Nicholas M. Ratcliffe
Rolfe S. Stanley
Marjorie H. Gale
Peter J. Thompson
Gregory J. Walsh
2011
Bedrock Geologic Map of Vermont
1.0
Map
Scientific Investigations Map
3184
Reston, Virginia
U.S. Geological Survey
Ratcliffe, N.M., Stanley, R.S., Gale, M.H., Thompson, P.J., and Walsh, G.J., 2011, Bedrock geologic map of Vermont: U. S. Geological Survey Scientific Investigations Map 3184, scale 1:100,000, 3 sheets.
https://pubs.usgs.gov/sim/3184/
The bedrock geology was mapped to study the geologic and tectonic history of the State of Vermont. The digital data are intended for use by all government, academic, commercial, or other agencies in need of digital geologic map information.
The bedrock geology was last mapped at a statewide scale 50 years ago at a scale of 1:250,000 (Doll and others, 1961). The 1961 map was compiled from 1:62,500-scale or smaller maps. The current map was created to integrate more detailed (1:12,000- to 1:24,000-scale) modern mapping with the theory of plate tectonics to provide a framework for geologic, tectonic, economic, hydrogeologic, and environmental characterization of the bedrock of Vermont.
Additional contributions to the map were made by Norman L. Hatch, Jr., Douglas W. Rankin, Barry L. Doolan, Jonathan Kim, Charlotte J. Mehrtens, John N. Aleinikoff, and J. Gregory McHone. Digital cartography in Adobe Illustrator by Linda Masonic. GIS by Walsh and Gale. Topographic base maps from U.S. Geological Survey 1:100,000 Albany, MA-NY-VT, 1989; Claremont, NH-VT, 1985; Glens Falls, NY-VT, 1989; Keene, MA-NH-VT, 1986; Rutland, NH-VT, 1985; Ticonderoga, NY-VT, 1989; Lake Champlain North, VT-NH, 1981; Lake Champlain South, VT-NY, 1981; Mount Mansfield, VT, 1986; Montpelier, VT, 1986; Groveton, NH-VT-ME, 1988; and Mount Washington, NH-VT-ME, 1989. Printed map base projection and 10,000-meter grid, zone 18, Universal Transverse Mercator, 1927 North American Datum (NAD). In the Geographic Information System (GIS) database, the printed map was reprojected to the State Plane Coordinate System currently in use in Vermont, 1983 NAD. The printed map is accompanied by a GIS database, large format color sheets in Adobe Portable Document Format (PDF), and a Readme.txt file.
1989
2011
publication date
None planned
-73.519802
-71.444478
45.018809
42.718156
None
geology
geologic
bedrock
None
USA
Vermont
New York
New Hampshire
Washington County
Orange County
Franklin County
Essex County
Orleans County
Chittenden County
Lamoille County
Caledonia County
Addison County
Rutland County
Windsor County
Windham County
Bennington County
Although all data released in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
none
U.S. Geological Survey
Gregory J. Walsh
geologist
mailing address
P.O. Box 628
Montpelier
Vermont
05601
USA
802-828-4528
802-828-4465
gwalsh@usgs.gov
Additional contributions to the map were made by Norman L. Hatch, Jr., Douglas W. Rankin, Barry L. Doolan, Jonathan Kim, Charlotte J. Mehrtens, John N. Aleinikoff, and J. Gregory McHone. Digital cartography in Adobe Illustrator by Linda Masonic (USGS). Geographic Information System (GIS) database by Walsh and Gale.
ArcGIS shapefile format
All attributes digitized during the creation process were verified by displaying the lines and points in the database with respect to the USGS 30 x 60 minute topographic base map (1:100,000 scale), but no formal tests were performed.
These data are believed to be logically consistent, though no tests were performed. Geometry is topologically clean.
The geologic contacts were delineated on USGS 1:100,000-scale topographic base maps from published and unpublished observations. The features in the database are not based on legal parcels or definitions.
The data were delineated on USGS 30 x 60 minute topographic maps at 1:100,000 scale. The horizontal accuracy of solid lines and points is considered "approximate" and dotted lines are considered "concealed", according to the terminology set forth in the FGDC Digital Cartographic Standard for Geologic Map Symbolization (2006) http://ngmdb.usgs.gov/fgdc_gds/geolsymstd.php
The data were delineated on a USGS 30 x 60 minute topographic maps at 1:100,000 scale. Therefore, the vertical accuracy of the base map is assumed to be within National Map Accuracy Standards. Vertical accuracy of the geologic data was not tested.
The geology was compiled at 1:100,000-scale from source maps ranging from 1:12,000- to 1:250,00-scale. The line and polygon data were first drafted with pen and ink on stable-base mylar greenlines of the 1:100,000-scale topographic base maps. Mylar greenlines were scanned and auto-vectorized in Adobe Illustrator. Film positive separates of the published topographic base maps were scanned and mosaicked in Illustrator. Illustrator line work was converted to Autocad DXF vector files and imported to Arc/Info version 9.3. Point data were heads-up digitized. Attribute data were compiled in Excel and joined with the shapefiles in ArcMap. Line and polygon data were edited in Arc/Info and converted to shapefiles. In ArcMap, layer files were created from the shapefiles. In ArcToolbox, Google Earth KMZ files were created from the layer files. Cartography was done in Adobe Illustrator CS4.
2011
Ratcliffe and others (2011)
Gregory J. Walsh
U.S. Geological Survey
Geologist
mailing address
P.O. Box 628
Montpelier
Vermont
05601
USA
802-828-4528
802-828-4465
gwalsh@usgs.gov
0900 to 1700 Eastern Standard Time
Vector
Complete chain
32,125
State Plane Coordinate System 1983
4400
0.999964
-72.500000
42.500000
500000.000000
0.000000
coordinate pair
0.000100
0.000100
meters
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
The geologic data layers in the GIS database of this report include, 1) CONTAX (contacts) - Polygon and arc data layers of bedrock geologic map units, contacts, and faults, including a polygon attribute table, 2) DIKES - Arc data layers of dikes, and 3) GEOCHRONO - Point data layer of U-Pb zircon geochronology sample locations.
https://pubs.usgs.gov/sim/3184/Downloads/Readme.txt
U.S. Geological Survey - Information Services
mailing address
Box 25286, Denver Federal Center
Denver
Colorado
80225
USA
1-888-ASK-USGS
ask@usgs.gov
0900 to 1700 Mountain Standard Time
USGS Scientific Investigations Map 3184
These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, product or process disclosed in this report, and represents its use would not infringe privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data and related materials. Reference therein to any specific commercial product, process, or related service by trade name, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
ArcGIS Shapefile
9.3.1
Geologic units and sample location features
unzip
https://pubs.usgs.gov/sim/3184/Downloads/SIM3184.zip OR https://pubs.usgs.gov/sim/3184/Downloads/SIM3184_nobase.zip
Google Earth
5.2
Geologic units and sample location features
unzip
https://pubs.usgs.gov/3184/Downloads/SIM3184GE.zip
Adobe Acrobat
1.5
Bedrock geologic map in 3 sheets
none
https://pubs.usgs.gov/sim/3184/
none
20120308
USGS
Gregory J. Walsh
geologist
mailing address
P.O. Box 628
Montpelier
Vermont
05601
USA
802-828-4528
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998