Geologic map of the Winchester quadrangle, Frederick County,
Virginia
Metadata also available as
Metadata:
- Identification_Information:
-
- Citation:
-
- Citation_Information:
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- 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:
- REQUIRED: The year (and optionally month, or
month and day) for which the data set corresponds to the ground.
- 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: bedrock
- Theme_Keyword: contacts
- 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_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: String
- Point_and_Vector_Object_Count: 238
- 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_cont
- Entity_Type_Definition: exposure of the
contact
- 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_BED83T
- Attribute:
-
- Attribute_Label: WIN_BED8_1
- Attribute:
-
- Attribute_Label: CONTACT
- Attribute_Definition: geologic contact type
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: David Weary
- Contact_Organization: U.S. Geological
Survey
- Contact_Position: Geologist
- Contact_Voice_Telephone: 7093-648-6897
- 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: 0.117
- Metadata_Reference_Information:
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- Metadata_Date: 20030813
- Metadata_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- 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 10:45:08 2003