90°30'00"W 90°27'30"W 90°25'00"W 90°22'30"W R 5 E R 6 E 38°37'30"N D 38°37'30"N 0 e 5 60 e 6 0 r 0 19 20 21 22 23 65 24 600 19 C SURFICIAL MATERIAL GEOLOGIC MAP OF THE KIRKWOOD 7.5' QUADRANGLE Ql r 0 6 Ql 65 50

6 5 0 500 ST. LOUIS AND JEFFERSON COUNTIES, 0 650 0 650 0 Ql k T w 6 5 o m Qa 0 5 i l e 5 C 5 Ql r e e k £67 5 ¤ Frontenac 600 0 LADUE 5 0 50 0 R 650 5 5 5 60 0 5 6 0 0 00 0 6 600 Geology and Digital Compilation by Huntleigh 60 0 0 5 0 600 6 0 0 Ql 0 6 5 6 50 550

0 Bradley A. Mitchell 0 Qa «¬JJ k 6 0 Town and Country 0 0 0 0 5 6 650 0 5 5 5 5 600 5 500 5 600 0 0 0 0 5 R k 0 5 0 6 5 6 5 Pb 0 28 0 0

0 5 Ql 27 6 26 Ql 5 2012 0 0 65 Des Peres 6 0 25 0 0 0 Rock Hill 0 5 6 0 5 5 5 0 0 0 0 0 6 0 6 30

0 30 0 0 Warson Woods 29 0 6 0 6 60 50 5 0 29 0 6 OFM-12-615-GS

5 0 500 0 00 0 6 0 0 5 5 5 5 5 550 Ql 6

0 k

0 Pb Pb 0 5 6

5 5 R 00 R 5Ql 50 0 R 0 5 0 6 0 5 6 5 MISSOURI DEPARTMENT OF NATURAL RESOURCES 0 5 0 6 Ql 0 0 R Pb 0 0 0 5 5 0 5 550 6 6

0 Qa 0 DIVISION OF GEOLOGY AND LAND SURVEY 0 6 0 0 100 5 0 0 0 5 6 ¬ 0 « 0 550 5 6 0 32 R 6

0 0 0 0 GEOLOGICAL SURVEY PROGRAM 0 5 5 34 0

6

Ql 0 0 65 0 0 0 0 0 0 6 5 36 32 5 6 0 0 0 100 6 33 6 5 0 «¬ 5 600 6 35 6 0 0 55 Ql 31 50 0 P.O. BOX 250, ROLLA MO 65402-0250 d 0 0 k n 45 5 5 4 Ql 0 6 a 5 r 50 6 0 G 4 G 0 l 6 a i z e 0 GLENDALE Qa 0 6 www.dnr.mo.gov/geology 4 50 50 0 0 50 60 50 0 5 6 5 0 0

5 5 573-368-2100 650 0 0 0 0 6 5 5 T 45 N 5 5 T 45 N 5 5 0 0 00 55 61 6 T 44 N 0 0 ¤£ T 44 N 5 5 0 60 0 500 0 6 55 5 5 00 0 5 450 0 KIRKWOOD 5 0 6 THIS MAP WAS PRODUCED UNDER A 5 0 R Qa 5 0 650 0 60 6 0 550 5 00 Ql 0 COOPERATIVE AGREEMENT WITH 0 0 0 0 0 Ql 5 5 6 550 55 5 5 0 Ql 38°35'00"N 0 38°35'00"N 60 0 50 0 5 5 5 5 270 6 THE GEOLOGICAL SURVEY 4 0 6 5 C 0 00 Ql 0 6 0 § 6 0 0 ¨¦ 0 r 3 550 65 0 R e 6 60 e 2 k Qa 650 0 G 60 450 r 0 a 55 0 v 550 5 o 0 500 6 i 55 6 s Pb 650 00 5 600 Permission must be obtained to visit privately owned land 5 55 0 0 5 Oakland 0 5 0 0 0 5 0 0 0 60 50 Ozark View 0 5 00 6 0 0 0 60 50 5 Ql 6 50 50 650 0 5 PHYSIOGRAPHY 00 6 0 00 55 8 R 600

0

45 Qa 5 0 6

5 The Kirkwood quadrangle lies within the Dissected Till Plains Section of the Central Lowland Province of the Interior 5 7 8 Barretts 0 00 5 0 6 0 5 6 5 Plains Physiographic Division. The lowest recorded elevation is 387 feet mean sea level (msl) and occurs within the 0 5 5 00 k 0 0 Osage Hills

5 0 C 5 60 0 5 Ql 00 R 9 6 6 r Woodbine Heights e Meramec River valley in the southeast of the quadrangle. The highest elevation on the quadrangle occurs in the 600 0 6 600 65 0 e 12 600 0 Ql k 600 11 0 covered uplands near the northern boundary of the quadrangle and is greater than 680 feet msl. Total relief on the 5 Keyes Summit 5 55 10 0 Pb ¨¦§44 Windsor Springs 650 Ql Kirkwood quadrangle is approximately 300 feet. 0 Twin Oaks R 5 4 500 5 0

50 5 6 500

0 Meacham Park

R 5 550 500 6 7 00 0 Ql 6 141 5 0 6 «¬ R 55 k Qtd 450 GEOLOGICAL OVERVIEW 0 8 5 0 4 50 5 0 6 600 5 0 0 5 0 0 5 4 40 R Crestwood 0 E 500 0 V Qa R I 50 The Kirkwood quadrangle is underlain primarily by deposits of Paleozoic and shale. The upland area in the 4 5 0

0 5 0

0 5

18 5 6 Valley Park «¬366 northeast of the quadrangle has exposures of -age Cherokee and Marmaton Groups which are cyclic 0 45 R 600 16 Pb R Desmoinesian Series deposits of shale, limestone, and coal. The -age St. Louis, Salem, and C 0 Pb M E 50 650 R A M E Warsaw Formations underlie much of the southwest of the quadrangle except for areas where the Meramec River and 0 15 50 13 k Qtd 50 5 0 its tributaries have incised into the Mississippian-age Burlington-Keokuk Formation. F 0 14 18 5 ish 40 5 po Qtd Qa Pb t C 0 r 5 17 6 6 Pb 00 600

6 0 0 17 4 Ql 00 00 A' 5 4 00 Qa

0 DESCRIPTION OF MAP UNITS 50 Pb 5 Qtd Qtd 4 5 R 0 0 50 Qa Qa 5 0 R 50 50 5 0 ¤£ 0 6 ¨¦§44 QUATERNARY SILT-CAPPED ALLUVIUM – This unit has been deposited by the Meramec River and its tributaries. 6 38°32'30"N 50 38°32'30"N Qslt Pb R Sappington The approximate upper 15 feet of these deposits are composed predominantly of silt with variable amounts of clay Peerless Park 0 5 450 5 0 Qa 5 Ql 5 Sunset Hills and organic material. The material residing below the silt is predominantly sand and gravel to the top of bedrock. Qa 0 k 5 6 4 5 0 5 500 5 5 55 0 0 0 21 0 The thickness of this unit ranges from less than 10 feet where the floodplain transitions to uplands to more than 100 20 550 22 24 0 23 450 60 0 550 0 feet where the Meramec River has incised the Paleozoic bedrock. The water table is approximately 10 to 30 feet 0 0 6 20 0

0 6

5 5 0 0 0 Pb 55 0 0

5 0 5 5 19 below ground surface, resulting in an interval of saturated sand and gravel more than 50 feet thick. This unit is

R 5 0

R Qtd 0

5 50 0 5 R

500 0 0 included in the cross sections as Quaternary silt-capped alluvium. 0 5 4 5

0 550 65 0 0 5 R 4 270 § 550 5 ¨¦ 5 QUATERNARY LOESS – This unit is a wind-blown deposit of silt and clayey silt with occasional pockets of clay, 0 5 Ql 00 6 500 0 5 Qtd sand and gravel. The unit is composed of two separate loess layers, the Roxana below and the Peoria above 0 0 R 0 6 5 50 50 0 4 55 5 27 26 (Goodfield, 1965). The total thickness of the two units may reach 100 feet. The Roxana is higher in clay content and 0 29 0 5 65 26 5 0

6 0 may have a paleosol developed in the upper few feet. The contact between the two units forms a potential slide plane 0 5 5 30 50 00 28 5 6 0 0 00 Pb 0 45 in areas of high topographic relief. The loess overlies Pennsylvanian-age bedrock comprised of limestone and shale

A 5 25 6 0 5

0 0 0 Ql 30 55 550 141 R 0 29 creating two unique environments. Where the loess is thin, the limestone may be karstic. Where the underlying unit R «¬ 60 550 30 6 Qa «¬ 0 5 is predominantly shale, water will perch, destabilizing the contact zone. Where the loess rests upon shale, the slide 0 50

4 Qa 5 potential is increased. 5 0 k 0 00 5 0 6 R 0 550 6 500 50 Qa 5 60 27 500 0 QUATERNARY TERRACE DEPOSIT – The terrace deposits in the quadrangle are slightly different than previously 5 4 k 0 5 5 0 0 0 Qtd 6 Qtd 0 Pb R 60 mapped terrace deposits (Brill, 1991; Harrison, 1997; and Goodfield, 1965). All were deposited during fluvial events, R 00 0 5 0 R 5 0 5 600 6 Fenton leaving the terrace above low flow stage of the river. After high stage flow returned to normal, low lying areas within 34 Pb 450

0 0 the terrace were filled with organic clay material. This zone has a very low shear wave velocity and underlies many 0 60 0 5 4 0 00 0 6 550 0 550 5 0 550 6 5 Qa k types of infrastructure. 0 00 Qa 55 6

4 00 M 5 6 450 0 E 500 Qa R A 600 Pb Qa Ql 0 M KARST – These areas have high concentrations of sinkholes, caves and other karstic features due to the solutional 32 60 Pb E Qtd 31 33 0 Pb C 55 k

0 Pb R

0 weathering of the Mississippian and Pennsylvainian-age limestone underlying this area. These areas are typically 600 5 500 Qa 500 5 40 50 0 31 found in the upland regions of the quadrangle.

0 600 30 5 34 600 6 «¬ R R «¬21 R 0 141 0 «¬ R I V E R 550 5 55 6 0 4 5 5 RESIDUUM – The areas of residual material are found on the slope and toe slope of high relief areas. The content is 0 Pb 0 R 60 550 0 550 R 0 Qa R 5 5 4 0 T 44 N 4 50 5 50 T 44 N dependent on the bedrock parent material but typically has a high clay content with fragments of parent material. ST LOUIS CO 0 60 50 0 ST LOUIS CO T 43 N JEFFERSON CO 0 5 50 500 6 T 43 N 6 5 4 JEFFERSON CO 00 38°30'00"N 38°30'00"N R 5 E R 6 E 90°30'00"W 90°27'30"W 90°25'00"W 90°22'30"W PALEOZOIC BEDROCK – The exposures in this quadrangle are typically found in areas of high topographic relief. Produced by the Missouri Department of Natural Resources, MISSOURI Pb ^ SCALE 1:24,000 Road and Contour Symbology Division of Geology and Land Survey, Geological Survey Program. MN 1 0.5 0 Kilometers 1 2 70 Funded by the United States Geological Survey, National Earthquake GN Interstate Highways ...... §¨¦ Hazards Reduction Program, Award # G11AP20174, 2011. 1000 500 0 Meters 1000 2000 Missouri Highways ...... N Topography was derived from a USGS 10 meter Digital Elevation Model 1° 36’ 1° A A' Line locates the placement of the cross section with end line symbols. 18 Mils 1 0.5 0 1 Light Duty Roads...... using contouring software. Features were edited to the USGS, 28 Mils Railroad...... 38090-E4-TF-024, 1993, Kirkwood 7.5' quadrangle and digital aerial Miles UTM and 1994 Magnetic North Elevation Contour...... 10 Public Land Survey System including Spanish land grants. photography from 2007 and 2009. Field checked in 2012. 1000 500 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Declination at Center of Sheet Index Contour...... 50 Universal Transverse Mercator (UTM), Zone 15. 2012 Magnetic North Declination North American Datum 1983 (NAD 83). ~ 0°-59' East, Field Strength: 52777.5 nT QUADRANGLE Contour Interval...... 10 Feet Feet LOCATION

BIBLIOGRAPHY A A' Brill, K.G., 1991, Geologic Map of St. Louis City and County, Missouri; Division of Geology and Land Survey, 210 700 Well Hwy 50 Missouri Department of Natural Resources, OFM-91-0259, scale 1:62,500. Well Well Goodfield, A.G., 1965, and surficial geology of the City of St. Louis and the adjacent St. Louis County, Ql Ql Well R Well R Missouri; unpublished Ph.D. dissertation, University of Illinois, Urbana, IL, 206p., 6 pl. 180 Well Well Well Well Well R Interstate 270 600

Hwy 141 R Ql E s Ql r R l e e R R t R Pb v Harrison, R.W., 1997, Bedrock Geologic Map of the St. Louis 30' x 60' Quadrangle, Missouri and Illinois; U.S. e R a t M i Geological Survey, Miscellaneous Investigations Series Map I-2533, scale 1:100,000. Pb Well R o n n i

R 150 Pb 500 i

n R Pb Pb n o Lutzen, E.E., and Rockaway, J.D., 1971, Engineering Geology of St. Louis County, Missouri; Missouri Geological i F

t Well Well Meramec River e a Survey and Water Resources, 23p., 1pl. e v t e

l Pb Pb E 120 Qtd Qtd Qtd 400 Missouri Department of Natural Resources, 2007, Well Logs, Wells Certified, Bedrock, Roads, IMOP, in Missouri Qslt R Pb Pb Environmental Geology Atlas (MEGA); Division of Geology and Land Survey, Missouri Department of Natural Resources. Pb 90 300 Thompson, T. L., 1995, The stratigraphic succession in Missouri, v. 40 rev.; Division of Geology and Land Survey, Vertical Exageration = 20X Missouri Department of Natural Resources, 190 p. Horizontal Scale = 1:24,000 Pb Paleozoic Bedrock Qslt Quaternary Silt-Capped Alluvium Ql Quaternary Loess Qtd Quaternary Terrace Lake Deposit Roads and water bodies are not to scale Williams, R.A., Odum, J.K., Stephenson, W.J., and Herrmann, R.B., 2007, Shallow P- and S-wave velocities in the R Residuum Inferred Contact Water Feature St. Louis region, Missouri-Illinois: Earthquake Spectra, v. 23, no. 3, 711-726.

SURFICIAL MATERIAL THICKNESS TOP OF BEDROCK DATA POINT LOCATION

6 ! ! ! 4 ! 0 0 2 ! 6 Ql 20 ! 6 4 ! 0 40 8 Ql ! 2 60 0 0 0 2 ! ! !! ! ! ! 520 5 ! ! ! 00 ! ! ! 5 ! !! 20 ! ! 40 540 ! 56 620 0 !! !! ! ! Ql 0 5 ! ! 0 80 ! !! 2 4 ! 0 6 ! Qa ! ! 6 ! 4 Ql ! !! Qa 2 4 0 !! !!! 0 !! ! ! ! 0 0 8 !! ! ! 4 !!! ! 4 !! !! ! ! !! ! 0 Ql Ql 48 580 40 Qa ! ! ! ! ! ! ! ! ! ! Ql 2 6 0 560 0 ! ! 0 0 ! ! 0 ! 0 ! Qa ! ! 6 6 ! ! 4 R !!! ! !! 0 Ql ! ! ! 0 4 ! ! 60 56 0 ! !!!! 5

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0 4 ! 2 0 ! 0 580 !! 4 5 ! ! ! !! 0 ! ! ! ! ! Ql 8 ! !! 4 560 5 ! !! 2 0 5 Qa 0 R 0 6 5 Ql 0 60 !! 380 5 ! ! 4 Qtd ! 0 !! R ! 36 4 6 0 0 6 ! 2 0 ! ! 0 0 0 0 0 R !! !! 0 6 2 ! ! ! ! 1 0 0 3 ! ! 0 0 ! ! 2 0 !! 8 8 4 ! 3 3 Qtd Qa ! 0 ! !! ! ! 4 ! 3 ! 2 5 ! 0 4 ! 0 0 ! ! 8 !! ! 3 ! !! R ! !! ! !! 0 !! R 60 0 4 !! ! 42 4 0 !! Qa ! Qtd !! 0 !! ! 2 6 ! ! ! 0 ! 0 ! ! 4 460 ! 0 ! 0 ! Ql 4 ! 290 ! ! ! 0 ! ! X ! 40 0 ! ! 5 5 R 540 4 R 0 ! R 20 ! 0 4 600 ! ! ! ! !! 2 60 8 ! ! !! 5 5 ! ! 0 ! ! ! ! ! !! ! ! ! ! !!! ! ! ! ! ! !! ! ! ! !! 20 ! ! Qa R ! !!!!! ! !! 2 !! 0 !! ! ! !! 40 !! 0 5 ! 0 3 0 8 5 R !!! 0 5 0 0 2 20 2 5 0 ! 6 360 ! ! !

0 ! 6 0 ! ! !

0 8 3 ! 4 ! ! 5 ! 5 5 ! 6 8 0 0 0 0 6 R ! 40 0 0 ! 4 0 6 480 ! ! ! R 4 0 ! ! ! ! 0 40 6 5 500 ! R Scale = 1:52,800 Digital Elevation Model Scale = 1:52,800 Digital Elevation Model Scale = 1:52,800 Data Point Distribution Contour Interval = 20 ft. Contour Interval = 20 ft. Feet Meters Feet Meters 20 20 X Vs NA 2009 m/s High: 682 High: 208 High: 682 High: 208 ! Missouri Geotechnical DGLS ! Bedrock Borings DGLS Low: 387 Low: 118 Low: 387 Low: 118