Geologic map of the Stephens City quadrangle, Clarke, Frederick, and Warren Counties, Virginia

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: David J. Weary
Originator: Randall C. Orndorff
Originator: Wilma Aleman-Gonzalez
Publication_Date: 2006
Title:
Geologic map of the Stephens City quadrangle, Clarke, Frederick, and Warren Counties, Virginia
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: U.S. Geological Survey Open File Report
Publication_Information:
Publication_Place: Reston, VA, USA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2006/1173/>
Description:
Abstract:
Preliminary bedrock geologic map of the Stepens City 7.5 minute quadrangle, Clarke, Frederick, and Warren, Counties, 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: 2006
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -78.251267
East_Bounding_Coordinate: -78.123297
North_Bounding_Coordinate: 39.126634
South_Bounding_Coordinate: 38.997935
Keywords:
Theme:
Theme_Keyword_Thesaurus:
REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
Theme_Keyword: Geology
Theme_Keyword: ground water
Theme_Keyword: faults
Theme_Keyword: folds
Theme_Keyword: joints
Theme_Keyword: cleavage
Place:
Place_Keyword: Frederick County
Place_Keyword: Clarke County
Place_Keyword: Warren County
Place_Keyword: Virginia
Place_Keyword: USA
Place_Keyword: Shenandoah Valley
Stratum:
Stratum_Keyword: Paleozoic
Stratum_Keyword: Cambrian
Stratum_Keyword: Ordovician
Access_Constraints: None
Use_Constraints:
None if properly cited. 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 J. Weary
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address: MS 926A 12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6897
Contact_Facsimile_Telephone: 703-648-6953
Contact_Electronic_Mail_Address: dweary@usgs.gov
Hours_of_Service: 8:00 AM - 3:30 PM ET
Contact_Instructions: email preferred.
Security_Information:
Security_Classification: Unclassified
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535

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 collected with the aid a Trimble GeoXm GPS reciever with a accuracy rating of within 3 meters.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
These data were plotted on a USGS 7.5 minute topographic map at 1:24,000 scale. Therefore, the mapped vertical accuracy is assumed to approach National Map Accuracy Standards, with a horizontal accuracy of 11.9 feet at the 95% confidence level.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1986
Title: Stephens City quadrangle
Source_Scale_Denominator: 24,000
Type_of_Source_Media: U.S. Geological Survey topographic map
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 captured in the field as point locations via a Trimble GeoXM GPS-enabled handheld computer running ArcPad GIS software. The shape files were converted to ArcGIS geodatabases and edited over the basemap in ArcMap 9.0. Test plots were generated and provided to the authors 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 feature class using map_unit as the join item. The feature classes were then exported back to shapefiles for distribution.
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\DOCUME~1\DAVEWE~1\LOCALS~1\Temp\xml2E5.tmp

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: 25

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
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: NGVD 1929
Altitude_Resolution: 0.000010
Altitude_Distance_Units: feet
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: sc_alluvium
Attribute:
Attribute_Label: OBJECTID_1
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: SC_QUAT_
Attribute:
Attribute_Label: SC_QUAT_ID
Attribute:
Attribute_Label: MAP_UNIT
Attribute_Definition: abbreviation of bedrock unit name
Attribute:
Attribute_Label: map_unit
Attribute_Definition: abbreviation of bedrock unit name
Attribute:
Attribute_Label: Shape_Leng
Attribute:
Attribute_Label: OID_
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: fossil type
Attribute:
Attribute_Label: FOSSILREF
Attribute_Definition: fossil reference
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_Definition: Contact metamorphic minerals
Attribute:
Attribute_Label: RMPM
Attribute_Definition: Regional metamorphic minerals
Attribute:
Attribute_Label: RMRM
Attribute_Definition: Retrograde regional metamorphic minerals
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
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
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.
Overview_Description:
Entity_and_Attribute_Overview: Alluvium polygons for the Stephens City quadrangle.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: David J. Weary
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address: MS 926A 12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6897
Contact_Facsimile_Telephone: 703-648-6953
Contact_Electronic_Mail_Address: dweary@usgs.gov
Hours_of_Service: 8:00 AM - 3:30 PM ET
Contact_Instructions: email preferred.
Resource_Description: Downloadable Data
Distribution_Liability:
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
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://pubs.usgs.gov/of/2006/1173/>
Offline_Option:
Offline_Media: CD ROM
Ordering_Instructions:
These data are availble at no charge over the internet at: <http://pubs.usgs.gov/of/2006/1173/>. CD versions may be requested at dweary@usgs.gov.
Custom_Order_Process: email dweary@usgs.gov for information.
Technical_Prerequisites:
The graphic file for the full map plate requires Adobe Acrobat Reader 5.0 or above. Use of the GIS data files requires a GIS software capable of viewing shapefiles, geodatabases, or importing .e00 Arc export files propduced by ESRI ArcMap V. 9.0.

Metadata_Reference_Information:
Metadata_Date: 20060605
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: David J. Weary
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address: MS 926A 12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6897
Contact_Facsimile_Telephone: 703-648-6953
Contact_Electronic_Mail_Address: dweary@usgs.gov
Hours_of_Service: 8:00 AM - 3:30 PM ET
Contact_Instructions: email preferred.
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 2.8.6 on Mon Jun 05 14:08:26 2006