Bedrock geology of Valmeyer quadrangle, Monroe County, Illinois

              Illinois Geologic Quadrangle Map
IGQ Valmeyer-BG
Base map compiled by Illinois State Geological Survey from digital data (Raster Feature
Separates) provided by the United States Geological Survey. Compiled by photogrammetric
methods from imagery dated 1986. Field checked 1989. Revised from imagery dated 1993.
PLSS and survey control current as of 1989. Base map edited as of 1996. New Valmeyer
area compiled from digital orthophotos dated 2005.
North American Datum of 1983 (NAD 83)
Projection: Transverse Mercator
10,000-foot ticks: Illinois State Plane Coordinate system, west zone (Transverse Mercator)
1,000-meter ticks: Universal Transverse Mercator grid system, zone 15
Recommended citation:
Denny, F.B., R.J. Jacobson, and W.J. Nelson, 2009, Bedrock Geology of Valmeyer Quadran-gle,
Monroe County, Illinois: Illinois State Geological Survey, Illinois Geologic Quad-rangle
Map, IGQ Valmeyer-BG, 2 sheets, 1:24,000.
Geology based on field work by F. Brett Denny and Russel J. Jacobson, 2001–2002.
Digital cartography by Jane E.J. Domier, Steven M. Radil, and Alex J. Beata, Illinois State
Geological Survey.
This research was supported in part by the U.S. Geological Survey National Cooperative
Geologic Mapping Program (STATEMAP) under USGS award number 01HQAG0103. The
views and conclusions contained in this document are those of the authors and should not
be interpreted as necessarily representing the official policies, either expressed or implied,
of the U.S. Government.
The Illinois State Geological Survey and the University of Illinois make no guarantee,
expressed or implied, regarding the correctness of the interpretations presented in this
document and accept no liability for the consequences of decisions made by others on the
basis of the information presented here. The geologic interpretations are based on data
that may vary with respect to accuracy of geographic location, the type and quantity of
data available at each location, and the scientific and technical qualifications of the data
sources. Maps or cross sections in this document are not meant to be enlarged.
IGQ Valmeyer-BG Sheet 1 of 2
BEDROCK GEOLOGY OF VALMEYER QUADRANGLE
MONROE COUNTY, ILLINOIS
F. Brett Denny, Russell J. Jacobson, and W. John Nelson
2009
MAGNETIC NORTH
APPROXIMATE MEAN
DECLINATION, 2009
TRUE NORTH
/ ° 1 2
ROAD CLASSIFICATION
Primary highway,
hard surface
Secondary highway,
hard surface
Light-duty road, hard or
improved surface
Unimproved road
U.S. Route State Route
ADJOINING
QUADRANGLES
1 Maxville, MO
2 Oakville
3 Columbia
4 Herculaneum, MO
5 Waterloo
6 Festus, MO
7 Selma
8 Renault
BASE MAP CONTOUR INTERVAL 10 FEET
NATIONAL GEODETIC VERTICAL DATUM OF 1929
1 2 3
4 5
6 7 8
1000 0 1000 2000 3000 4000 5000 6000 7000 FEET
1 .5 0 1 KILOMETER
SCALE 1:24,000
1 1/ 2 0 1 MILE
© 2009 University of Illinois Board of Trustees. All rights reserved.
For permission information, contact the Illinois State Geological Survey.
For more information contact:
Institute of Natural Resource Sustainability
Illinois State Geological Survey
615 East Peabody Drive
Champaign, Illinois 61820-6964
(217) 244-2414
http://www.isgs.illinois.edu
Institute of Natural Resource Sustainability
William W. Shilts, Executive Director
ILLINOIS STATE GEOLOGICAL SURVEY
E. Donald McKay III, Interim Director
G
H
G
H
A A 
H
á
745
ª
e
40
SG
e
Æ
Note: Well and boring records are on file at the ISGS Geological
Records Unit and are available online from the ISGS Web site.
Symbols
Strike and dip of bedding; number
indicates degree of dip
Horizontal bedding
Vertical joints
Abandoned quarry
Drill Holes
from which subsurface data were obtained
Dry oil and gas test hole
Other boring
Boring with samples (S) or geophysical log (G).
Numeric label indicates total depth of boring in feet.
Line Symbols
dashed where inferred, dotted where concealed
Contact
Fault; ball and bar on downthrown side
Anticline
direction of plunge indicated by arrow
Syncline
Monocline
Line of cross section
Om
Ok
Mbk
Msl
Msm
Mfg
Mw
Odp
Oj
Burlington-Keokuk
Limestones
Salem Limestone
St. Louis Limestone
EXPLANATION
Mississippian
Ordovician
Cincinnatian
Valmeyeran and
Kinderhookian
Hannibal Shale and
Maquoketa Formation
Kimmswick Limestone
Warsaw Formation
Fern Glen Formation
and Chouteau Limestone
Unconformity
Unconformity
Decorah Formation and
Plattin Limestone
Joachim Dolomite
Mohawkian
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Valmeyer
A
A 
G G G G G G G G G
H H H H H H H H H
| | | | | | | | |
á á á á
"
M M M
G G G
G
H H H
H
| |
|
|
| |
|
| G G G G G G G
H H H H H H H
| | | | | | |
| | | | | | |
Monroe City Syncline
(trough surface)
Valmeyer Anticline
(crestal surface)
Valmeyer Anticline
(crestal surface)
JN JN JN
Æ
Æ
Æ
Æ
12
20
13
15
20
16
14
15
20
15
25
5
10
5
18 20
8
8
14
12
8
4
5
Quarries
e
e
ªS
ªS
ªS
ªS
e
ªS
ªGS
750
195
710
540
1642
565
345
625
700
Ok
Mfg
Ok
Mbk
Mw
Msm
Msl
Msl
Msm
Msm
Mbk
Mw
Msm
Mw
Msm
Msm
Msm
Msm
Msm
Msl Msl
Msl
Msl
Msl
Msl
Mw
Msl
Mw
Msl
Msl
Msl
Msl
Msl
Mfg
Mfg
Mfg
Msm
Om
Mfg
Msl
Ok
Ok
Msl
Msl
Msl
Msm
Msm
Msl
Msl
Msl
Msm
Msl
Mw
Mw
Mw
Msl
Msl
Mw
Mbk
Mbk
Mbk
Mbk
Mbk
Msm
Mbk
Mw
Mw
Mbk
Mbk
Mfg
Mfg
Mfg
Mfg
Om
Om
Om
Om
Ok
Ok
Odp
Odp
Odp
Mbk
Odp
Om
Msm
Odp
Odp
Odp
Oj
Ok
Ok
Ok
Ok
Om
Om