Identification_Information: Citation: Citation_Information: Originator: Nicholas M. Ratcliffe Originator: Rolfe S. Stanley Originator: Marjorie H. Gale Originator: Peter J. Thompson Originator: Gregory J. Walsh Publication_Date: 2011 Title: Bedrock Geologic Map of Vermont Edition: 1.0 Geospatial_Data_Presentation_Form: Map Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: 3184 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sim/3184/ Other_Citation_Details: 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. Description: Abstract: 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. Purpose: 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. Supplemental_Information: 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. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1989 Ending_Date: 2011 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -73.519802 East_Bounding_Coordinate: -71.444478 North_Bounding_Coordinate: 45.018809 South_Bounding_Coordinate: 42.718156 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: geology Theme_Keyword: geologic Theme_Keyword: bedrock Place: Place_Keyword_Thesaurus: None Place_Keyword: USA Place_Keyword: Vermont Place_Keyword: New York Place_Keyword: New Hampshire Place_Keyword: Washington County Place_Keyword: Orange County Place_Keyword: Franklin County Place_Keyword: Essex County Place_Keyword: Orleans County Place_Keyword: Chittenden County Place_Keyword: Lamoille County Place_Keyword: Caledonia County Place_Keyword: Addison County Place_Keyword: Rutland County Place_Keyword: Windsor County Place_Keyword: Windham County Place_Keyword: Bennington County Access_Constraints: 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. Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Gregory J. Walsh Contact_Position: geologist Contact_Address: Address_Type: mailing address Address: P.O. Box 628 City: Montpelier State_or_Province: Vermont Postal_Code: 05601 Country: USA Contact_Voice_Telephone: 802-828-4528 Contact_Facsimile_Telephone: 802-828-4465 Contact_Electronic_Mail_Address: gwalsh@usgs.gov Data_Set_Credit: 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. Native_Data_Set_Environment: ArcGIS shapefile format Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: 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. Logical_Consistency_Report: These data are believed to be logically consistent, though no tests were performed. Geometry is topologically clean. Completeness_Report: 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. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: 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 Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: 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. Lineage: Process_Step: Process_Description: 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. Process_Date: 2011 Source_Produced_Citation_Abbreviation: Ratcliffe and others (2011) Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Gregory J. Walsh Contact_position: Geologist Contact_Address: Address_Type: mailing address Address: P.O. Box 628 City: Montpelier State_or_Province: Vermont Postal_Code: 05601 Country: USA Contact_Voice_Telephone: 802-828-4528 Contact_Facsimile_Telephone: 802-828-4465 Contact_Electronic_Mail_Address: gwalsh@usgs.gov Hours_of_Service: 0900 to 1700 Eastern Standard Time Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain Point_and_Vector_Object_Count: 32,125 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: State Plane Coordinate System 1983 State_Plane_Coordinate_System: SPCS_Zone_Identifier: 4400 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999964 Longitude_of_Central_Meridian: -72.500000 Latitude_of_Projection_Origin: 42.500000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000100 Ordinate_Resolution: 0.000100 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: 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. Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/sim/3184/Downloads/Readme.txt Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - Information Services Contact_Address: Address_Type: mailing address Address: Box 25286, Denver Federal Center City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Electronic_Mail_Address: ask@usgs.gov Hours_of_Service: 0900 to 1700 Mountain Standard Time Resource_Description: USGS Scientific Investigations Map 3184 Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ArcGIS Shapefile Format_Version_Number: 9.3.1 Format_Information_Content: Geologic units and sample location features File_Decompression_Technique: unzip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/sim/3184/Downloads/SIM3184.zip OR http://pubs.usgs.gov/sim/3184/Downloads/SIM3184_nobase.zip Digital_Form: Digital_Transfer_Information: Format_Name: Google Earth Format_Version_Number: 5.2 Format_Information_Content: Geologic units and sample location features File_Decompression_Technique: unzip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/3184/Downloads/SIM3184GE.zip Digital_Form: Digital_Transfer_Information: Format_Name: Adobe Acrobat Format_Version_Number: 1.5 Format_Information_Content: Bedrock geologic map in 3 sheets File_Decompression_Technique: none Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/sim/3184/ Fees: none Metadata_Reference_Information: Metadata_Date: 20120308 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Contact_Person: Gregory J. Walsh Contact_Position: geologist Contact_Address: Address_Type: mailing address Address: P.O. Box 628 City: Montpelier State_or_Province: Vermont Postal_Code: 05601 Country: USA Contact_Voice_Telephone: 802-828-4528 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998