Bedrock geologic map of the Uxbridge quadrangle, Worcester County, Massachusetts, and Providence County, Rhode Island

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Gregory J. Walsh
Publication_Date: 2014
Title:
Bedrock geologic map of the Uxbridge quadrangle, Worcester County, Massachusetts, and Providence County, Rhode Island
Edition: 1.0
Geospatial_Data_Presentation_Form: Map
Series_Information:
Series_Name: Scientific Investigations Map
Issue_Identification: 3295
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: U.S. Geological Survey
Online_Linkage: https://dx.doi.org/10.3133/sim3295
Other_Citation_Details:
Walsh, G.J., 2014, Bedrock geologic map of the Uxbridge quadrangle, Worcester County, Massachusetts, and Providence County, Rhode Island: U.S. Geological Survey Scientific Investigations Map 3295, 1 sheet, scale 1:24,000, 36-p. pamphlet, https://dx.doi.org/10.3133/sim3295.

Description:
Abstract:
The bedrock geology of the 7.5-minute Uxbridge, MA-RI quadrangle consists of deformed Neoproterozoic to early Paleozoic crystalline metamorphic and intrusive igneous rocks of the Avalon terrane. The database includes contacts of bedrock geologic units, faults, outcrops, structural geologic information, geochemistry data, and photos.
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. The digital data are intended for use by all government, academic, commercial, or other agencies in need of digital geologic map information.
Supplemental_Information:
Locational data were collected in latitude and longitude (degrees minutes seconds) in WGS84 datum. These data were reprojected to the state plane coordinate system currently in use in Massachusetts. 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: 2007
Ending_Date: 2014
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.75
East_Bounding_Coordinate: -71.625
North_Bounding_Coordinate: 42.125
South_Bounding_Coordinate: 42.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: geology
Theme_Keyword: geologic
Theme_Keyword: bedrock
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Massachusetts
Place_Keyword: Worcester County
Place_Keyword: Providence County
Place_Keyword: Rhode Island
Place_Keyword: Sutton
Place_Keyword: Douglas
Place_Keyword: Uxbridge
Place_Keyword: Northbridge
Place_Keyword: Burrillville
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 9.3. Point data were collected with GPS and attribute data were entered into Microsoft Excel. Data from Excel 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.
Process_Date: 2010
Source_Produced_Citation_Abbreviation: Walsh (2014)
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: 122
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: 2001
Lambert_Conformal_Conic:
Standard_Parallel: 41.716667
Standard_Parallel: 42.683333
Longitude_of_Central_Meridian: -71.500000
Latitude_of_Projection_Origin: 41.000000
False_Easting: 200000.000000
False_Northing: 750000.000000
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) CONTX - Polygon and arc data layers of bedrock geologic map units, including a lithology attribute table, 2) EXPOSURE - Unattributed polygon data layer of bedrock outcrops, 3) FOLDS - Arc data layer of axial traces of major folds, 4) STRUCTURE - Point data layer of ductile and brittle structural geology, 5) PTSCARTO - Point data layers of ductile and brittle structural geology used for cartography; a subset of STRUCTURE, 6) GEOCHEM – Point data for whole-rock geochemistry, and 7) PHOTOS - Point data layers for photographs.
Entity_and_Attribute_Detail_Citation: https://dx.doi.org/10.3133/sim3295/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 3295
Distribution_Liability:
This digital publication was 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, apparatus, product, or process disclosed in this report, or represents that 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 U.S. Geological Survey in the use of these data or related materials. Reference herein to any specific commercial product, process, or related service by trade name, trademark, 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: Arc/Info export
Format_Version_Number: 10.0
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://dx.doi.org/10.3133/sim3295
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://dx.doi.org/10.3133/sim3295
Digital_Form:
Digital_Transfer_Information:
Format_Name: Google earth
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://dx.doi.org/10.3133/sim3295
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20140905
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS
Contact_Person: Gregory J. Walsh
Contact_Position: Research Geologist
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 628
City: Montpelier
State_or_Province: VT
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


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