State Geologic Maps
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Summary
Geologic map compilations of individual States; scales range from 1:125,000 to 1:2,500,000.
Extent of Program
State by State
Available Product Coverage
Maps published by the United States Geological Survey (USGS) are available for the following States (year of publication in parentheses): Alaska (1980); Arizona (1969); Arkansas (1976, reprinted 1992); Colorado (1979); Idaho (1947, reprinted 1959); Kentucky (1981); Massachusetts (1983); Montana (1955); Nevada (1978);
New Hampshire (1955); New Mexico (1965);North Dakota (1980); Oklahoma (1954, reprinted 1991); Oregon (1992); South Dakota (1951); Wyoming (1985). Contact State agencies for geologic maps of other States.
Information Content
State geologic maps show the general distribution of rocks and sediments exposed at the surface throughout the entire State. Major faults are also shown. Map units are described in terms of lithology and geologic age in an accompanying explanation. The production of most State maps published by the USGS is done in cooperation with the States.
Product Delivery Format
Paper
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