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 March 2004 edition 1.0 of the data set was transitioned to storage in an Oracle RDBMS using the ArcSDE geodatabase model. The result (this version) is designated Edition 20040331.
Links to these are 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, email@example.com. License fees and a license agreement may be required, depending on the proposed usage.
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.
TIC # N. Latitude (degrees) W. Longitude (degree)
06 ~ 37 91 51 37 90 53 ~ 37 88 20 ~ 42 91 23 ~ 42 88 26 41 91 29 41 88 32 40 91 35 40 88 38 39 91 41 39 88 45 38 90 47 38 88
Note: a ( ~ ) tilde indicates the primary tics used for the statewide map.
The features were imported into the ISGS SDE enterprise database following steps outlined in ISGS procedure GISDB_0009.
As the word NUMBER is a reserved word in Oracle, the field NUMBER was renamed to NUM.
GNTYPE - General structural type 1 - plunging anticline or anticlinal nose 2 - doubly plunging anticline 3 - asymmetrical anticline 4 - monocline 5 - syncline 6 - anticline (unspecified type)
GEOHORIZON and GEOHORIZON2 indicate the names of the geologic formation on which the feature is mapped. The ISGS Geologic Formation Numbering Code, a unique four digit number, was used to indicate these designations. If no horizon is indicated a code of 9999 is entered, meaning that the feature was mapped at the surface. In some cases there is more than one geologic formation associated with a mapped structural feature; in this case the GEOHORIZON2 field is used to indicate the additional geologic formation code number.
Code from Values for Bull. Geologic GEOHORIZON and 100 Description GEOHORIZON2 ----- ----------- -------------- HC top of Herrin Coal Member (#6) 2660 SC top of Springfield Coal Member (#5) 2790 CC top of Colchester Coal Member (#2) 3020 BC top of Beach Creek (Barlow) Limestone 4350 YT top of Yankeetown Sandstone 4480 SG top of St. Genevieve Limestone 5060 KE top of Keokuk Limestone 5350 NA base of New Albany Shale 5480 SL top of Silurian System 6700 GL top of Galena Group 7550 GW top of Glenwood Formation 8170 SP top of St. Peter Sandstone 8330 FR top of Franconia Formation 8660 IG top of Ironton/Galesville Sandstone 8690 EC top of Lightsville sand, in EauClaire Formation 8760 MS top of Mt. Simon Sandstone 8810 PC top of Precambrian (Age) 9200
NAME - the name of the structure
NUM - The item NUM is an unique value assigned to each member of a GNTYPE. For example, the Aden Anticline is feature number 1 of the Anticline general type, while Birkbeck Syncline is feature number 1 of the Syncline general type. Thus the combination of GNTYPE and NUMBER can be used to uniquely identify any feature. The relationship of NAME and NUM is shown in the following table.
NAME NUM ------------------------------------------- ------ Aden Anticline 1 Ancona Anticline 2 Ashton Anticline 3 Assumption Anticline 4 Astoria Anticline 5 Aurora Syncline 48 Ayers Anticline 7 Bardolph Anticline 9 Battle Ford Syncline 49 Bay Creek Syncline 50 Benton Anticline 12 Birkbeck Syncline 1 Black Jack Syncline 2 Bogota-Rinard Syncline 3 Boyd Anticline 14 Bremen Anticline 15 Brereton Anticline 16 Bridgeport Anticline 132 Brushy Anticline 17 Bryant Syncline 4 Bushnell Syncline 5 Campbell Hill Anticline 20 Canton Syncline 6 Charleston Monocline 6 Centralia Anticline 26 Clay City Anticline 27 Clinton Syncline 7 Colfax Syncline 8 Colmar Anticline 28 Columbia Syncline 9 Cooks Mills Anticline 29 Cooksville Anticline 123 Cordes Anticline 30 Cottage Anticline 31 Cresent City Anticline 122 Dahlgren Anticline 32 Divide Anticline 138 Downs Anticline 35 Du Quoin Monocline (east branch) 7 Du Quoin Monocline (main branch)(N) 8 Du Quoin Monocline (main branch)(S) 1 Du Quoin Monocline (main branch)(central) 9 Eagle Valley Syncline (Fluorspar Area) 10 Edgar Monocline 4 Elkton Anticline 140 Elmwood Syncline 12 Fairman Anticline 38 Fairview Syncline 13 Farmington Anticline 40 Fishhook Anticline 41 Galena Junction Syncline 14 Galena Syncline 15 Gilead Anticline 43 Goldengate Anticline 45 Graham-Ginte Syncline 16 Hardin Anticline 139 Harrison Creek Anticline 47 Herscher Anticline (S) 120 Herscher-Northwest Anticline 121 Hume Anticline 125 Iola Anticline 137 Irvington Anticline 141 Kenner Anticline 127 Kincaid Anticline 136 King Anticline 53 Leaf River Anticline 55 Lincoln Anticline 57 Littleton Anticline 58 Louden Anticline 59 Marshall-Sidell Syncline 22 Mattoon Anticline 65 McCormick Anticline 66 Media Anticline 67 Meppen Syncline 23 Millbrig Syncline 24 Minick Anticline 69 Monroe City Syncline 25 Murdock Syncline 26 New Burnside Anticline 71 Nilwood Anticline 72 Nutwood Anticline 74 Oregon Anticline 80 Osman Monocline 5 Otter Creek Syncline 30 Patoka Anticline 83 Pecatonica Anticline 133 Peru Monocline 3 Pinckneyville Anticline 86 Pittsburg Anticline 87 Pittsfield Anticline 88 Polo Syncline 32 Portage Syncline 33 Pottsville Syncline 34 Ripley Syncline 36 Salem Anticline 94 Saratoga Anticline 142 Sciota Anticline 96 Sesser Anticline 97 Seville Anticline 98 Smallpox Creek Syncline 39 St. David Anticline 92 Table Grove Syncline 43 Thebes Anticline 107 Tolu Arch (Anticline) (Hicks Dome) 143 Troy-Brussels Syncline 44 Tuscola Anticline 109 Uptons Cave Syncline 45 Valmeyer Anticline 110 Vergennes Anticline 111 Versailles Anticline 112 Vinegar Hill Syncline 46 Waterloo-Dupo Anticline 116 Woburn Anticline 118 unnamed Anticline 134 unnamed Anticline 135 unnamed Anticline 131 unnamed Anticline 126 unnamed Monocline (Bodenschatz-Lick Fault) 10 unnamed Monocline (Ste. Genevieve Fault) 11
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Illinois Natural Resources Geospatial Data ClearinghouseGenerated by mp version 2.8.25 on Thu Apr 02 09:54:13 2009