Quaternary Deposits of Illinois

Identification_Information:

Citation:

Citation_Information:

Originator: Illinois State Geological Survey
Publication_Date: 20211130
Title: Quaternary Deposits of Illinois
Edition: 20211215
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: ISGS GeMS GIS Database
Issue_Identification: ILQuatDeposits1979

Publication_Information:

Publication_Place: Champaign, Illinois
Publisher: Illinois State Geological Survey

Online_Linkage: https://illinois.edu
Online_Linkage: https://isgs.illinois.edu/
Larger_Work_Citation:

Citation_Information:

Originator: Illinois State Geological Survey
Originator: Jerry A. Lineback
Publication_Date: 19790101
Title: Quaternary Deposits of Illinois
Geospatial_Data_Presentation_Form: map
Series_Information:

Series_Name: Miscellaneous Maps
Issue_Identification: MISCMAPquat

Publication_Information:

Publication_Place: Champaign, Illinois
Publisher: Illinois State Geological Survey

Other_Citation_Details:

Lineback, J.A., 1979, Quaternary deposits of Illinois: Illinois State Geological Survey, 1:500,000.

Description:

Abstract:

This is a digital version of the corresponding ISGS geologic map, Quaternary Deposits of Illinois. The spatial reference is geographic coordinates (longitude, latitude), decimal degrees, NAD27 Lambert Conformal Conic, known in ArcGIS as NAD_1927_Lambert_Conformal_Conic which is the projection of the source map. The nominal scale is 1:500,000. This dataset shows Quaternary deposits near the land surface with overlays of loess thickness contours, moraines, and glacial limits. A highly generalized version of Lineback 1979 was produced by ESRI in 1984. The intention of the 2021 project which produced this database, ILQuatDeposits1979, was to digitally archive the original Lineback 1979 map in the U.S. Geological Survey Geologic Map Schema (GeMS). More information on the history of this dataset can be read in the Process Steps of this metadata. Eight Chicago area counties include data which may reflect the Willman and Lineback 1970 map instead of Lineback 1979. Outside of those eight counties this dataset matches Lineback 1979. This GeMS conversion project was funded in part by U.S. Geological Survey NCGMP award number G20AC00371, 2020. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.

Purpose:

This data compilation is intended to provide an overview of the geology of the map area. The data do not replace the need for detailed site-specific studies. The information is not appropriate for, and is not to be used as, a geodetic, legal, or engineering base. The 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.

Supplemental_Information:

ILQuatDeposits1979.gdb is a composite geodataset that conforms to "GeMS (Geologic Map Schema)--a standard format for the digital publication of geologic maps", available at http://ngmdb.usgs.gov/Info/standards/GeMS/. Metadata records associated with each element within the geodataset contain more detailed descriptions of their purposes, constituent entities, and attributes. An OPEN shapefile versions of the dataset is also available. It consists of shapefiles, DBF files, and delimited text files and retains all information in the native geodatabase, but some programming will likely be necessary to assemble these components into usable formats. These metadata were prepared with the aid of script GeMS_FGDC1_Arc10.py, version of 5 October 2021.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20211130

Currentness_Reference: Release date of the source dataset

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -91.56
East_Bounding_Coordinate: -87.47
North_Bounding_Coordinate: 42.52
South_Bounding_Coordinate: 36.96

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: geology
Theme_Keyword: ISGS
Theme_Keyword: Illinois State Geological Survey
Theme_Keyword: silt
Theme_Keyword: sand
Theme_Keyword: alluvium
Theme_Keyword: gravel
Theme_Keyword: loess
Theme_Keyword: surficial
Theme_Keyword: till
Theme_Keyword: colluvium

Theme:

Theme_Keyword_Thesaurus: U.S. Geological Survey
Theme_Keyword: Geologic Map Schema (GeMS) database
Theme_Keyword: USGS
Theme_Keyword: STATEMAP

Place:

Place_Keyword_Thesaurus: Common geographic areas
Place_Keyword: Illinois
Place_Keyword: USA
Place_Keyword: United States of America

Temporal:

Temporal_Keyword_Thesaurus:

Walker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2018, Geologic Time Scale v. 5.0: Geological Society of America, https://doi.org/10.1130/2018.

Temporal_Keyword: Quaternary
Temporal_Keyword: Tertiary

Access_Constraints:

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.

Use_Constraints:

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, info@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.

Data_Set_Credit:

Jerry A. Lineback (compiler); Contributions by: Harold B. Willman, Herbert D. Glass, W. Arthur White, Paul B. DuMontelle, Leon R. Follmer, David L. Gross, Alan M. Jacobs, John P. Kempton, E. Donald McKay, Philip C. Reed; GIS digitization by Barb Stiff, students, and hourlies; GeMS conversion and dataset updates by David Grimley, Katie Mandera, and Colby Brown.

Native_Data_Set_Environment: ArcGIS 10.8
Cross_Reference:

Citation_Information:

Originator:

The Board of Trustees of the University of Illinois, University of Illinois System

Publication_Date: 20180517
Title: University of Illinois Web Privacy Notice
Online_Linkage: https://www.vpaa.uillinois.edu/resources/web_privacy

Cross_Reference:

Citation_Information:

Originator:

The Board of Trustees of the University of Illinois, University of Illinois System

Publication_Date: 20200801
Title: ISGS Terms of Use
Online_Linkage: https://isgs.illinois.edu/terms-use

Cross_Reference:

Citation_Information:

Originator:

The Board of Trustees of the University of Illinois, University of Illinois System

Publication_Date: 20190516
Title:

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

Online_Linkage: https://www.bot.uillinois.edu/governance/general_rules#sec34

Cross_Reference:

Citation_Information:

Originator:

The Board of Trustees of the University of Illinois, University of Illinois System

Publication_Date: 20030219
Title:

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

Online_Linkage: https://cam.illinois.edu/policies/fo-07/

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Confidence that a feature exists and confidence that a feature is correctly identified are described in per-feature attributes ExistenceConfidence and IdentityConfidence. Attributes are as recorded on the published version of the map(s) with the exception of the Gilman Moraine (see Process Steps). Attributes on the published maps were collected from several sources. Not all information is verified by the ISGS. Refer also to the Disclaimer of Warranties and Accuracy of Data section of the Legal Notices of Terms and Conditions section of the University of Illinois Web Privacy Policy. A link is provided in the Cross References section.

Logical_Consistency_Report:

Quality control procedures are used to verify the internal logical consistency of the data. They address the content of attribute tables, presence of required or extraneous data objects, spatial reference definitions, topology, feature location, and the like. The Validate Database tool (USGS GeMS ArcMap Toolbox, version of 5 May 2021) was used to check the GeMS compliance, including topology, of this dataset.

Completeness_Report:

This data can only be used to show the generalized Quaternary boundaries within Illinois at a statewide scale. It is the best available digital representation of Lineback's 1979 map. Polygons in 8 Chicago-area counties might match the Willman and Lineback 1970 map (see Process Steps).

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The nominal scale is 1:500,000. Locations may have been determined in different ways at different scales. The data conform to generally-accepted mapping standards for 1:500,000-scale geological maps, but locational accuracy has not been verified in any quantitative way. Estimated accuracy of horizontal location is given on a per-feature basis by attribute LocationConfidenceMeters. Values are expected to be correct within a factor of 2. A LocationConfidenceMeters value of -9 or -9999 indicates that no value has been assigned.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Illinois State Geological Survey
Originator: Jerry A. Lineback
Publication_Date: 19790101
Title: Quaternary Deposits of Illinois
Geospatial_Data_Presentation_Form: map
Series_Information:

Series_Name: Miscellaneous Maps
Issue_Identification: MISCMAPquat

Online_Linkage: https://isgs.illinois.edu/publications/miscmapquat
Other_Citation_Details:

Lineback, J.A., 1979, Quaternary deposits of Illinois: Illinois State Geological Survey, 1:500,000.

Source_Scale_Denominator: 500000
Type_of_Source_Media: hardcopy
Source_Contribution: original publication
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19790101

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: This Report

Source_Information:

Source_Citation:

Citation_Information:

Originator: Illinois State Geological Survey
Originator: Harold B. Willman
Originator: Jerry A. Lineback
Publication_Date: 19700101
Title: Surficial Geology of the Chicago Region
Geospatial_Data_Presentation_Form: map
Series_Information:

Series_Name: Circular
Issue_Identification: C460, Pl1

Online_Linkage:

https://library.isgs.illinois.edu/Pubs/pdfs/circulars/c460pl1.pdf

Larger_Work_Citation:

Originator: Illinois State Geological Survey
Originator: Harold B. Willman
Publication_Date: 19710101
Title: Summary of the Geology of the Chicago Area
Geospatial_Data_Presentation_Form: map
Series_Information:

Series_Name: Circular
Issue_Identification: C460

Publication_Information:

Publication_Place: Champaign, Illinois
Publisher: Illinois State Geological Survey

Online_Linkage: https://isgs.illinois.edu/publications/c460
Online_Linkage: http://hdl.handle.net/2142/43558
Other_Citation_Details:

Willman, H.B. and J.A. Lineback 1970. Surficial Geology of the Chicago Region, 1:250,000 scale map, in Willman, H.B, 1971, Summary of the Geology of the Chicago Area. Illinois State Geological Survey, Circular 460, 77p., 1 pl.

Source_Scale_Denominator: 250000
Type_of_Source_Media: hardcopy
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19700101

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: WillmanLineback1970
Source_Contribution:

Portions of this dataset (Chicago-area) will match this map, not Lineback 1979.

Process_Step:

Process_Description:

A project to preserve a GeMS compliant version of Lineback 1979 was funded in part by U.S. Geological Survey NCGMP STATEMAP award number G20AC00371, 2020. The goal of this project (funded in part by U.S. Geological Survey NCGMP award number G20AC00371, 2020) was to quality check, convert to GeMS, and archive the best available GIS dataset representing the Lineback 1979 map. An assessment found that an early, but highly generalized, version of the Lineback (1979) map which was digitized by ESRI in 1984 and made available on the Illinois Geospatial Data Clearinghouse (https://clearinghouse.isgs.illinois.edu/data/geology/quaternary-deposits-1979) was not a suitable input for this project. The unpublished, hybrid dataset mentioned in the above process step was determined to be the best available GIS dataset representing Lineback 1979.

Process_Date: 20200901

Process_Step:

Process_Description:

Scanning and re-digitization of the original Lineback (1979) map took place in the 1990s up until 2003, by Barb Stiff (ISGS), who was assisted by students and hourlies under her direction. The Lineback (1979) map was digitized from the original 1:250,000 compilation maps or larger scale field or work maps of the original mappers (DuMontelle, Follmer, Gross, Jacobs, Kempton, Lineback, McKay and Reed). Because of greater detail, the Willman and Lineback (1970) 1:250,000 scale map was digitized and sutured to the Lineback (1979) map in the Chicago region. This resulted in an unpublished, hybrid GIS file based on the Lineback map (94 of 102 Illinois counties) and Willman and Lineback 1970 (portions of 8 [Chicago-area] of 102 Illinois counties).

Source_Used_Citation_Abbreviation: WillmanLineback1970
Source_Used_Citation_Abbreviation: This Report
Process_Date: 20031231

Process_Step:

Process_Description:

Moraines (previously within the original shapefile) were made into an overlay polygon dataset that can be used as a pattern overlay, as it is on the original Lineback map. Corrected Gilman Moraine coding and symbolization in the dataset; it was accidentally not stippled on the 1979 print map.

Source_Used_Citation_Abbreviation: This Report
Process_Date: 20210522

Process_Step:

Process_Description:

The re-digitized (unpublished, hybrid) version of the Lineback map was reviewed by David Grimley (ISGS), and an hourly (Colby Brown) under his direction. They compared the digital file with scanned and georegistered images of Lineback (1979) and Willman and Lineback 1970 to check for accuracy of the linework, polygon coding, and completeness. 94 of the 102 counties in Illinois (outside of Chicago region) were checked for consistency with the original Lineback map; comparisons were made by overlaying the GIS feature dataset with a georeferenced scanned image of the original Lineback (1979) map; comparisons were mostly made at the 1:100,000 scale. 8 of the 102 counties in Illinois (Lake, Cook, Du Page, most of Will, NE Grundy, eastern Kendall, eastern Kane, and eastern McHenry) were checked for consistency of polygon contacts and symbolization with either the original Lineback (1979) map or the Willman and Lineback (1970) Chicago area surficial map. About 110 polygons (of 9483 total) were fixed that had the wrong unit name or symbol. About 31 polygons were added (many are water polys in the Illinois River Valley) that were on the Lineback (1979) map but had not been digitized before; these were added with the polygon cut tool.

Source_Used_Citation_Abbreviation: This Report
Source_Used_Citation_Abbreviation: WillmanLineback1970
Process_Date: 20210601

Process_Step:

Process_Description:

Data converted to GeMS format. Loaded existing data (revised map unit polygons, glacial limit lines, loess thickness lines) to appropriate GeMS feature classes. Compiled the Description of Map Units table from info on the Lineback 1979 map and in consultation with current Quaternary geologists. Generated contact lines from topologically correct MapUnitPolys – topology checked again during database validation. Assigned approximate confidence values. Checked map units with the USGS Geolex Catalog. Suggestions for Geolex edits were submitted based on current stratigraphic understanding, so some historical usages on this map were not recommended.

Process_Date: 20210701

Quaternary Deposits of Illinois

Metadata: