Geologic map 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:
Geologic map 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: unknown
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -78.254606
East_Bounding_Coordinate: -78.119635
North_Bounding_Coordinate: 39.253050
South_Bounding_Coordinate: 39.122006
Keywords:
Theme:
Theme_Keyword: geology
Theme_Keyword: faults
Theme_Keyword: bedrock
Theme_Keyword: joints
Theme_Keyword: bedding
Place:
Place_Keyword: Winchester
Place_Keyword: Frederick County
Place_Keyword: Virginia
Place_Keyword: Shenandoah Valley
Place_Keyword: USA
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: VA
Postal_Code: 20192
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 vertical accuracy is assumed to be within National Map Accuracy Standards, with a horizontal accuracy of 11.9 feet at the 95% confidence level.
Lineage:
Source_Information:
Source_Scale_Denominator: 24000
Type_of_Source_Media: U.S. Geological Survey topographic base map
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. A separate database file for map_unit polygon attributes was generated and populated in Microsoft Access 2000, exported as a .dbf file, converted in Arc/Info to an Info file, then joined to each polygon coverage using map_unit as the join item. 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: G-polygon
Point_and_Vector_Object_Count: 51

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_bed
Entity_Type_Definition: bedrock polygons
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: OBJECTID
Attribute:
Attribute_Label: AREA
Attribute:
Attribute_Label: PERIMETER
Attribute:
Attribute_Label: WIN_BED83T
Attribute:
Attribute_Label: WIN_BED8_1
Attribute:
Attribute_Label: MAP_UNIT
Attribute_Definition: abbreviation for bedrock unit name
Attribute:
Attribute_Label: Shape_Leng
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: OBJECTID_1
Attribute:
Attribute_Label: MAP_UNIT_1
Attribute_Definition: abbreviation of bedrock unit name
Attribute:
Attribute_Label: SURF_BED
Attribute_Definition: surficial or bedrock?
Attribute:
Attribute_Label: SURFTYPE
Attribute_Definition: surficial unit type
Attribute:
Attribute_Label: LITHPRI
Attribute_Definition: primary lithology
Attribute:
Attribute_Label: LITHSEC
Attribute_Definition: secondary lithology
Attribute:
Attribute_Label: LITHTER
Attribute_Definition: tertiary lithology
Attribute:
Attribute_Label: FORM
Attribute_Definition: formation name
Attribute:
Attribute_Label: MEMBER
Attribute_Definition: member name
Attribute:
Attribute_Label: GROUP_
Attribute_Definition: group name
Attribute:
Attribute_Label: SUPERGROUP
Attribute_Definition: supergroup name
Attribute:
Attribute_Label: ROCKCLASS
Attribute_Definition: rock classification
Attribute:
Attribute_Label: AGE
Attribute_Definition: relative age
Attribute:
Attribute_Label: GEOCHR
Attribute_Definition: absolute age geochron
Attribute:
Attribute_Label: GEOCHRTECH
Attribute_Definition: technique used to establish geochron
Attribute:
Attribute_Label: GEOCHRREF
Attribute_Definition: reference for geochron
Attribute:
Attribute_Label: FOSSIL
Attribute_Definition: fossils?
Attribute:
Attribute_Label: FOSSILTYPE
Attribute_Definition: types of fossils
Attribute:
Attribute_Label: FOSSILREF
Attribute_Definition: fossil references
Attribute:
Attribute_Label: CORRELEXTR
Attribute_Definition: correlations
Attribute:
Attribute_Label: ORIGIN
Attribute_Definition: environment of origin
Attribute:
Attribute_Label: RES
Attribute_Definition: resources
Attribute:
Attribute_Label: RESREF
Attribute_Definition: resources references
Attribute:
Attribute_Label: COLOR
Attribute_Definition: color
Attribute:
Attribute_Label: MINPRI
Attribute_Definition: primary mineralogy
Attribute:
Attribute_Label: MINSEC
Attribute_Definition: secondary mineralogy
Attribute:
Attribute_Label: MINOTH
Attribute_Definition: other minerals of note
Attribute:
Attribute_Label: CLASTPRI
Attribute_Definition: primary clasts
Attribute:
Attribute_Label: CLASTSEC
Attribute_Definition: secondary clasts
Attribute:
Attribute_Label: CEMENT
Attribute_Definition: cement type
Attribute:
Attribute_Label: THICKAPPRX
Attribute_Definition: approximate thickness of unit
Attribute:
Attribute_Label: THICKRANGE
Attribute_Definition: range of unit thickness
Attribute:
Attribute_Label: BEDTHIN
Attribute_Definition: unit contains thin beds?
Attribute:
Attribute_Label: BEDMEDIUM
Attribute_Definition: unit contains medium beds?
Attribute:
Attribute_Label: BEDTHICK
Attribute_Definition: unit contains thick beds?
Attribute:
Attribute_Label: CONTUP
Attribute_Definition: nature of upper contact
Attribute:
Attribute_Label: CONTLOW
Attribute_Definition: nature of lower contact
Attribute:
Attribute_Label: FOLPRI
Attribute_Definition: primary foliation
Attribute:
Attribute_Label: FOLSEC
Attribute_Definition: secondary foliation
Attribute:
Attribute_Label: FOLTER
Attribute_Definition: tertiary foliation
Attribute:
Attribute_Label: CMPM
Attribute:
Attribute_Label: RMPM
Attribute:
Attribute_Label: RMRM
Attribute:
Attribute_Label: DEFORMAGE
Attribute_Definition: age of deformation
Attribute:
Attribute_Label: DEFORMTECH
Attribute_Definition: how was deformed dated?
Attribute:
Attribute_Label: DEFORMREF
Attribute_Definition: reference for age of deformation
Attribute:
Attribute_Label: COMMENTS
Attribute_Definition: miscellaneous comments
Overview_Description:
Entity_and_Attribute_Overview:
Each polygon is tagged with several attributes describing basic lithologic and stratigraphic information.

Distribution_Information:
Distributor:
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: VA
Postal_Code: 20192
Country: USA
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
Distribution_Liability:
This data may be distributed and used freely with appropriate referencing.
Standard_Order_Process:  http://pubs.usgs.gov/of/2003/ofr-03-461/
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.249

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_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 10:44:40 2003