Identification_Information:
  Citation:
    Citation_Information:
      Originator: David K. Brezinski, Maryland Geological Survey
      Publication_Date: Unpublished Material
      Title: Faults
      Geospatial_Data_Presentation_Form: vector digital data
  Description:
    Abstract: Contains representation class for fault line symbols from Section 2 of FGDC Digital Cartographic Standard for Geologic Map Symbolization (FGDC Document Number FGDC-STD-013-2006)
    Purpose: To display the location of geologic faults on the Hagerstown quadrangle geologic map.
  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: -77.751044
      East_Bounding_Coordinate: -77.623573
      North_Bounding_Coordinate: 39.721971
      South_Bounding_Coordinate: 39.623984
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: none
      Theme_Keyword: faults, bedrock geology
    Place:
      Place_Keyword_Thesaurus: none
      Place_Keyword: Hagerstown, Maryland
  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: Robert 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: 410 554-5545
      Contact_Electronic_Mail_Address: bconkwright@dnr.state.md.us
      Hours_of_Service: 8:00am - 4:30pm EST
  Data_Set_Credit: Maryland Geological Survey
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.1850
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: The geologic map 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, faults and coded labels for the geologic map units.  Digital attributes were assigned during the creation of the geology layer in ArcInfo. Feature attributes were then verified visually in the ArcInfo 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 missing and duplicate features and feature attributes and other errors by the map author(s), GIS project coordinator and GIS specialist(s) who created the digital database. 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: 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 fault locations were made per instruction of the principal geologist, directly in the digital form.  The difference in the positional accuracy between the faults as drawn and digitized and the faults in the field is difficult to quantify in geologic mapping of this type.  Where a fault 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 arc attribute table in coverage).  Where a fault is not concealed by mappable Quaternary deposits, the  location certainty may vary because faults are not exposed everywhere (they are often covered by soils and/or vegetation in places).  In these situations the location certainty/accuracy of faults 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).
  Lineage:
    Source_Information:
      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: 2010
            Beginning_Time: unknown
            Ending_Date: 2012
            Ending_Time: unknown
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: David K. Brezinski, Maryland Geological Survey, unpublished material
    Process_Step:
      Process_Description: Field measurements and observations of geologic structural features were recorded by David Brezinski.  These data along with other geologic field records were compiled onto a base topographic map (USGS 7.5-minute 1:24,000 topographic series).  The final geologic compilation was drawn by David Brezinski on a stable-base material (Mylar), using the USGS 0.007-inch-thick film positive of the corresponding 7.5-minute topographic map as an underlying stable base.  Spatial reference points were added to the geology mylar for georeferencing purposes.
      Process_Date: Unknown
    Process_Step:
      Process_Description: The base-stable Mylar map was scanned at a commercial scanning facility at 300 DPI and saved as a TIF format image.
      Process_Date: Unknown
    Process_Step:
      Process_Description: The scanned TIFF image was brought into ESRI ArcMap software and georeferenced (or registered and rectified) to the Maryland State Plane Coordinate System (North American Datum (NAD) 1983 US meters).  The above-mentioned spatial reference points were used as linking points.  When rectifying, nearest neighbor interpolation at a polynomial of 2 was used and attempts were made to achieve the lowest root mean square (RMS) error possible, which for the structural point layer was approximately 0.0002.  NOTE: this RMS error is reported in geospatial units of the projection, which at this point are feet.  (RMS error is not reported in digitizer inches or physical map inches or millimeters.)
      Process_Date: Unknown
    Process_Step:
      Process_Description: Geologic unit polygons on scanned image were digitized on-screen at a scale of 1:5000 or greater using ArcGIS Desktop's ArcScan utility in manual mode.
      Process_Date: Unknown
    Process_Step:
      Process_Description: Attributes were entered into geodatabase  Fault feature class table.
      Process_Date: Unknown
    Process_Step:
      Process_Description: Topology for Fault feature class was construct in Arc Catalog.  Topology was examined and corrected in ArcGIS Desktop 9.3.1
      Source_Used_Citation_Abbreviation: ESRI documentation
      Process_Date: Unknown
    Process_Step:
      Process_Description: Line styles were applied to faults with ESRI map representations, using specifications from FGDC standard Appendix A, Section2 - Faults
      Source_Used_Citation_Abbreviation: Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 (FGDC Digital Cartographic Standard for Geologic Map Symbolization)
      Process_Date: Unknown
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: 0
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Lambert Conformal Conic
        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: 0.0001
          Ordinate_Resolution: 0.0001
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: D_WGS_1984
      Ellipsoid_Name: WGS_1984
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257224
  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: Faults
    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: Imp_FType
      Attribute_Definition: not used
    Attribute:
      Attribute_Label: Label
      Attribute_Definition: not used
    Attribute:
      Attribute_Label: LocationConfidenceMeters
      Attribute_Definition: not used
    Attribute:
      Attribute_Label: ExConf
      Attribute_Definition: not used
    Attribute:
      Attribute_Label: IDConf
      Attribute_Definition: not used
    Attribute:
      Attribute_Label: LocationMethod
      Attribute_Definition: not used
    Attribute:
      Attribute_Label: DataSources_ID
      Attribute_Definition: not used
    Attribute:
      Attribute_Label: Notes
      Attribute_Definition: Short description of fault
      Attribute_Domain_Values:
        Unrepresentable_Domain: Descriptive text
      Beginning_Date_of_Attribute_Values: 2013
    Attribute:
      Attribute_Label: RuleID
      Attribute_Definition: Map symbolization rules
      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:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2.1.5
          Enumerated_Domain_Value_Definition: Fault (generic; vertical, subvertical, or high-angle; or unknown or unspecified orientation or sense of slip); Identity and existence certain, location inferred
          Enumerated_Domain_Value_Definition_Source: Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 (FGDC Digital Cartographic Standard for Geologic Map Symbolization), Section 2, Faults.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2.1.7
          Enumerated_Domain_Value_Definition: Fault (generic; vertical, subvertical, or high-angle; or unknown or unspecified orientation or sense of slip);  Identity and existence certain, location concealed.
          Enumerated_Domain_Value_Definition_Source: Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 (FGDC Digital Cartographic Standard for Geologic Map Symbolization)
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2.4.3
          Enumerated_Domain_Value_Definition: Reverse fault.  Identity and existence certain, location approximate. Rectangles on upthrown block.
          Enumerated_Domain_Value_Definition_Source: Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 (FGDC Digital Cartographic Standard for Geologic Map Symbolization)
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2.4.7
          Enumerated_Domain_Value_Definition: Reverse fault.  Identity and existence certain, location concealed. Rectangles on upthrown block.
          Enumerated_Domain_Value_Definition_Source: Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 (FGDC Digital Cartographic Standard for Geologic Map Symbolization)
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2.8.3
          Enumerated_Domain_Value_Definition: Thrust fault (1st option)—Identity and existence certain, location approximate. Sawteeth on upper (tectonically higher) plate.
          Enumerated_Domain_Value_Definition_Source: Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 (FGDC Digital Cartographic Standard for Geologic Map Symbolization)
      Beginning_Date_of_Attribute_Values: 2013
    Attribute:
      Attribute_Label: Override
      Attribute_Definition: Map symbolization rule override
      Attribute_Definition_Source: ESRI documentation
      Attribute_Domain_Values:
        Unrepresentable_Domain: BLOB entity
      Beginning_Date_of_Attribute_Values: 2013
    Attribute:
      Attribute_Label: FGDCRefNo
      Attribute_Definition: FGDC Standard Reference Number for faults
      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:
        Enumerated_Domain:
          Enumerated_Domain_Value: [Same as RuleID attribute]
    Attribute:
      Attribute_Label: FGDCDesc
      Attribute_Definition: short verbal description
      Attribute_Definition_Source: Maryland Geological Survey
    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.
  Overview_Description:
    Entity_and_Attribute_Overview: Faults can be classified as one of a number of types, depending on the nature of their geometry and (or) sense of offset. Examples of fault types include the following: normal (low-angle, listric); reverse; thrust; overturned thrust; vertical; strike-slip (right-lateral, left-lateral); oblique-slip; detachment; or some combination of the above. Information about a fault's type is specified as a feature attribute in the geologic map database. When the map scale allows, such information also is represented on the geologic map by a specialized line symbol and (or) line-symbol decoration. A particularly robust set of specialized line symbols and line-symbol decorations has evolved to represent the various fault types (see Appendix A, Section 2). In general, unless otherwise stated on the map or in the geologic map database, faults that lack such specialized symbology should be considered generic; that is, their geometry or sense of offset either is not known or has not been specified. Some faults are relatively minor structures whose traces are mapped within single geologic units until the faults can no longer be observed or they no longer exist. More commonly, faults are mapped as larger, thoroughgoing structures that can produce a significant amount of offset between one or more geologic units, so that the rupture surfaces form new map-unit boundaries. In addition, faulting sometimes can take place at the stratigraphic position where a contact would normally exist between two stratigraphically coherent geologic units. But because faulting is not a process intrinsic to a geologic units' genesis (in these cases, faulting has occurred through already-formed geologic units), these bounding surfaces do not meet the criteria to be called contacts (see discussion above in Section 3.4.1, entitled "Contacts"). Therefore, although they may form boundaries between geologic units, such structures are classified as "faults," not "fault contacts" or "faulted contacts."
    Entity_and_Attribute_Detail_Citation: Maryland Geological Survey
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Robert 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: 410 554-5545
      Contact_Electronic_Mail_Address: bconkwright@dnr.state.md.us
      Hours_of_Service: 8:00am - 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: ESRI ArcGIS 9.3.1 geodatabase
        Format_Version_Number: 9.3.1
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http:\\www.mgs.md.gov
    Fees: none
  Custom_Order_Process: Contact Maryland Geological Survey
  Technical_Prerequisites: ESRI ArcGIS Desktop 9.3.1
Metadata_Reference_Information:
  Metadata_Date: 20130728
  Metadata_Review_Date: 20130730
  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: 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.)
