Illinois State Geological Survey 1995 20040422 vector digital data ISGS GIS Database GISDB_QTGEO.IL_Stack_Units_To_15m_Py Champaign, Illinois Illinois State Geological Survey This is a polygon feature class containing stack-unit map designations for Illinois. The primary source is ISGS Circular 542, Stack-unit Mapping of Geologic Materials in Illinois to a Depth of 15 Meters, Berg and Kempton (1988). The data have been subsequently updated from various sources. The nominal scale is 1:250,000. Stack-unit maps show the distribution of earth materials vertically from the surface to a specified depth and horizontally over a specified area They also show the succession of geologic units in their order of occurrence within the specified depth. This information is now available for the entire state of Illinois with the publication of the statewide stack-unit map of geologic materials to a depth of 15 meters (49.3 ft.). The statewide stack-unit map, originally made up of four separate regional maps, provides basic geologic information for interpretive mapping for regional, resource-based land-use planning and decision making. This feature class is the result of appending the four separate digital files into one statewide dataset. Note also that this feature class incorporates stack-unit data from the ISGS Paducah Stack-Unit map (Berg and Greenpool, 1994). The portion that falls within the 1 x 2 degree Paducah quadrangle had been entirely updated with data from the Paducah stack-unit map coverage. The general concept of a stack-unit map is that once the arrangement of geologic deposits is established within a framework of controls (data and geologic concepts), materials can be evaluated in terms of their industrial mineral resource potential and hydrogeologic and engineering properties. Because stack-unit maps are also stratigraphic maps, they can provide clues to many aspects of geologic history that occurred prior to events represented by surficial mapping. Depth is a significant factor for most resource and land-use interpretations derived from stack-unit data. For example, in the evaluation of sites for municipal landfills, geologic material to a depth of 15 meters should be documented. For near-surface or surficial waste-disposal practices, for evaluation of materials for shallow construction purposes, or assessment of recharge, detailed information in the upper 6 meters is usually the most important. For mineral resource evaluation, the thickness of overburden and thickness and character of the resource must be considered. Likewise, for shallow groundwater resource evaluation, the thickness, continuity, and depth of an aquifer, as well as the properties of overlying materials, must be recognized. Statewide stack-unit data have been used to produce interpretive maps for projects such as municipal, surface and near surface waste disposal (susceptability to contamination), and shallow aquifer identification. They can be used to appraise (1) regional geologic conditions, (2) general geologic conditions that might affect excavation and construction of roads, pipelines or sewers, and (3) possible locations of mineral resources, particularly sand and gravel, clay, peat, limestone and dolomite. This feature class is appropriate for use at scales of 1:250,000 and smaller. 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. Recent updates to the data: In April 2004 edition 2.1 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 2.0 of these data were reviewed for internal logical consistency in June, 1998. As a result, tics were replaced, COVER-ID values were recalculated to be unique, and an empty annotation feature class was dropped. The updated data set was edition 2.1. 1988 Publication date of primary source Complete None planned -91.513518 -87.495214 42.508348 36.969972 none geology stack unit surficial statewide glacial groundwater nonlithified semilithified lithified waste disposal aquifer shallow aquifer Quaternary none Illinois none Reproduction or redistribution of copyrighted digital data sets or products derived therefrom outside of licensee's organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or in part, without permission of DNR. Any hardcopies utilizing DNR data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent DNR data sets, nor to imply that changes they made were approved by DNR. Please refer to the distribution information. ArcGIS 9.1 on Windows Polygon attribute values were verified polygon by polygon against the source mylar separates by three separate individuals. The logical consistency of stack-unit designations was verified at the same time (i.e. Did sum of stacked thickness account for 50 feet of depth? Were geological units in the proper order?) 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. There are no known arc or polygon attribute values outside the appropriate value domains. This feature class includes updates not on the published version. A small area (approx 1-2 square miles) north of Martinsville in Clark County was updated in 1996. The entire southern portion of the state that falls within the 1 x 2 degree Paducah quadrangle was updated from the Paducah stack-unit map in 1995. Horizontal positional accuracy was verified by at least three individuals by visual comparison (manual overlay) of source mylar separates and hard-copy plots. Arcs within one line-width of source mylars were deemed acceptable. For accuracy of source data, consult Berg and Kempton, 1988, ISGS Circular 542. Berg, R.C. and J.P. Kempton 1988 report with map plates ISGS Circular 542 Champaign, Illinois Illinois State Geological Survey paper 1988 publication date none polygon attribute methodology and map plates Berg, R.C. and J.P. Kempton 1988, unpublished map 250000 stable-base material 1988 publication date none arc lines and polygon labels Anderson, R.C. 1980 report ISGS Circular 510 Champaign, Illinois Illinois State Geological Survey paper 1980 publication date none unknown Berg, R.C., J.P.Kempton, L.R. Follmer, and D.P. McKenna 1985 ISGS Guidebook ISGS Guidebook 19 Champaign, Illinois Illinois State Geological Survey paper 1985 publication date none unknown Berg, R.C., J.P. Kempton, and A.N. Stecyk 1984 report ISGS Circular 531 Champaign, Illinois Illinois State Geological Survey paper 1984 publication date none unknown Berg, R.C., J.P. Kempton, and K. Cartwright 1984 map and report ISGS Circular 532 Champaign, Illinois Illinois State Geological Survey paper 1984 publication date none unknown: Bergstrom, R.E. 1970 report ISGS Environmental Geology Notes 36 Champaign, Illinois Illinois State Geological Survey paper 1970 publication date none unknown: Bergstrom, R.E., K. Piskin, and L.R. Follmer 1976 report ISGS Circular 497 Champaign, Illinois Illinois State Geological Survey paper 1976 publication date none unknown Gross, D.L. 1970 report ISGS Environmental Geology Notes 33 Champaign, Illinois Illinois State Geological Survey paper 1970 publication date none unknown: Hackett, J.E. and M.R. McComas 1969 report ISGS Circular 438 Champaign, Illinois Illinois State Geological Survey paper 1969 publication date none unknown Hines, J.K. 1986 report and map Champaign, Illinois Illinois State Geological Survey paper 1986 publication date none unknown: Hunt, C.S. and J.P. Kempton 1977 report ISGS Environmental Geology Notes 83 Champaign, Illinois Illinois State Geological Survey paper 1977 publication date none unknown Jacobs, A.M. 1971 report ISGS Circular 465 Champaign, Illinois Illinois State Geological Survey paper 1971 publication date none unknown Kempton, J.P. 1981 report ISGS Environmental Geology Notes 100 Champaign, Illinois Illinois State Geological Survey paper 1981 publication date none unknown Kempton, J.P. and K. Cartwright 1984 report Bulletin of the Association of Engineering Geologists unknown unknown unknown paper 1984 publication date none unknown Kempton, J.P., J.E. Bogner, and K. Cartwright 1977 report ISGS Open File Report OFS 1977-2 Champaign, Illinois Illinois State Geological Survey paper 1977 publication date none unknown Kempton, J.P., W.J. Morse, and A.P. Visocky 1982 report ISGS Cooperative Groundwater Report 8 Champaign, Illinois Illinois State Geological Survey co-pub: Il St. Water Survey paper 1982 publication date none unknown Kempton, J. P., R. W. Ringler, P. C. Heigold, K. Cartwright and V.L Poole 1981 report ISGS Environmental Geology Notes 101 Champaign, Illinois Illinois State Geological Survey paper 1981 publication date none unknown Kolata, D.R. and A. Graese 1983 report ISGS Circular 528 Champaign, Illinois Illinois State Geological Survey paper 1983 publication date none unknown Larsen, J.I. 1973 report ISGS Circular 481 Champaign, Illinois Illinois State Geological Survey paper 1973 publication date none unknown LeSeur, L. 1985 report contract report 367 Champaign, Illinois Illinois State Water Survey paper 1985 publication date none unknown Lineback, J.A. 1979 map ISGS Map unknown Champaign, Illinois Illinois State Geological Survey 500000 paper 1979 publication date none unknown: McComas, M.R. 1968 report ISGS Circular 422 Champaign, Illinois Illinois State Geological Survey paper 1968 publication date none unknown McComas, M.R., K. C. Hinkley, and J.P. Kempton 1969 report ISGS Environmental Geology Notes 29 Champaign, Illinois Illinois State Geological Survey paper 1969 publication date none unknown Miller, J.R., R.C Berg, T.M.Johnson, and H.A. Wehrmann 1985 report Illinois IL Dept. of Nuclear Safety paper 1985 publication date none unknown Piskin, K, and R.E. Bergstrom 1975 report ISGS Circular 490 Champaign, Illinois Illinois State Geological Survey paper 1975 publication date none unknown Willman, H.B. 1967 map ISGS Map none Champaign, Illinois Illinois State Geological Survey 500000 paper 1967 publication date none unknown Willman, H.B. and J.C. Frye 1970 report ISGS Bulletin 94 Champaign, Illinois Illinois State Geological Survey paper 1970 publication date none unknown: Willman H. B., E. Atherton, T. C., Buschbach, C. Collinson, J.C. Frye, M. E. Hopkins, J. A. Lineback and J. A. Simon 1975 report ISGS Bulletin 95 Champaign, Illinois Illinois State Geological Survey paper 1975 publication date none unknown Willman, H.B. and D.R. Kolata 1978 report ISGS Circular 502 Champaign, Illinois Illinois State Geological Survey paper 1978 publication date none unknown Berg, R.C. and M.R. Greenpool 1994 map ISGS Map unknown Champaign, Illinois Illinois State Geological Survey paper 1994 publication date none unknown Berg, R.C. and M.R. Greenpool 1995 1.0 map ISGS GIS database ps20 Champaign, Illinois Illinois State Geological Survey GIS data set 1995 publication date none All data in stack-st that falls within the 1 x 2 degree Paducah quadrangle. Illinois State Geological Survey unknown 1.0 map ISGS GIS database stack1 Champaign, Illinois Illinois State Geological Survey GIS data set unknown publication date none All data in stack-st corresponding with plate 1 of the hard-copy map set. Illinois State Geological Survey unknown 1.0 map ISGS GIS database stack2 Champaign, Illinois Illinois State Geological Survey GIS data set unknown publication date none All data in stack-st corresponding with plate 2 of the hard-copy map set. Illinois State Geological Survey unknown 1.0 map ISGS GIS database stack3 Champaign, Illinois Illinois State Geological Survey GIS data set unknown publication date none All data in stack-st corresponding with plate 3 of the hard-copy map set. Illinois State Geological Survey unknown 1.0 map ISGS GIS database stack4 Champaign, Illinois Illinois State Geological Survey GIS data set unknown publication date none All data in stack-st corresponding with plate 4 of the hard-copy map set except that contributed by the Paducah Stack Map (ps20). This coverage was created in Nov. & Dec, 1994 by appending the four coverages stack1, stack2, stack3, and stack4, which represent the four plates of the published stack-unit map. Prior to being joined, the coverages underwent QA/QC review in which several inconsistencies between the published and automated coverages were revealed. These inconsistencies led to a significant revision of the digital product. Also, the state boundary has been updated with detailed data from the ISGS Illimap database. A notable result of this update was that parts of the northern and northeastern boundaries of the state were shifted south and west up to 1500 feet. This is due to (1) the original northern boundary on STACK1 being digitized as a straight line, while the updated boundary is the more accurate latitudinal arc segment; and (2) the coastline of the greater Chicago area being better represented on the updated boundary. Specifically, the boundaries were moved: approx. 300 ft. south at the NW and NE corners of the state, and approx. 1500 ft. south at the center point of the northern boundary, and; from 0 to approx. 1500 ft. west in the Chicago shoreline vicinity. Note that no rubbersheeting took place, so any inconsistencies introduced by this operation are strictly localized to the boundary areas. Subsequent updates: 2-17-95 Clark Co. area was updated with more recent data. 3-27-95 Made approx. 30 label updates to coverage. Revisions made to data: Prior to the processing of 1994, no revision numbers had been assigned to this coverage. Thus, the original coverages will be arbitrarily assigned revision number 1 and this updated version will be revision number 2. 19941020 to 19950327 The data were minimally reviewed in June, 1998. As a result, tics were replaced, COVER-ID values were recalculated to be unique, and an empty annotation feature class was dropped. The updated data set is edition 2.1. 19980617 19980617 Source coverage (stack-st) 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. 20040422 Vector G-polygon 5115 0.000001 0.000001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 IL_Stack_Units_To_15m_Py FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. MS STACK_UNIT MS1 MS2 MS3 MS4 MS5 UNIT1 QUAL1 UNIT2 QUAL2 UNIT3 QUAL3 UNIT4 QUAL4 UNIT5 QUAL5 Attribute items are in typical feature class format. Those requiring further explanation are: STACK-UNIT The STACK-UNIT item is a 15 digit numeric code that describes up to five geologic units present, their order of occurrence, and general thickness and depth. It is directly related to item MS in that MS is an alphanumeric designator that represents the same information as STACK-UNIT. STACK-UNIT consists of ten concatenated (redefined) items called (and in this order) UNIT1, QUAL1, UNIT2, QUAL2, UNIT3, QUAL3, UNIT4, QUAL4, UNIT5, QUAL5. UNITx (where x is 1, 2, 3, 4, or 5) is a 2 digit field unit name (see the table below). QUALx is a qualifier for each UNITx, giving thickness, depth and continuity information for the corresponding UNITx. For example, QUAL1 contains a code that gives descriptive information for UNIT1. UNIT1 is the uppermost unit, UNIT5 is the lowermost unit. TABLE OF ITEM RELATIONSHIPS UNITx MSx Corresponding Geologic Unit (MAP-SYMBOL) (nonlithified and semilithified materials) 1 A a* Cahokia Alluvium 2 Y y* Peyton Colluvium 3 B b* Richland Loess 4 C c* Peoria and Roxana Loess 5 D d* Parkland Sand 6 E e* Grayslake Peat 7 F f* Equality Formation, Carmi Member 8 G g* Equality Formation, Dolton Member 9 H h* Henry Formation 10 I i* Wedron Formation, silty and clayey diamictons 11 J j* Wedron Formation, loamy and sandy diamictons 12 K Sand and gravel within Wedron Formation: 12 k* within 6 m (19.7 ft.) of surface 26 z* between 6-15 m (19.7-49.3 ft.) of surface 13 L l* Winnebago Formation, mainly sandy diamictons 14 M Sand and gravel within Winnebago Formation: 14 m* within 6 m (19.7 ft.) of surface 26 z* between 6-15 m (19.7-49.3 ft.) of surface 15 N n* Teneriffe Silt 16 O o* Pearl Formation (includes Hagarstown Member) 17 P p* Glasford Formation, silty and clayey diamictons 18 Q q* Glasford Formation, loamy and sandy diamictons 19 R Sand and gravel within Glasford Formation 19 r* within 6 m (19.7 ft.) of surface 26 z* between 6-15 m (19.7-49.3 ft.) of surface 22 U u* Wolf Creek Formation (mainly diamictons) 23 V v* Mounds gravel and related units 24 W w* Cretaceous sediments, silts, sands, etc. 25 X Surface mines/man-made land (lithified materials) 41 1 1* Pennsylvanian rocks, mainly shales 42 2 2* Pennsylvanian rocks, mainly sandstones 43 3 3* Mississippian rocks, mainly shales 44 4 4* Mississippian rocks, mainly limestones, some sandstones 45 5 5* Silurian and some Devonian rocks, mainly dolomite 46 6 6* Ordovician rocks, mainly shale (Maquoketa Group) 47 7 7* Ordovician and Cambrian rocks, mainly dolomite, some sandstone other 98 water body of water QUALx 1 Drift unit > 6m thick, continuous throughout map area 2 Drift unit > 6m thick, locally less than 6m thick 3 Drift unit < 6m thick, continuous throughout map area 4 Drift unit < 6m thick, not continuous throughout map area 6 Bedrock unit present between 6 and 15 meters below surface 7 Bedrock unit not present continuously between 6 and 15 meters below surface; locally present at or just below 15 meters 8 Bedrock unit present within 6 meters of surface 9 Bedrock unit not present continuously above 6 meters below surface; but then is present between 6-15 meters MS Item MS is the map symbol for each polygon. It is an alphanumeric character set that describes up to five geologic units present, their order occurrence, and general thickness and depth. Item MS is directly related to item STACK-UNIT in that STACK-UNIT is a strictly numeric designator that represents the same information as item MS. MS consists of five concatenate (redefined) items called MS1, MS2, MS3, MS4, MS5. Each redefined MSx (where x is 1, 2, 3, 4, 5) item represents a single geologic unit, MS1 being the uppermost and MS5 being the lowermost. Uppercase letters indicate nonlithified a semilithified units greater than 6m (19.7 ft.) thick. Lowercase letters accompanied by asterisk indicate nonlithified and semilithified units less than 6m (19.7 ft.) thick. Numbers unaccompanied by an asterisk indicate lithified units where the top occurs between depths of 6-15m (19.7-49.3 ft.) below ground surface. Numbers accompanied by an asterisk indicate lithified units where the top occurs between depths of 0-6m (0-19.7 ft.) below ground surface. Some units are of varying thickness; this is represented by parentheses. An uppercase letter enclosed by parentheses indicates the unit is continuous throughout the map area but less than 6m thick in some areas. If the unit is lowermost, it may not be present above the 15m depth, but generally lies at just below 15m. A lowercase letter (with asterisk) enclosed by parentheses indicates the unit is not continuous throughout the map area. If the unit is lowermost it may not be present above the 15m depth, but generally lies at or just below 15m. A number (without asterisk) enclosed by parentheses indicates the unit may not be present above the 15m depth, but generally lies at or just below that depth. A number (with asterisk) enclosed by parentheses indicates the unit may not be continuous in the map area within 6m of surface, but is present between depths of 6-15m over a portion of the map area. Refer to the table above for the relationship between MS, STACK-UNIT, and name of the corresponding geologic unit. none Illinois State Geological Survey, Quaternary Geology Section mailing and physical address

615 East Peabody Drive

Champaign Illinois 61820 USA 217-333-4747 217-785-0211 isgs@isgs.uiuc.edu 8:00 a.m. - 4:30 p.m., Monday - Friday, U.S. Central Time The Illinois Department of Natural Resources (DNR) provides these geographic data "as is." DNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. DNR further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of DNR, no warranty, expressed or implied, is made by DNR regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the DNR have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by DNR. The data are intended for use with GIS software. The ISGS uses ESRI ArcGIS software, however, the ESRI shapefile format can be imported into many different GIS software packages. It is expected that customers who order this data have the technical expertise to use GIS software. The ISGS does not provide software support of any kind. 20060906 Please refer to the distribution information. FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time None. None. http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile