Bedrock geologic map of the Montpelier and Barre West quadrangles, Washington and Orange Counties, Vermont

Metadata:


Identification_Information:

Citation:

Citation_Information:

Originator: Gregory J. Walsh

Originator: Jonathan Kim

Originator: Marjorie H. Gale

Originator: Sarah M. King

Publication_Date: 2010

Title:

Bedrock geologic map of the Montpelier and Barre West quadrangles, Washington and Orange Counties, Vermont

Edition: 1.0

Geospatial_Data_Presentation_Form: Map

Series_Information:

Series_Name: Scientific Investigations Map

Issue_Identification: 3111

Publication_Information:

Publication_Place: Reston, Virginia

Publisher: U.S. Geological Survey

Online_Linkage: <https://pubs.usgs.gov/sim/3111/>

Other_Citation_Details:

Walsh, G.J., Kim, Jonathan, Gale, M.H., and King, S.M., 2010, Bedrock geologic map of the Montpelier and Barre West quadrangles, Washington and Orange Counties, Vermont: U.S. Geological Survey Scientific Investigations Map 3111, scale 1:24,000, 36-p. text.

 

Description:

Abstract:

The bedrock geology was mapped to study the tectonic history of the area and to provide a framework for ongoing hydrogeologic characterization of the fractured bedrock 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 mapped to study the tectonic history of the area and to provide a framework for ongoing hydrogeologic characterization of the fractured bedrock of Vermont. The digital data are intended for use by all government, academic, commercial, or other agencies in need of digital geologic map information.

Supplemental_Information:

In the Barre West quadrangle, locational data were collected in latitude and longitude (degrees minutes seconds) in WGS84 datum. In the Montpelier quadrangle, locational data were collected in UTM meters NAD 27. These data were reprojected to the State Plane coordinate system currently in use in Vermont. The database is accompanied by a large format color map, an explanatory pamphlet, and a readme.txt file.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2002

Ending_Date: 2010

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -72.625081

East_Bounding_Coordinate: -72.499546

North_Bounding_Coordinate: 44.375124

South_Bounding_Coordinate: 44.124995

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: geology

Theme_Keyword: geologic

Theme_Keyword: bedrock

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Vermont

Place_Keyword: Washington County

Place_Keyword: Orange County

Place_Keyword: Montpelier

Place_Keyword: Barre

Place_Keyword: Middlesex

Place_Keyword: East Montpelier

Place_Keyword: Berlin

Place_Keyword: Calais

Place_Keyword: Worcester

Place_Keyword: Northfield

Place_Keyword: Williamstown

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

Native_Data_Set_Environment: Arc/Info coverage 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 7.5-minute topographic map, 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 7.5-minute topographic maps based on observations at the outcrops shown in the database. Not all outcrops within the area were identified or visited during mapping. The geologic contacts might change if additional outcrops are discovered or exposed as the natural land changes or as the result of development. 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 created on a USGS 7.5 minute topographic map at 1:24,000 scale. Therefore, the horizontal accuracy is assumed to be within National Map Accuracy Standards, with a horizontal accuracy of 45.6 feet at the 95% confidence level. Locational information in the field was provided by a Garmin eTrex Venture GPS receiver or similar.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The data were delineated on a USGS 7.5 minute topographic map at 1:24,000 scale. Therefore, the vertical accuracy is assumed to be within National Map Accuracy Standards, with a vertical accuracy of 11.9 feet at the 95% confidence level.

Lineage:

Process_Step:

Process_Description:

Geology mapped at a scale of 1:24,000. Locational information was provided by GPS receiver. The line and polygon data were first compiled in Adobe Illustrator over registered scans of field sheets using the topographic base. Film positive separates of the published topographic base map were scanned at 400 dpi and registered in ArcMap. Illustrator files were converted to DXF vector files and imported to Arc/Info version 9.2. Point data were collected with GPS and attribute data with a hand-held 3COM Palm Pilot III PDA computer. Data from the PDA were converted to tab-delimited TXT files, joined with GPS coordinate data in ArcMap, saved as a shapefile, and exported into an Arc/Info coverage where point symbols were created and plotted. Line and polygon data were edited in Arc/Info and converted to shapefiles. Shapefiles were plotted in ArcMap and exported to Illustrator. Final cartography was done in Adobe Illustrator CS4. A provisional map of the Montpelier quadrangle (Kim and others, 2003) was used in the compilation of this new map. This report supersedes the map by Kim and others (2003). Kim, J., Gale., M.H., King, S.M., Orsi, C.M., and Pascale, L.R., 2003, Bedrock geology of the Montpelier quadrangle: Vermont Geological Survey Open-File Report VG03-1, scale 1:24,000.

Process_Date: 2010

Source_Produced_Citation_Abbreviation: Walsh and others (2010)

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 and physical 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: 350


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) CONTACTS - Polygon and arc data layers of bedrock geologic map units, including a lithology attribute table, 2) OUTCROP - Unattributed polygon data layer of bedrock outcrops, 3) FOLPT - Point data layer of ductile and brittle structural geology, 4) PTSCARTO - Point data layer of ductile and brittle structural geology used for cartography; a subset of FOLPT, 5) MINES – Point data showing locations of quarries, mines, or prospect pits, and 6) MAFIC – Point data for select mafic rocks.

Entity_and_Attribute_Detail_Citation:<https://pubs.usgs.gov/sim/3111/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 3111

Distribution_Liability:

These data were prepared by an agency of the U.S. Government. Neither the U.S. Government, the Department of the Interior, nor the U.S. Geological Survey, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Arc/Info export

Format_Version_Number: 9.x

Format_Information_Content: Geologic units and structural features

File_Decompression_Technique: unzip

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <https://pubs.usgs.gov/sim/3111/Downloads/SIM3111A.zip>

Digital_Form:

Digital_Transfer_Information:

Format_Name: Shapefile

Format_Version_Number: 1.0

Format_Information_Content: Geologic units and structural features

File_Decompression_Technique: unzip

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <https://pubs.usgs.gov/sim/3111/Downloads/SIM3111A.zip>

Fees: none


Metadata_Reference_Information:

Metadata_Date: 20100816

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

 


Generated by mp version 2.9.8 on Wed Aug 18 14:04:24 2010