Logan County

Coal Mines

The map below displays quadrangle boundaries in Logan County for which the ISGS has completed studies.

Quadrangle Maps and Directories located in Logan 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

Lincoln East Quadrangle Map and Directory
Lincoln West Quadrangle Map and Directory
Middletown Quadrangle Map and Directory
Broadwell Quadrangle Map and Directory
Mount Pulaski Quadrangle Map and Directory
Williamsville Quadrangle Map and Directory

Logan 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.

Coal Resources

Logan 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
Danville Coal Map	Herrin Coal Map		Springfield Coal Map
Colchester Coal Map
Thickness
Herrin Coal Map	Springfield Coal Map		Net Coal Thickness
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.uiuc.edu) for more information on purchasing plots (217-244-2415) and other details.

Logan 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.