of Sheet 1: 77.00 x 54.00 inches; PDF Download of Sheet 2: 77.00 x 54.00 inches; Printable PDF Download of Sheet 3 Front: 77.00 x 54.00 inches; Searchable PDF Download of Sheet 3 Front: 43.84 x 34.63 inches; PDF Download of Sheet 3 Back: 77.00 x 54.00 inches; Downloads Directory
United States
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