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 T7S - R6E SECTION: 35 NW, SE, 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.
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