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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.
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