The Educational Extension Section of the Geological Survey conducts six
field trips each year, in various parts of the state, for teachers,
students, and laymen. It also assembles and distributes rock and mineral
collections for Illinois educational groups, gives lectures, prepares
exhibits, and identifies rocks and minerals for the public.
Educational Extension publications, such as this book, are simplified
discussions of geological subjects. Available for 25 cents each, these
include:
Educational Series 4: Guide for Beginning Fossil Hunters, by Charles
W. Collinson.
Educational Series 5: Guide to Rocks and Minerals of Illinois.
Educational Series 6: Field Book of Pennsylvanian Plant Fossils of
Illinois, by Charles Collinson and Romayne Skartvedt.
Many technical discussions of the various phases of Illinois geology
also are published by the Geological Survey. Regional reports on the
geology and mineral resources of some areas are available in many school
and public libraries or they may be purchased from the Survey. Some of
the regional reports include:
Beardstown, Glasford, Havana, and Vermont Quadrangles, Bulletin 82,
$1.00.
Buda Quadrangle, Circular 275, no charge.
Carlinville Quadrangle, Bulletin 77, $1.00
Chicago Region, Bulletin 65, Part 1, 50 cents.
Marseilles, Ottawa, and Streator Quadrangles, Bulletin 66, $1.00.
“Mineral Production in Illinois in 1959,” Circular 300 (no charge), is
one of a series of annual economic summaries. “Caves of Illinois,”
Report of Investigations 215, price 50 cents, will be available by
September 1961.
Illinois State Geological Survey Educational Series 7
24 pages, 1 plate, 12 figures, 1961
[Illustration: Illinois State Geological Survey, Urbana Educational
Series 7—Plate 1—North]
[Illustration: Illinois State Geological Survey, Urbana Educational
Series 7—Plate 1—Central]
[Illustration: Illinois State Geological Survey, Urbana Educational
Series 7—Plate 1—South]
GEOLOGIC MAP OF ILLINOIS
showing
BEDROCK BELOW
THE GLACIAL DRIFT
1961
KEY
T Tertiary (Pliocene omitted)
K Cretaceous
P² Pennsylvanian (Above No. 6 Coal)
P¹ Pennsylvanian (Below No. 6 Coal)
P³ Pennsylvanian (Above No. 6 Coal)
M² Mississippian (Upper)
M¹ Mississippian (Middle and Lower)
D Devonian
SD Silurian and Devonian
S Silurian
O Ordovician
C Cambrian
F Fault
OSDM Complex faulted area
Physiographic base map by James A. Bier
Price, 25 cents
[Illustration: PENNSYLVANIAN COAL-BEARING ROCKS]