Geology of the Winchester quadrangle, Frederick County, Virginia

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Orndorff, R.C., Weary, D.J., and Parker, R.A.
Publication_Date: 2003
Title:
Geology of the Winchester quadrangle, Frederick County, Virginia
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report 03-461
Online_Linkage:
http://pubs.usgs.gov/of/2003/ofr-03-461/
Description:
Abstract:
Bedrock geologic map of the Winchester 7.5 minute quadrangle, Frederick County, VA, USA.
Purpose:
This map was produced to provide basic geologic information for land-use planning and ground-water aquifer studies. This data will be incorporated into a 3-dimesional model of the hydrogeologic framework of the lower Shenandoah Valley.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2003
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -78.252311
East_Bounding_Coordinate: -78.127353
North_Bounding_Coordinate: 39.251690
South_Bounding_Coordinate: 39.123575
Keywords:
Theme:
Theme_Keyword: faults
Access_Constraints: None with proper citation
Use_Constraints:
Although all data and software released on this CD-ROM 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.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: David Weary
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address: MS 926A National Center
City: Reston
State_or_Province: Virginia
Postal_Code: 20164
Country: USA
Contact_Voice_Telephone: 703-648-6897
Contact_Electronic_Mail_Address: dweary@usgs.gov
Hours_of_Service: 7:30-3:00 ET
Security_Information:
Security_Classification: Unclassified
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
All polygon atrtributes were checked for correct values against original field data by the geologists.
Logical_Consistency_Report:
These data are believed to be logically consistent, though no rigorous formal test were performed. Polygon coverages were queried to screen for empty or inconsistent values. Line geometry is topologically clean.
Completeness_Report: The data are complete at a resolution of 1:24,000
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
These data were created by delineating the boundaries from inked lines on a stable-base USGS 7.5 minute topographic map at 1:24,000 scale. Therefore, the mapped horizontal accuracy is assumed to be within National Map Accuracy Standards, with a horizontal accuracy of 45.6 feet at the 95% confidence level.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
These data were created by delineating the boundaries from inked lines on a stable-base USGS 7.5 minute topographic map at 1:24,000 scale. Therefore, the mapped horizontal accuracy is assumed to be within National Map Accuracy Standards, with a vertical accuracy of 11.9 feet at the 95% confidence level.
Lineage:
Source_Information:
Source_Scale_Denominator: 24000
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1987
Process_Step:
Process_Description:
A digital geographic base layer was created by georegistering then rectifying a .tiff image of the USGS 7.5 minute quadrangle. RMS error was required to be less than 3 meters (10 ft) in ground units. Geologic data was added as layers in ArcInfo 8.2 from field maps and notes by the authors. The shape files were converted to coverages and edited to eliminate dangles, gaps, and other errors, then were built to the appropriate topology. Items were created for features in each coverage and attributed as appropriate. Test plots were generated and provided to the author for comparison to the original data and corrections made to all errors identified. The coverages were then exported back to shapefiles for distribution.

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 9

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Transverse Mercator
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -81.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000032
Ordinate_Resolution: 0.000032
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:
Detailed_Description:
Entity_Type:
Entity_Type_Label: win_flts
Entity_Type_Definition_Source: traces of faults
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: FNODE_
Attribute:
Attribute_Label: TNODE_
Attribute:
Attribute_Label: LPOLY_
Attribute:
Attribute_Label: RPOLY_
Attribute:
Attribute_Label: LENGTH
Attribute:
Attribute_Label: WIN_FAULTS
Attribute:
Attribute_Label: WIN_FAUL_1
Attribute:
Attribute_Label: F_TYPE
Attribute_Definition: type of fault
Attribute:
Attribute_Label: F_NAME
Attribute_Definition: name of fault

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: David Weary
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Voice_Telephone: 703-648-6897
Contact_Electronic_Mail_Address: dweary@usgs.gov
Hours_of_Service: 7:30-3:00 ET
Resource_Description: Downloadable Data
Standard_Order_Process:  http://pubs.usgs.gov/of/2003/ofr-03-461/
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.019

Metadata_Reference_Information:
Metadata_Date: 20030813
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
REQUIRED: The organization responsible for the metadata information.
Contact_Person: REQUIRED: The person responsible for the metadata information.
Contact_Address:
Address_Type:
REQUIRED: The mailing and/or physical address for the organization or individual.
City: REQUIRED: The city of the address.
State_or_Province: REQUIRED: The state or province of the address.
Postal_Code: REQUIRED: The ZIP or other postal code of the address.
Contact_Voice_Telephone:
REQUIRED: The telephone number by which individuals can speak to the organization or individual.
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none
Metadata_Security_Information:
Metadata_Security_Classification: Unclassified
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.7.33 on Wed Aug 13 10:45:24 2003