Woodfordian Moraines of Illinois

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Frequently-anticipated questions:

What does this data set describe?

Title: Woodfordian Moraines of Illinois
This is an SDE polygon feature class containing named Woodfordian moraines, or Wisconsinan end moraines, of Illinois. Scale is 1:500,000. The primary source for the data is ISGS Bulletin 94, Pleistocene Stratigraphy of Illinois, Willman and Frye, 1970. Most of the Woodfordian sublobes left a succession of moraines, indicating a pulsing retreat of the ice. The data include the name of each moraine.
Recent updates to the data:

In April 2004 edition 1.1 of the data set was transitioned to storage in an Oracle RDBMS using the ArcSDE geodatabase model. The result (this version) is designated Edition 20040422.

Edition 1.0 of these data were reviewed for internal logical consistency in June, 1998. As a result, COVER-ID values were recalculated to be unique, and five polygons were deleted. See logical consistency report and process steps for June, 1998 for more details. The updated data set was designated edition 1.1.

  1. How should this data set be cited?

    Illinois State Geological Survey, 199108, Woodfordian Moraines of Illinois: ISGS GIS Database GISDB_QTGEO.IL_Moraines_Py, Illinois State Geological Survey, Champaign, Illinois.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -89.753448
    East_Bounding_Coordinate: -87.525546
    North_Bounding_Coordinate: 42.495664
    South_Bounding_Coordinate: 39.334154

  3. What does it look like?

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

    Calendar_Date: 1970
    Publication date of source, being Plate 1, ISGS Bulletin 94, 1970.

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

    Geospatial_Data_Presentation_Form: vector digital data

  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):

      • G-polygon (296)

    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 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.


  7. How does the data set describe geographic features?

    Attribute items are in typical SDE feature class format. Those requiring additional explanation are:

    NAME - Name of each moraine. If blank. the polygon is not a moraine. A list of these names follows: Arcola, Arlington, Arspie, Atkinson, Barlina, Blodgett, Bloomington (undiff), Buda, Cary, Cerro Gordo, Champaign, Chatsworth, Clarendon, Cullom, Deerfield, Dover, El Paso, Elburn Complex, Ellis, Eureka, Farm Ridge, Fletchers, Fox Lake, Gifford, Gilberts, Gilman, Heyworth, Highland Park, Hildreth, Huntley, Iroquois, Kenneyville, Kings Mill, La Moille, La Mollie, LeRoy, Manhattan, Marengo, Mendota, Metamora, Minonk, Minooka, Mount Palatine, Nevins, Newton, Normal, Norway, Palatine, Paris, Park Ridge, Paw Paw, Paxton, Pesotum, Providence, Ransom, Rantoul, Ridge Farm, Rockdale, Roselle, Saint Anne, Saint Charles, Shabbona, Shaws, Sheffield, Shelbyville (undiff), Shirley, Strawn, Theiss, Tinley, Tuprin, Urbana, Valparaiso (undiff), Van Orion, Varna, Washington, West Chicago, West Ridge, Westfield, Westmont, Wheaton, Wilton Center, Zion City

    SYMBOL - indicates if polygon is a moraine 55 - polygon is a moraine 999 - polygon is not a moraine

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?

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

    Contact_Instructions: Please refer to the Distribution Information section.

Why was the data set created?

Coverage created as part of the geologic GIS database at the ISGS to provide automated end moraine information.

The data are not appropriate as a geodetic, legal or engineering base. The data set was not and is not intended as a substitute for surveyed locations, such as can be determined by a registered Public Land Surveyor. Although useful in a GIS as a reference base layer for maps, the data set has no legal basis in the definition of boundaries or property lines.

How was the data set created?

  1. From what previous works were the data drawn?

    none (source 1 of 1)
    H.B. Willman and John C. Frye, 1970, Pleistocene Stratigraphy of Illinois: ISGS Bulletin 94, Illinois State Geological Survey, Urbana, Illinois.

    Other_Citation_Details: Plate 1
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 500000
    Source_Contribution: linework and attributes

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

    Date: Aug-1991 (process 1 of 3)
    Digitized and attributed from Bulletin 94 (Willman and Frye, 1970), Plate 1: Woodfordian Moraines of Illinois

    Date: 17-Jun-1998 (process 2 of 3)
    Data set was reviewed in June, 1998. Review was limited to internal logical consistency of attribute items. Locations of features and accuracy of item values were not checked, except in cases where possible errors became apparent as a result of logical consistency checks. No checks were performed that involved plotting of hardcopy maps and manual overlay with source materials.

    Some changes were made, as follows:

    Deleted five polygons as per Ardith Hansel. They were named Harrisville (2 polys), Temperance Hill (1 poly), Atkinson (2 polys). There is a third Atkinson polygon that was not removed. The two removed were the westernmost pair. These polygons can be identified on the published paper map as the five that lay on the dashed line labeled "Boundary of Woodfordian glaciation", in the northwestern area of the map. New information indicates that these features should not be considered as Woodfordian moraines.

    A polygon was mis-labeled "La Mollie". The correct name is "La Moille". The correction was made.

    Cover-ids were recalculated to be unique.

    Date: 22-Apr-2004 (process 3 of 3)
    Source coverage (moraines) converted to double precision and reprojected to GCS_NAD83 using Workstation ArcInfo 7.2.1.

    The features were imported into the ISGS SDE enterprise database following steps outlined in ISGS procedure GISDB_0009.

    Metadata updated.

    Person who carried out this activity:

  3. What similar or related data should the user be aware of?

    , ISGS Terms of Use.

    Online Links:

    , University of Illinois Web Privacy Notice.

    Online Links:

    , University Copyright Policy (stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4).

    Online Links:

    , Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign.

    Online Links:

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Attributes of the source coverage were reviewed in October, 1991. Some changes and updates were made in June, 1998. See processing steps for details. There are no known polygon attribute values outside the appropriate value domains.

  2. How accurate are the geographic locations?

    Horizontal positional accuracy was verified in October, 1991 by manual overlay of source and hard-copy plots. Lines within one line-width of the source were deemed acceptable. Accuracy of the source with respect to the ground condition was not addressed in this review. Consult the primary source for such information.

  3. How accurate are the heights or depths?

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

    Recent studies have shown that additional end moraines may be found on the land surface of Illinois. However, these have not been added to this feature class. The ISGS publication "Wedron and Mason Groups: Lithostratigraphic Reclassification...", Bulletin 104, Hansel and Johnson (1996) is a good source for information on subsequent developments in this regard.

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

    Polygon and chain-node topology was present in the source coverage. This data set was checked for complete chain-node topology (no dangling arcs, except where appropriate), polygon labels (one per polygon, except for universal polygon), boundary values appropriate for map projection and map units, and appropriate "fuzzy" tolerances. The data set meets these parameters.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

ISGS information must be obtained directly from the ISGS or from an authorized distributor. Be aware that ISGS information obtained from an unauthorized third party may have been altered subsequent to original distribution, or may no longer be current.

Any access to these data, Web sites, computer systems, electronic services, and electronic networks is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice.

Links to these are provided in the Cross References section.

ISGS information is the property of and copyrighted by the Board of Trustees of the University of Illinois with all rights reserved.  University copyright policy is stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4. A link is provided in the Cross References section.

Individuals or entities may make fair use of copyrighted ISGS material, such as reproducing a single figure or table, or using a brief text quotation, without obtaining formal permission, but in all cases the Illinois State Geological Survey must be credited as the source of the material. To reproduce ISGS information beyond the fair use standard, permission must be obtained from the ISGS Information Office, 615 East Peabody Drive, Champaign, Illinois 61820, 217-333-4747, isgs@isgs.illinois.edu. License fees and a license agreement may be required, depending on the proposed usage.

Any use of these data is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice. Links to these are provided in the Cross References section.

Map information is to be used at a scientifically and cartographically appropriate scale, that is, at a scale no greater than indicated on the map or as described in the documentation of the map or map data.  Map information is not appropriate for, and is not to be used as, a geodetic, legal, or engineering base. Map information has no legal basis in the definition of boundaries or property lines and is not intended as a substitute for surveyed locations such as can be determined by a registered Public Land Surveyor.

The data do not replace the need for detailed site-specific studies.

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

    Information Office, Illinois State Geological Survey (ISGS), a division of the Institute of Natural Resource Sustainability (INRS) of the University of Illinois
    615 East Peabody Drive
    Champaign, Illinois 61820

    217-333-4747 (voice)

    Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    Refer to the Legal Notices of Terms and Conditions of the University of Illinois Web Privacy Policy (there is a link in the Cross References section) for policy statements regarding the following:

    Disclaimer of Liability Disclaimer of Warranties and Accuracy of Data Disclaimer of Endorsement Disclaimer for External Links Disclaimer of Duty to Continue Provision of Data Security Choice of Law

    By obtaining these data you agree to the provisions of the University of Illinois Web Privacy Policy, regardless of the manner in which the information was obtained.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    The data are intended for use with GIS software. The ISGS uses ESRI ArcGIS software, however, ESRI formats can be imported into many different GIS software packages. It is expected that customers who obtain these data have the technical expertise to use GIS software. The ISGS does not provide software support of any kind.

Who wrote the metadata?

Last modified: 24-Feb-2009
Metadata author:

Contact_Instructions: Please refer to the Distribution Information section.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Illinois Natural Resources Geospatial Data Clearinghouse

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