Bedrock Geologic Map of Vermont

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

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: <https://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: <https://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:

<https://pubs.usgs.gov/sim/3184/Downloads/SIM3184.zip> OR <https://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: <https://pubs.usgs.gov/sim/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: <https://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