Flt4_2g (Faults of Europe including Turkey)

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Frequently-anticipated questions:

What does this data set describe?
    Title: Flt4_2g (Faults of Europe including Turkey)
    Abstract:
    This coverage includes arcs that describe faults found in the surface outcrops of bedrock of Europe including Turkey (Albania, Andorra, Austria, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Liechtenstein, Luxembourg, The Former Yugoslav Republic of Macedonia, Malta, Monaco, Netherlands, Norway, Poland, Portugal, Romania, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, United Kingdom and Vatican City.)

  1. How should this data set be cited?

    Mark J. Pawlewicz, USGS, Denver, CO (comp)., Susan M. Walden, Contractor to USGS, Denver, CO (comp.), and Douglas W. Steinshouer, Contractor to USGS, Denver, CO (comp.), 20020000, Geo4_2_g (Generalized Geology of Europe and Turkey): U.S. Geological Survey, Denver, CO.

    This is part of the following larger work.

    Mark J. Pawlewicz, USGS, Denver, CO (comp.), Douglas W. Steinshouer, Contractor to USGS, Denver, CO (comp.), and Donald L. Gautier, USGS, Menlo Park, CA, 20020000, Open-file report 97-470I "Map Showing Geology, Oil and Gas Fields, and Geologic Provinces of Europe including Turkey": Open File Report 97-470 World Energy Data on CD-ROM Volume I, Europe, U.S. Geological Survey, Denver, CO.

    Online Links:

    Other_Citation_Details:
    Open File Report 97-470I is one of a series of continental-scale geologic maps of the world being published on CD-ROM by the U.S. Geological Survey World Energy Project.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -22.5030
    East_Bounding_Coordinate: 44.4682
    North_Bounding_Coordinate: 70.7327
    South_Bounding_Coordinate: 34.7293

  3. What does it look like?

    flt4_2g.GIF (GIF)
    Geographic extent of mapped faults of Europe and Turkey

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 2001
    Currentness_Reference: Date of publication

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: Arc/Info coverage

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Complete Chain (2237)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 1 degree of latitude. Longitudes are given to the nearest 1 degree of longitude. Latitude and longitude values are specified in Decimal Degrees.

      The horizontal datum used is North American Datum 1927.
      The ellipsoid used is CLARKE1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.

  7. How does the data set describe geographic features?

    flt4_2g.aat
    Arc Attribute Table (Source: None)

    Fnode#
    From-node identifier of linear feature (Source: Software computed)

    Range of values
    Minimum: 67
    Maximum: 24926

    Tnode#
    To-node identifier of linear feature (Source: Software computed)

    Range of values
    Minimum: 72
    Maximum: 24933

    Lpoly#
    Internal number of polygon to left of arc (Source: Software computed)

    Range of values
    Minimum: 0
    Maximum: 13086

    Rpoly#
    Internal number of polygon to right of arc (Source: Software computed)

    Range of values
    Minimum: 0
    Maximum: 13090

    Length
    Length of line (Source: Software computed)

    Range of values
    Minimum: 0.009
    Maximum: 4.624

    Flt4_2g#
    Internal feature number (Source: Software computed)

    Range of values
    Minimum: 1
    Maximum: 2237

    Flt4_2g-id
    Feature identification number (Source: User Defined)

    Range of values
    Minimum: 79
    Maximum: 34772

    Type
    fault type (Source: User Defined)

    Value Definition
    fi Inferred fault
    flt Apparent fault
    th Apparent thrust fault
    thi Inferred thrust fault

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Attribution of generalized geologic age - Mark J. Pawlewicz, Susan M. Walden and Douglas W. Steinshouer
    Adjusting and rubbersheeting coverage to ESRI base map data - Douglas W. Steinshouer
    Editing and preparation of coverage for publication - Douglas W. Steinshouer
    Documentation and metadata - Douglas W. Steinshouer
    Coordination - Donald L. Gautier

  3. To whom should users address questions about the data?

    Donald L. Gautier
    U.S. Geological Survey
    345 Middlefield Road, MS 975
    Menlo Park, CA 94025
    U.S.A.

    650.329.4909 (voice)
    650.329.4975 (FAX)
    gautier@usgs.gov

    Hours_of_Service: 9:00 am - 5:00 pm PST

Why was the data set created?
To delineate faults in Open File Report 97-470I Map Showing Geology, Oil and Gas Fields and Geologic Provinces of Europe including Turkey, which is being compiled as a reference for the U.S. Geological Survey's World Energy Project assessment of undiscovered, technically recoverable oil and gas resources of the world. This coverage is used to produce a map and an Adobe Acrobat Portable Document file of the map. An Arcview shapefile derived from this coverage is used in an Arcview project and in an ArcExplorer project.

How was the data set created?
  1. From what previous works were the data drawn?

    UNESCO (source 1 of 2)
    H. -R. v. Gaertner (comp.), (comp.), H.W. Walther , (comp.), H.S. Weber , and (comp.), H.-H. Voss , 19710000, International Geological Map of Europe and the Mediterranean Region/ Carte Geologique de l'Europe et des regions riveraines de la Mediterranee: UNESCO, Hannover, Germany.

    Type_of_Source_Media: Paper
    Source_Scale_Denominator: 5000000
    Source_Contribution: Geologic contacts and ages.

    ESRI (source 2 of 2)
    Environmental Systems Research , Inc. (ESRI)(comp.), 19920000, Arcworld cntry_92: Environmental Systems Research Institute, Inc. (ESRI), Redlands, CA.

    This is part of the following larger work.

    Environmental Systems Research , Inc. (ESRI)(comp.), 19920000, Arcworld Digital Map of the World.

    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 3000000
    Source_Contribution: Used as a basemap to refine geographic location of features.

  2. How were the data generated, processed, and modified?

    Date: Jun-2001 (process 1 of 6)
    UNESCO source maps were scanned with 200 dot/inch resolution.

    Data sources used in this process:

    • UNESCO

    Date: Jun-2001 (process 2 of 6)
    UNESCO source maps were registered and rectified using the ESRI Arcworld coastlines coverage.

    Data sources used in this process:

    • UNESCO
    • ESRI

    Date: Dec-2001 (process 3 of 6)
    Geologic contacts, faults and geologic age labels were digitized using the scanned images as a guide.

    Date: Jan-2002 (process 4 of 6)
    The geologic age coverage was rectified by means of the Arc/Info adjust command with the polygon option using the ESRI Arcworld 1:3m shoreline coverage

    Date: Jan-2002 (process 5 of 6)
    Faults were extracted from geology coverage and put into a separate coverage.

    Date: Feb-2002 (process 6 of 6)
    The faults coverage was projected to geographic longitude and latitude coordinates using the Arc/Info project command.

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

    All attributes other than standard Arc/Info attributes are of character type

  2. How accurate are the geographic locations?

    Although a relatively low Root Mean Square (RMS) error was achieved in registering the scanned images, When the coverage was digitized there remained discrepencies with the ESRI sourced coverage. (ESRI Arcworld is chosen as a standard because it is widely accepted and available.) These discrepencies are in part the result of the registration problem, and in part caused by compilation differences between UNESCO and ESRI. Using a roving window, piecewise rubbersheeting was performed with the Arc/Info adjust command, polygon option. Identifiable features of inland water bodies and shorelines common to both sources are used as targets to create the "to - from" links for adjusting the coverage. Overlaying plots of this coverage, corresponding to the source maps in scale, projection and map extent, on a light table shows a variable offset ranging from 0 to 1 mm (5 km).

    The following describe the tolerances:

    1. Original geologic maps are presumed to be of 500 meter maximum accuracy (0.1mm at 1/5,000,000 scale) 

    2. Scanned images are of 200 dot/inch resolution (0.13 mm on paper map) 

    3. Scanned images were registered and rectified with an average RMS error of ~600 meters. (0.06 mm on paper map) 

    4. Fuzzy tolerance was set at 250 meters (0.31 pixel) and weed tolerance was set at 250 meters (0.31 pixel) 

    5. 100 points were sampled on the master coverage for fit with ESRI Arcworld country boundaries and an RMS error was calculated of 1,437 meters, the maximum error was 5,045 meters.

  3. How accurate are the heights or depths?

    N/A

  4. Where are the gaps in the data? What is missing?

    Complete

  5. How consistent are the relationships among the observations, including topology?

    Line topology exists, to and from nodes indicate direction of thrust in thrust faults.

How can someone get a copy of the data set?
Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
This database contains intellectual property of the United Nations Educational, Scientific and Cultural Organization (UNESCO) and of the Commission for the Geological Map of the World (CMGW), and is used with their permission.

  1. Who distributes the data set? (Distributor 1 of 1)

    Central Energy Resources Team
    U.S. Geological Survey
    Box 25046, Denver Federal Center, MS 939
    Denver, CO 80225-0046
    U.S.A.

    303.236.1647 (voice)
    eteamdisks@usgs.gov

    Hours_of_Service: 8:00 am - 4:00 pm MST
  2. What's the catalog number I need to order this data set?

    CD-ROM Open File Report 97-470I "Map Showing Geology, Oil and Gas Fields, and Geologic Provinces of Europe including Turkey"

  3. What legal disclaimers am I supposed to read?

    Although data are processed on a computer system at the U.S. Geological Survey, U.S. Department of the Interior, no warranty, expressed or implied, is made by the U.S. Geological Survey regarding the correctness of the data, or of the utility of the data in any computer system, nor shall the act of distribution constitute any such warranty.

  4. How can I download or order the data?

Metadata contact?
Dates:
Last modified: 01-Apr-2002
Last Reviewed: Apr-2002

Metadata author:
David A. Ferderer
U.S. Geological Survey
Box 25046, Denver Federal Center, MS 939
Denver, CO 80225-0046
U.S.A.

303.236.3611 (voice)
303.236.8822 (FAX)
dferdere@usgs.gov

Hours_of_Service: 8:00 am - 4:00 pm MST
Metadata standard:
FGDC CSDGM (FGDC-STD-001-1998)

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Generated by mp version 2.7.2 on Mon Mar 18 13:38:53 2002