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Maps

Fundamental Science Practices

USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.

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Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. They also organize, maintain, and publish the geospatial baseline of the Nation's topography, natural landscape, built environment and more.

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Filter Total Items: 9495

Map showing thickness of material overlying principal clay unit, Hartford South Quadrangle, Connecticut

This map shows the distribution and thickness of material overlying the principal clay unit.  The clay unit consists of a thick, massive bed of relatively pure clay in some areas; in other areas it consists of discrete layers of clay alternating with layers of silt and very fine sand (varved clay).  The material overlying the principal clay unit commonly consists of sand.  In places this sand is o

Map showing thickness of principal clay unit, Glastonbury Quadrangle, Connecticut

No abstract available.

Map showing thickness of principal clay unit, Hartford South Quadrangle, Connecticut

This map show the distribution and thickness of the principal clay unit.  The clay unit consists of a thick, massive bed of relatively pure clay in some areas; in other areas it consists of discrete layers of clay alternating with layers of silt and very fine sand (varved clay).  The upper layers of the clay unit commonly grade into a layer of silt and very fine sand.  Small, isolated clay deposit

Map showing thickness of principal clay unit, Windsor Locks Quadrangle, Connecticut

No abstract available.

Map showing unconsolidated materials, Branford quadrangle, Connecticut

No abstract available.

Map showing unconsolidated materials, Essex quadrangle, Connecticut

No abstract available.

Map showing unconsolidated materials, Ludlow quadrangle, Massachusetts

No abstract available.

Map showing unconsolidated materials, Montville Quadrangle, Connecticut

No abstract available.

Map showing unconsolidated materials, Niantic quadrangle, Connecticut

No abstract available.

Map showing unconsolidated materials, Northfield quadrangle, Massachusetts-New Hampshire-Vermont

No abstract available.

Map showing unconsolidated materials, Southwick quadrangle, Massachusetts-Connecticut

This map is intended to serve as an aid in reconnaissance evaluation of unconsolidated materials and can be used to identify areas of potential interest.The units on this map indicate the first material of substantial thickness (generally greater than 3 feet (1 m) encountered beneath the soil layer. The soil layer (commonly a foot or two (about 0.5 m) thick) is not mapped. Other materials, differe

Map showing unconsolidated materials, Stafford Springs quadrangle, Connecticut

No abstract available.
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