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