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USGS is a primary source of geographic information system (GIS) data. Our data and information is presented in spatial and geographic formats, including The National Map, Earth Explorer, GloVIS, LandsatLook, and much more. Explore GIS Data Maps.

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September 21, 2005

Quaternary Geologic Map of Connecticut and Long Island Sound Basin Quaternary Geologic Map of Connecticut and Long Island Sound Basin

The Quaternary geologic map (sheet 1) and explanatory figures and cross sections (sheet 2) portray the geologic features formed in Connecticut during the Quaternary Period, which includes the Pleistocene (glacial) and Holocene (postglacial) Epochs. The Quaternary Period has been a time of development of many details of the landscape and of all the surficial deposits. At least twice in...

USGS Science in Long Island Sound and its Watershed

August 4, 2005

Geologic evidence for late quaternary movement on the Clan Alpine Fault, west-central Nevada — Trench logs, scarp profiles, location maps, and sample and soil descriptions Geologic evidence for late quaternary movement on the Clan Alpine Fault, west-central Nevada — Trench logs, scarp profiles, location maps, and sample and soil descriptions

No abstract available.

Geosciences and Environmental Change Science Center

August 1, 2005

Geologic map of the Amboy Quadrangle, Clark and Cowlitz counties, Washington Geologic map of the Amboy Quadrangle, Clark and Cowlitz counties, Washington

No abstract available.

July 22, 2005

Principal areas of oil, natural gas, and coal production in the northern part of the Front Range, Colorado Principal areas of oil, natural gas, and coal production in the northern part of the Front Range, Colorado

No abstract available.

June 11, 2005

Geologic and geophysical maps of the Las Vegas 30' x 60' quadrangle, Clark and Nye counties, Nevada, and Inyo County, California Geologic and geophysical maps of the Las Vegas 30' x 60' quadrangle, Clark and Nye counties, Nevada, and Inyo County, California

Las Vegas and Pahrump are two of the fastest growing cities in the US, and the shortage of water looms as among the greatest future problems for these cities. These new maps of the Las Vegas 30 x 60-minute quadrangle provide a geologic and geophysical framework and fundamental earth science database needed to address societal issues such as ground water supply and contamination, surface...

Geosciences and Environmental Change Science Center

June 3, 2005

Geologic map of the Canyon Ferry Dam 30' x 60' quadrangle, west-central Montana Geologic map of the Canyon Ferry Dam 30' x 60' quadrangle, west-central Montana

No abstract available.