Identification_Information:
  Citation:
    Citation_Information:
      Originator: R.D. Conkwright
      Publication_Date: Unpublished Material
      Title: SurfaceGeologyPolys
      Geospatial_Data_Presentation_Form: vector digital data
      Larger_Work_Citation:
        Citation_Information:
          Originator: David K. Brezinski
          Publication_Date: 20130805
          Title: Geologic Map of the Hagerstown, MD, Quadrangle, HAGER2013.1
          Edition: HAGER2013.1
          Geospatial_Data_Presentation_Form: vector digital data
          Series_Information:
            Series_Name: Digital Quadrangle Geologic Map Series
          Publication_Information:
            Publication_Place: Baltimore, MD
            Publisher: Maryland Geological Survey
          Online_Linkage: http://www.mgs.md.gov
  Description:
    Abstract:
      The surface geology feature class provides information about the surficial Quaternary deposits for this quadrangle.  Geologic field mapping in the quadrangle was conducted in 2011-2013 by David K. Brezinski. This map area is included in an investigation of karst development in the Hagerstown Valley.  The karst investigation was conducted by the Maryland Geological Survey as part of a collaborative effort with the Maryland State Highway Administration and the USGS STATEMAP component of the National Cooperative Geologic Mapping Program. 

      The geologic components were originally drafted onto stable-base material using the corresponding U.S. Geological Survey (USGS) topographic quadrangle map as a base (1:24,000 scale).  The digital geologic map was developed for geographic information systems (GIS) using ESRI's ArcGIS Desktop software.  The geologic map is produced in the Maryland State Plane Coordinate System (Lambert conformal conic projection, NAD83, meters) (1:24000 scale).

      The components of the digital geologic map are divided into separate feature classes for bedrock geology, surficial Quaternary deposits, structural line features (e.g., faults), structural point features (e.g., bedding measurements), and geologic cross-section elements.  Digital base map layers were derived from a USGS US Topo digital topographic map for this quadrangle and other sources (see supplemental_information).

      Digital feature attributes for the bedrock geology file include unit labels, unit names and abbreviated lithologic descriptions for the coverage polygons and certainty and general type of geologic contacts for the coverage arcs.
    Purpose: To display surface geologic units and formations in a GIS-based geologic map.
    Supplemental_Information: Surficial Quaternary deposits are not shown in the cross sections, mainly due to the relative thinness of these surficial units and the scale of the cross sections.  Geologic cross-section components are grouped together in a separate feature dataset.
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 2010
        Beginning_Time: unknown
        Ending_Date: 2012
        Ending_Time: unknown
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -77.750655
      East_Bounding_Coordinate: -77.624058
      North_Bounding_Coordinate: 39.721139
      South_Bounding_Coordinate: 39.624835
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Surficial geology, Quaternary, geology, alluvium, terrace deposits
    Place:
      Place_Keyword_Thesaurus: none
      Place_Keyword: Hagerstown, Maryland, Hagerstown Valley
  Access_Constraints: None
  Use_Constraints: These data represent the results of data collection/processing for a specific Department of Natural Resources, Maryland Geological Survey activity and indicate general existing conditions.  As such, they are only valid for the intended use, content, time, and accuracy specification.  The user is responsible for the results of any application of the data for other than their intended purpose.  The Department of Natural Resources, Maryland Geological Survey makes no warranty, expressed or implied, as to the use or appropriateness of the data, and there are no warranties of merchantability or fitness for a particular purpose of use.  The Maryland Geological Survey makes no representation to the accuracy or completeness of the data and may not be held liable for human error or defect.  Data are only valid at 1:24,000 scale.  Data should not be used at a scale greater than that.  By using the data, you signify that you have read the use constraints and accept its terms.  Acknowledgement of the Maryland Geological Survey and credit to the originator(s)/author(s) are expected in products derived from this data.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: R.D. Conkwright
        Contact_Organization: Maryland Geological Survey
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 2300 St. Paul St.
        City: Baltimore
        State_or_Province: Maryland
        Postal_Code: 21218
        Country: USA
      Contact_Voice_Telephone: 410 337-9461
      Contact_Electronic_Mail_Address: bconkwright@dnr.state.md.us
      Hours_of_Service: 8:30am to 4:30pm EST
  Data_Set_Credit: Maryland Geological Survey
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: The geologic map, including the distribution of the Quaternary deposits was hand drawn on stable-base film (e.g., Mylar or Herculene) at a scale of 1:24,000 by the principal geologist based on standard geologic mapping techniques, which involves the integration and interpretation of field observations and available subsurface data (e.g., drilling logs, geophysical logs). The hand-drawn map includes geologic contact lines and coded labels for the geologic map units.  Digital attributes were assigned during the creation of the geology feature class in ArcGIS Desktop.  Each polygon has a unit label attribute designating the mapped geologic unit provided by the principal geologist or MGS GIS project coordinator/editor.  Additional polygon attributes for the digital files were provided by the MGS GIS project coordinator.  Feature attributes were then verified visually in the ArcGIS attribute tables; attributes linked to map layout components were verified visually on the map both in print and symbolized display on-screen.  Maryland Geological Survey performs quality assurance on the digital vector file by comparison of the digital data files and map to the original films. Selected attributes that cannot be visually verified on plots or on screen are interactively queried and verified on screen by the GIS project coordinator and GIS specialist(s)
  Logical_Consistency_Report: Map elements were visually checked for overshoots, undershoots, duplicate features, polygon closure and other errors by the GIS project coordinator and GIS specialist(s) who created the digital data. Hard copy prints of the map were reviewed by the MGS geologists for consistency with basic geologic principles and general conformity to mapping standards.  The graphic data has been tested for consistency through the application of ArcGIS topologic testing.  Polylines were tested to a 0.001 tolerance for overlap or gaps between line features and adjacent geologic formation polygons.
  Completeness_Report: Omissions in geologic unit data would be due primarily to hidden or undiscovered surface units.  The stratigrapher has employed accepted standard procedures and due diligence to ensure the construction of reasonable geologic models. Updates may occur as needed or as additional data become available. Check MGS website for version number or contact MGS Publications Office (see Distribution_Information).  Data are complete based on compilation at 1:24,000 scale.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: Horizontal accuracy of the digital vector file was tested by comparing proof plots with original mylar(s) of the map prepared by the principal geologist(s) at a scale of 1:24000. The comparison was done visually by MGS geologists and the GIS team.  Some corrections/adjustments to contact locations were made per instruction of the principal geologist, directly in the digital form.  The difference in the positional accuracy between the geologic unit contacts as drawn and digitized and the contacts in the field is difficult to quantify in geologic mapping of this type.  Where a contact between two bedrock units is concealed by a mappable thickness of overlying Quaternary materials (e.g., alluvium, colluvium, residuum, terrace deposits or artificial fill) the location is an estimate indicated by a dotted line on the map (attributed as "concealed" in the attribute table).  Where a bedrock contact is not concealed by mappable Quaternary deposits, the certainty of a contact's location may vary because many bedrock contacts are not exposed everywhere (they are often covered by soils and/or vegetation in places).  In these situations the location certainty/accuracy of geologic contacts has been designated by the principal geologist as accurate (symbolized by a solid line), approximate (a long dash pattern), or inferred (a short dash pattern).
    Vertical_Positional_Accuracy:
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Publication_Date: Unpublished Material
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: stable-base material
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 2011
            Ending_Date: 2013
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: David K, Brezinski, unpublished material
      Source_Contribution: Hand drawn ink-on-Mylar developed from field data overlaid on USGS topographic map (1:24000)
    Process_Step:
      Process_Description: The bedrock and surface geology was compiled onto stable-base film, using the USGS 0.007-inch-thick film positives of the 7.5-minute topographic maps as an underlying stable base.  Original scale of map is 1:24,000 (1 inch equals 2,000 feet).  Eight spatial reference points were added to the geology film for georeferencing purposes - the 4 quadrangle corners (geographic coordinates, and four tick marks internal to the base map quadrangle.
      Process_Date: Unknown
    Process_Step:
      Process_Description: Base-stable Mylar cross section artwork was scanned at  300 dpi by a commercial scanning bureau and saved to TIF format image.
      Process_Date: Unknown
    Process_Step:
      Process_Description:
        The scanned TIFF image was brought into ESRI ArcGIS Desktop software and georeferenced (or registered and rectified) to UTM18N, NAD 1983, meters.  The above-mentioned spatial reference points were used as linking points.  When rectifying, nearest neighbor interpolation at a polynomial of 3 was used and attempts were made to achieve the lowest root mean square (RMS) error possible, which for the geology layer was approximately 0.0007. (RMS error is not reported in digitizer inches or physical map inches or millimeters.)  All work--including georeferencing, digitizing and re-projection was in double precision.

        The image was then re-projected to Maryland State Plane Coordinate System 1983 (FIPS 1900), meters
      Process_Date: Unknown
    Process_Step:
      Process_Description: Surface geologic units on scanned image were digitized on-screen at a scale of 1:5000 or greater.  Attributes were added.
      Process_Date: Unknown
    Process_Step:
      Process_Description: Geologic unit feature class topology was built in ArcGIS Catalogue to identify topologic errors between adjacent polygons, and with contacts and faults.  Any errors were corrected.
      Process_Date: Unknown
    Process_Step:
      Process_Description: Geologic units were symbolized and annotated according to FGDC standards.
      Source_Used_Citation_Abbreviation: Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 (FGDC Digital Cartographic Standard for Geologic Map Symbolization)
  Cloud_Cover: n/a
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:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: State Plane Coordinate System
        State_Plane_Coordinate_System:
          SPCS_Zone_Identifier: 1900
          Lambert_Conformal_Conic:
            Standard_Parallel: 38.300000
            Standard_Parallel: 39.450000
            Longitude_of_Central_Meridian: -77.000000
            Latitude_of_Projection_Origin: 37.666667
            False_Easting: 400000.000000
            False_Northing: 0.000000
      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
  Vertical_Coordinate_System_Definition:
    Altitude_System_Definition:
      Altitude_Resolution: 0.000010
      Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: SurfaceGeologyPolys
      Entity_Type_Definition: Polygons defining the boundary and extent of Quaternary deposits.
      Entity_Type_Definition_Source: Maryland Geological Survey
    Attribute:
      Attribute_Label: OBJECTID
      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: HAGER_QUAT_ID
      Attribute_Definition: not used
      Attribute_Definition_Source: Maryland Geological Survey
    Attribute:
      Attribute_Label: UNIT_LABEL
      Attribute_Definition: Label used for surface geology unit
      Attribute_Definition_Source: Maryland Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Qal
          Enumerated_Domain_Value_Definition: Quaternary alluvium
        Enumerated_Domain:
          Enumerated_Domain_Value: Qt
          Enumerated_Domain_Value_Definition: Quaternary terrace deposits
    Attribute:
      Attribute_Label: ANNO_LABEL
      Attribute_Definition: Unit label used for map annotation
      Attribute_Definition_Source: Maryland Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Qt
          Enumerated_Domain_Value_Definition: Quaternary terrace deposits
          Enumerated_Domain_Value_Definition_Source: Maryland Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Qal
          Enumerated_Domain_Value_Definition: Quaternary alluvium
          Enumerated_Domain_Value_Definition_Source: Maryland Geological Survey
    Attribute:
      Attribute_Label: UNIT_NAME
      Attribute_Definition: Descriptive name of unit
      Attribute_Definition_Source: Maryland Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Terrace deposits
          Enumerated_Domain_Value_Definition: Quaternary terrace deposits
          Enumerated_Domain_Value_Definition_Source: Maryland Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Alluvium
          Enumerated_Domain_Value_Definition: Quaternary alluvium
          Enumerated_Domain_Value_Definition_Source: Maryland Geological Survey
    Attribute:
      Attribute_Label: LITH_ABBRE
      Attribute_Definition: Brief description of unit lithology
      Attribute_Definition_Source: Maryland Geological Survey
    Attribute:
      Attribute_Label: COA_ID
      Attribute_Definition: not used
    Attribute:
      Attribute_Label: GEOMAP_ID
      Attribute_Definition: MGS internal map ID
      Attribute_Definition_Source: Maryland Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 101
          Enumerated_Domain_Value_Definition: Hagerstown quadrangle
    Attribute:
      Attribute_Label: HAGERS_QUAT_NUM
      Attribute_Definition: not used
      Attribute_Definition_Source: Maryland Geological Survey
    Attribute:
      Attribute_Label: FGDCRefNo
      Attribute_Definition: not used
      Attribute_Definition_Source: Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 (FGDC Digital Cartographic Standard for Geologic Map Symbolization)
    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.
    Attribute:
      Attribute_Label: RuleID
      Attribute_Definition: Cartographic representation rule ID determines how unit is displayed on the map.
      Attribute_Definition_Source: Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 (FGDC Digital Cartographic Standard for Geologic Map Symbolization)
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name: FC-ID
          Codeset_Source: ESRI Mapping Template, FGDC Digital Cartographic Standard for Geologic Map Symbolization, and Maryland Geological Survey map unit color standards
      Beginning_Date_of_Attribute_Values: 2013
    Attribute:
      Attribute_Label: Override
      Attribute_Definition: Cartographic symbolization override for RuleID rules
      Attribute_Definition_Source: ESRI documentation
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: Anno_38_66
  Overview_Description:
    Entity_and_Attribute_Overview: Assigned attributes are map unit description, geologic age and symbolization codes.
    Entity_and_Attribute_Detail_Citation: FGDC Digital Cartographic Standard for Geologic Map Symbolization, FGDC-STD-013-2006. [http://pubs.usgs.gov/tm/2006/11A02/]
    Entity_and_Attribute_Detail_Citation: ESRI Geologic Mapping Template
    Entity_and_Attribute_Detail_Citation: Maryland Geological Survey geologic unit colorization standards using CMYK color space, based on FGDC color standards
    Entity_and_Attribute_Detail_Citation: FGDCGeoAge Font:  U.S. Geological Survey, 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization (PostScript Implementation): U.S. Geological Survey techniques and Methods 11-A2 [http://pubs.usgs.gov/tm/2006/11A02/].
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: R.D. Conkwright
        Contact_Organization: Maryland Geological Survey
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 2300 St. Paul St.
        City: Baltimore
        State_or_Province: MD
        Postal_Code: 21218
        Country: USA
      Contact_Voice_Telephone: 410 337-9461
      Contact_Electronic_Mail_Address: bconkwright@dnr.state.md.us
      Hours_of_Service: 8:30am to 4:30pm EST
  Resource_Description: Downloadable Data
  Distribution_Liability:
    Where data have been translated from one format to another or initially developed from maps or other sources, reasonable effort has been made to preserve the data quality as originally developed, however, no warranty expressed or implied is made by the Maryland Geological Survey as to the completeness or accuracy of these data and related materials.
        Although all data and software published have been used by the Maryland Geological Survey of the Maryland Department of Natural Resources, no warranty, expressed or implied, is made by that agency as to the accuracy of the data and the related materials and/or the functioning software.  The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the Maryland Geological Survey (or Department of Natural Resources) in the use of these data, software or related materials.
        The Department of Natural Resources shall not be subject to liability for human error, error due to software conversion, defect, or failure of machines, or any material used in the connection with the machines, including tapes, disks, CD-ROMs or DVD-ROMs and energy.  The Maryland Department of Natural Resources shall not be liable for any lost profits, consequential damages, or claims against the Department of Natural Resources by third parties.  The liability of the Department of Natural Resources for damage, regardless of the form of the action, shall not exceed any distribution fees that may have been paid in obtaining spatial data.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ArcGIS geodatabase
        Format_Version_Number: ArcGIS 9.3.1
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://www.mgs.md.gov
          Access_Instructions: Search website for file location
    Fees: none
    Ordering_Instructions: Internet download
    Turnaround: n/a
  Custom_Order_Process:
    Contact the Publications Office
    Maryland Geological Survey
    410 554-5505
    publications@mgs.md.gov
  Technical_Prerequisites: ArcGIS Desktop 9.3.1
Metadata_Reference_Information:
  Metadata_Date: 20130808
  Metadata_Review_Date: 20130729
  Metadata_Future_Review_Date: as needed
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Maryland Geological Survey
        Contact_Person: R.D. Conkwright
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 2300 St. Paul St.
        City: Baltimore
        State_or_Province: Maryland
        Postal_Code: 21218
        Country: USA
      Contact_Voice_Telephone: 410 337-9461
      Contact_Electronic_Mail_Address: bconkwright@dnr.state.md.us
      Hours_of_Service: 8:30am to 4:30pm, EST
      Contact_Instructions: http://www.mgs.md.gov
  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: The metadata must always accompany this data set. The metadata may never be edited or removed from its association with the data set. Only staff from the Maryland Geological Survey may modify the metadata of this data set.  (Derivative geospatial data should have separate metadata with proper citation and reference to this data set.)
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile
