Deposit of Major Sediment-Dammed Lake; Glacial Lake Middletown Cromwell Deltaic Deposit) and Surficial Materials (e.g. Unit descriptions are included as attribute value definitions. What geographic area does the data set cover? Much of the production effort was undertaken by the Long Island Sound Resource Center: a partnership between the State of Connecticut, Department of Environmental Protection and the University of Connecticut Marine Sciences and Technology Center. U.S. Geological Survey and State of Connecticut, Department of Environmental Protection GIS style files. Hartford, Connecticut, USA Methodology.

These deposits range from a few feet to several hundred feet in thickness, overlie the bedrock surface and underlie the organic soil layer of Connecticut. How consistent are the relationships among the data, including topology? This information is based on 7.5 minute U.S. Geological Survey 1:24,000-scale topographic quadrangle maps with a 10-ft contour interval. This information portrays the areal extent and grain-size (textural) distributions of surficial material deposits such as glacial till, end moraines, fines (silt and clay), sand, gravel, floodplain alluvium, swamp deposits, salt marsh deposits, talus, and artificial fill. United States. Scientific Investigations Map None. The semi-major axis of the ellipsoid used is 6378137.000000. Planar coordinates are encoded using coordinate pair.

This is part of the following larger work: Janet Radway Stone, U.S. Geological Survey, John P. Schafer, U.S. Geological Survey, Elizabeth Haley London, U.S. Geological Survey, Mary L. DiGiacomo-Cohen, Long Island Sound Resource Center, Ralph S. Lewis, Connecticut Geological and Natural History Survey, Woodrow B. Thompson, Maine Geological Survey, 2005, Quaternary Geologic Map of Connecticut and Long Island Sound Basin: Scientific Investigations MapSIM-2784, U.S. Department of the Interior, U.S. Geological Survey, Reston, Virginia, USA. The authors of the Surficial Materials Map of Connecticut reviewed all of these maps, and did reconnaissance mapping in the remaining quadrangles. A companion map, the Quaternary Geology Map of Connecticut and Long Island Sound Basin (PDF, 56 Mb), Stone, J.R., Schafer, J.P., London, E.H. and Thompson, W.B., 1992, U.S. Geological Survey Special Map, 2 sheets, scale 1:125,000, and pamphlet, 71 p emphasizes the geologic history and the distribution of depositional environments during the emplacement of unconsolidated glacial and postglacial surficial deposits and the landforms resulting from those events. Internal feature number. Not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.). coordinate pair

Unpublished Connecticut Geological Survey Maps . morphosequence

Therefore, a typical meltwater polygon would have a combination of Quaternary (e.g. How does the data set represent geographic features? Previously distributed versions of CTQSGEOM were consistent with the 1998 Open-file Report for the same map. U.S. Geological Survey (data compiler, editor and publisher), State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey (data compiler, editor and publisher), 2005, Connecticut Quaternary Geology Long Island Submerged Marine Deltaic Deposits: State of Connecticut, Department of Environmental Protection, Hartford, Connecticut, USA.

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