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Surface Geology layer
The Surface Geology layer appears in the New York/New Jersey/Connecticut and Florida editions, and has a different origin in each case. Geology NY/NJ/CTThis layer is a compilation of several layers available from various sources.
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OriginNew YorkNew York: NYS Museum / NYS Geological SurveySurficial Geology These maps are available from the New York State Museum. Abstract 1:250,000 scale data. UTM Zone 18, NAD27. The state is tiled into five regions. Each region corresponds with the original map sheet. These datasets replace the older version in which the state was tiled into ten regions. The scale of these datasets is 1:250,000. Using this data at a larger scale will NOT provide greater accuracy. In fact, it is a misuse of the datasets. New JerseyNew Jersey: New Jersey Department of Environmental Protection (NJDEP)/New Jersey Geological Survey (NJGS)Surficial Geology of New Jersey This map is available from the New Jersey Department of Environmental Protection. Abstract This geographic information system (GIS) data set shows the extent of surficial geologic materials in New Jersey. Surficial materials are the unconsolidated glacial, river, wetland, windblown, marine, estuarine, and hillslope sediments and weathered rock materials that overlie bedrock and Coastal Plain formations and that are the parent material for agronomic soils. Purpose To depict the extent of surficial geologic materials across the State of New Jersey. It contains information for assessing and protecting aquifers, assessing water quality, and providing a framework for evaluating hazards and resources. It was prepared in cooperation with the U. S. Geological Survey (USGS) National Geologic Mapping Program. Additional information Digital compilation of geologic data sets by Ronald S. Pristas. Authors Notes: Enlargement of the data to more detailed scales than specified could result in registration errors. If information is needed at more detailed scales, please contact the New Jersey Geological Survey to determine the status of detailed mapping. ConnecticutConnecticut: .S. Geological Survey and Connecticut Geological and Natural History Survey (DEP)Connecticut Quaternary Geology / Surficial Materials Master (CTQSGEOM) This map is available from the Connecticut Department of Environmental Protection. Abstract The Surficial Materials data layer describes the unconsolidated glacial and postglacial deposits of Connecticut in terms of their grain-size distribution (texture) as compiled at 1:24,000 scale for the Surficial Materials Map of Connecticut (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). Glacial meltwater deposits (stratified deposits) are particularly emphasized because these sediments are the major groundwater aquifers in the State and are also the major source of construction aggregate. These deposits are described in terms of their subsurface distribution of textures as well as their areal extent. The texture of meltwater deposits through their total vertical thickness in the subsurface is shown to the extent that it is known or can be inferred. In some places only one textural unit (such as SG - SAND AND GRAVEL) describes the whole vertical extent of the meltwater deposits; in other places "stacked units" (such as SG/S/F - SAND AND GRAVEL overlying SAND overlying FINES) indicate changes of textural units in the subsurface. FloridaThis layer is actually mislabeled -- it represents the geology of Florida, and will be renamed "Geology (FGS)" in the next release. Many thanks to Thomas M. Scott, PhD, P.G. (one of the authors of this map) for pointing this out.
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OriginFlorida Department of Environmental Protection, Florida Geological SurveyGeologic map of the State of Florida: Florida Geological Survey Map Series 146 This data is available directly from the USGS. CitationScott, T.M., Campbell, K.M., Rupert, F.R., Arthur, J.D., Green, R.C., Means, G.H., Missimer, T.M., Lloyd, J.M., Yon, J.W., and Duncan, J.D., 2001, Geologic map of the State of Florida: Florida Geological Survey Map Series 146. There is an Open-file Report that accompanies the map: Scott, T.M., 2001, Text to accompany the geologic map of Florida: Florida Geological Survey Open-file Report 80, 29 p.Description of data sourceAbstractGroundwork for a new geologic map of Florida began in the 1980s with a county-level mapping effort as part of a statewide radon investigation. The county maps created for the radon project were merged and modified to produce a new State map.Additional informationThe geologists from the Florida Geological Survey (FGS) involved in the project included Jon Arthur, Richard Green, Guy Means, Jacqueline Lloyd, Ken Campbell, Joel Duncan, Frank Rupert, and Tom Scott. Tom Missimer, Missimer International, Ft. Myers, Florida was part of the mapping team for Charlotte and Lee Counties. Previous mapping provided a basis for this project. Geologists involved in the preliminary mapping included Paulette Bond, Richard Johnson, Ed Lane, Walt Schmidt and Bill Yon. |
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