Grundy County

Coal Mines - Map and directory of coal mines
Coal Resources - Coal elevation, depth, and thickness maps
Coal Logs - Non-confidential coal logs from the Coal Section's stratigraphic database

Coal Mines
The map below displays quadrangle boundaries in Grundy County for which the ISGS has completed studies.
How To Use This Map First locate your area of interest on the map. If this area is located within a quadrangle displayed on the map, please see the quadrangle study for a more detailed description of coal mines. If a quadrangle study is not available for your area of interest, please see the county map and directory. Scroll down to find links to the quadrangle studies and county maps. Quadrangle Studies
Quadrangle Maps and Directories located in Grundy County
These selected 7.5-minute quadrangle maps are available online as PDF versions and show active and abandoned mines and their known extent on a topographic map base which includes township, range, and section lines and surface features such as roads, towns, lakes, and rivers. The mines are color-coded by mining method and the relative precision and completeness of the source map used for the mine boundary are indicated. Scale 1:24,000. Accompanying each map is a directory that gives a brief history of mining on the quadrangle and lists for each mine the location of mine opening and tipples; the name, thickness, and depth of seams mined; production history; geologic problems reported; company names; mine names and numbers; type of mine; years operated; coal seam mined; and mine location.
Quadrangle PDFs
Coal City Quadrangle Map and Directory Gardner Quandrangle Map and Directory Kinsman Quadrangle Map and Directory Lisbon Quadrangle Map and Directory Mazon Quadrangle Map and Directory Minooka Quadrangle Map and Directory Morris Quandrangle Map and Directory Seneca Quadrangle Map and Directory Stavanger Quadrangle Map and Directory
Grundy County Coal Map and Directory
This county map and accompanying directory, which provide basic information about the mines, represent the most comprehensive compilation of available data. The county maps also display quadrangle boundaries for which the ISGS has completed studies. Scale 1:100,000. PDF files.
Grundy County Mine Map	Grundy County Mine Directory

Coal Resources

Grundy County structural elevation, depth, thickness, sulfur, and chlorine maps. Scale 1:100,000. PDF files.

Elevation

Danville Coal Map Herrin Coal Map Springfield Coal Map   Colchester Coal Map     Depth Colchester Coal Map Danville Coal Map Herrin Coal Map     Springfield Coal Map       Thickness Danville Coal Map Herrin Coal Map Springfield Coal Map   Colchester Coal Map Sulfur Danville Coal Map Herrin Coal Map Springfield Coal Map Chlorine       Herrin Coal Map       On demand plots available for these maps! If you are unable to make your own large size plots from these PDF's we also offer an on demand plot for individual maps from our publication and sales office--for cost of the plot and handling. Please contact LeAnn Benner (benner@isgs.illinois.edu) for more information on purchasing plots (217-244-2415) and other details.

Coal Logs

Grundy County Coal Logs - PDF file generated 1/10/05

The .PDF file listed above contains non-confidential coal log descriptions from the Coal Section's stratigraphic database in the County listed.

Click here to download the raw .dbf files from which the entire stratigraphic database derives (if such files are what you really want; most users will only want and need the .PDF files).

Each coal log has a "header" element that contains location information, log type, log source and other information (see sample below).

Sample location: COUNTY: SALINE 7S - R 6E SECTION: 35 NWSE 330S 330W

This log is from a borehole located in Saline County, Township 7 South, Range 6 East, northwest quarter of the southeast quarter of section 35, 330 feet from the South section line, and 330 feet from the West section line.

Beneath the header is information on the geology for that data point. The Coal Section stratigraphic database from which this .PDF file derives is a multi-project database which contains drill hole and outcrop descriptions of Pennsylvanian stratigraphy in Illinois. Consequently, the level of detail and accuracy in the data and their interpretation vary, sometimes widely, with the geologist, project type, or original data source. Multiple descriptions of a particular location may be present. Note that both the coal stratigraphic database and this .PDF listing are only a subset of the total amount of data available from the ISGS Geologic Records Library archives, and reflect only coal-specific data and interpretations of past and present Coal Section geologists. They are not a comprehensive listing of all data that may be available from the ISGS.