https://ir.uiowa.edu/igs_ofm/1002/thumbnail.jp

Bettis, E Arthur, III

Bunker, Bill J

Giglierano, James D

Howes, Mary R

Ludvigson, Greg A

English

Iowa Research Online

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SURFICIAL GEOLOGIC MATERIALS OF THE MARION QUADRANGLE, IOWA
0 1 2 Miles
Geological Survey Bureau
Open File Map Series 95-2
Prepared by
E. Arthur Bettis III
Greg A. Ludvigson
James D. Giglierano
Mary R. Howes
Bill J. Bunker
Energy and Geological Survey Division
Geological Survey Bureau
October 1995
Supported by the U.S. Geological Survey, Department of Interior,
under assistance Award No. 1434-94-A-1232, and Bluestem Solid Waste Agency, City
of Cedar Rapids City Engineer, Linn County Engineering, Linn County Planning and
Zoning, Linn County Regional Planning, and the cities of Hiawatha and Marion.
Iowa Department of Natural Resources
Larry J. Wilson, Director
ACKNOWLEDGMENTS
Recognized for direct contributions to the map’s production:  M.J. Bounk, D.L. Koch,
B.J. Witzke, R.D. Mandel, D.J. Quade, R.R. Rowden of the IDNR Geological Survey
Bureau, Iowa City office of the U.S. Geological Survey - Water Resources Division,
Iowa Department of Transportation, U.S. Department of Agriculture - Natural Resources
Conservation Service, Linn County Engineering, Bluestem Solid Waste Agency, Linn
County Planning and Zoning, R.E. Novotny Well Drilling Company, and landowners
who granted access for field studies.  Special thanks is extended to Rebecca Palmer,
Director of Linn County Planning and Zoning, for coordination with government
agencies in Linn County.
Description of Map Units
Unit Description
Holocene
Qds ALLUVIUM (DeForest Formation) -- One to three meters of massive to weakly stratified, grayish brown to
brown loam, silt loam, clay loam, or loamy sand overlying less than three meters of poorly to moderately well
sorted, massive to moderately well stratified, coarse to fine feldspathic quartz sand, pebbly sand, and gravel.
Unit also includes colluvial deposits derived from adjacent map units.  Seasonally high water tables occur in
this map unit.
Qdl ALLUVIUM (DeForest Formation) -- Two to four meters of massive to moderately well stratified loam, silt loam,
clay loam, or loamy sand overlying more than three meters of poorly to moderately well sorted, massive to well
stratified, coarse to fine feldspathic pebbly sand and gravel of the Noah Creek Formation.  Seasonally high
water tables occur in this map unit.
Qdb MUCK AND PEAT (DeForest Formation, Barton Member--new) -- One to six meters of black to brown muck,
peat, and other organic-rich deposits in fens.  Massive to well stratified at depth.  Overlies sand and gravel
and/or massive, fractured, loamy glacial till of the Wolf Creek or Alburnett formations.  High water tables occur
in this map unit.
Late Wisconsinan
Qn SAND AND GRAVEL SHALLOW TO ROCK (Noah Creek Formation) -- One to three meters of yellowish
brown , poorly to well sorted, massive to well stratified, coarse to fine feldspathic quartz sand, pebbly sand, and
gravel that overlies fractured Devonian carbonate bedrock.
Qpt LOESS AND INTERCALATED EOLIAN SAND (Peoria Silt) -Two to seven meters of yellowish brown to gray,
massive, jointed, calcareous or noncalcareous, silt loam and intercalated fine to medium, well sorted,
feldspathic quartz sand.  Grades downward to poorly to moderately well sorted, moderately to well stratified,
coarse to fine feldspathic quartz sand, loam, or silt loam alluvium, or in some places the eolian sediments a
clayey Farmdale/Sangamon Soil developed in alluvium.  These alluvial fills are beneath the Late Phase High
Terrace (no paleosol beneath the loess) and Early Phase High Terrace (paleosol beneath the loess) of the
Iowa/Cedar Basin.
Qps1 LOESS AND INTERCALATED EOLIAN SAND (Peoria Silt) - Five to ten meters of yellowish brown to gray,
massive, jointed, noncalcareous grading downward to calcareous silt loam and intercalated fine to medium,
well sorted, feldspathic quartz sand.  Sand is most abundant in lower part of eolian package.  Overlies
massive, jointed, loamy glacial till of the Wolf Creek or Alburnett formations with or without intervening clayey
Farmdale/Sangamon Paleosol.  Loess and sand are dominantly Cedar Valley source.
Qps2 EOLIAN SAND (Peoria Silt - sand facies) -- Five to fifteen meters of yellowish brown to gray, moderately to
well stratified noncalcareous or calcareous, fine to medium, well sorted, feldspathic quartz sand.  May contain
interbeds of yellowish brown to gray, massive, silt loam loess.  Overlies eroded, massive, jointed, loamy glacial
till or fractured Devonian-age carbonate bedrock.  Dominantly Cedar Valley source.
Qps3 LOESS SHALLOW TO GLACIAL TILL (Peoria Silt) -- Two to three meters of yellowish brown, massive,
noncalcareous silt loam and intercalated fine to medium, well sorted, feldspathic quartz sand.  Sand, if present,
occurs in lower part of unit.  Overlies 0.5 to 1.5 meters of pebbly loam erosion surface sediment which, in turn,
overlie eroded, massive, jointed, firm, loamy glacial till of the Wolf Creek or Alburnett formations.  Seasonally
high water table may occur in this map unit.
Qps4 LOESS SHALLOW TO SAND AND GRAVEL (Peoria Silt) -- One to two meters of yellowish brown, massive,
noncalcareous silt loam.  Overlies pebbly sand and gravel erosion surface sediment that is one to three meters
thick, which, in turn, overlies eroded massive, jointed, firm, loamy glacial till of the Wolf Creek or Alburnett
formations.  Seasonally high water table may occur in this map unit.
Qps5 EOLIAN SAND SHALLOW TO GLACIAL TILL (Peoria Silt - sand facies) -- Two to four meters of yellowish
brown, massive to well stratified, noncalcareous, fine to medium, well sorted feldspathic quartz sand.  Overlies
pebbly loam erosion surface sediment which, in turn, overlies eroded massive, jointed, firm, loamy glacial till of
the Wolf Creek or Alburnett formations
Qps6 EOLIAN SAND SHALLOW TO ROCK (Peoria Silt - sand facies) -- One to four meters of yellowish brown,
massive to well stratified, noncalcareous, fine to medium, well sorted feldspathic quartz sand.  May overlie one
to two meters of loam erosion surface sediment and/or less than two meters of eroded, massive, jointed, firm
loamy glacial till of the Wolf Creek or Alburnett formations.  Fractured Devonian carbonate bedrock is less than
five meters below the land surface.
Qwa1 SAND AND GRAVEL SHALLOW TO TILL (Unnamed erosion surface sediment) -- One to three meters of
yellowish brown to gray, massive to weakly stratified, noncalcareous, medium to coarse, poorly sorted
feldspathic pebbly quartz sand with intercalated gravel and loam.  Overlies massive, jointed, firm, loamy glacial
till of the Wolf Creek or Alburnett formations.  Deposits in this mapping unit are derived primarily from erosion
of glacial till in the adjacent drainage basin.  Seasonally high water table may occur in this map unit.
Qwa2 LOAMY AND SANDY SEDIMENT SHALLOW TO GLACIAL TILL (Unnamed erosion surface sediment) --
One to three meters of yellowish brown to gray, massive to weakly stratified, well to poorly sorted loamy, sandy
and silty erosion surface sediment.  Map unit includes some areas mantled with less than two meters of Peoria
Silt (loess).  Loess-mantled areas dominate the map unit in the eastern part of the Marion quadrangle.
Overlies massive, jointed, firm glacial till of the Wolf Creek and Alburnett formations.  Seasonally high water
table may occur in this map unit.
Complexes
Qnw SAND AND GRAVEL (Noah Creek and Wolf Creek formations) -- More than three meters of yellowish brown
to gray, poorly to well sorted, massive to well stratified, coarse to fine feldspathic quartz sand, pebbly sand and
gravel.  In places mantled with one to three meters of fine to medium, well sorted feldspathic quartz sand
derived from wind reworking of the alluvium.  Along Crabapple and Martin creeks in the eastern part of the
Marion quadrangle this unit includes exhumed intertill sand and gravel of the Wolf Creek Formation.
Seasonally active seeps may occur in these intertill settings.  Elsewhere the unit encompasses deposits that
accumulated during the late Wisconsinan
W POND -- Small ponds formed by blockage of drainageways.  Most of these are man made, but a few were
formed naturally when existing drainageways were blocked by migration of sand dunes.
Devonian System
Du FRACTURED CARBONATE BEDROCK (Devonian - undifferentiated). -- Includes fossiliferous limestones of
the Cedar Valley Group and unfossiliferous limestones, dolostones, and shales of the Wapsipinicon Group.
Karst development occurs in the upper part of the Wapsipinicon Group.
Anthropogenic Units
Qq QUARRIES AND PITS -- Limestone quarries and sand and gravel pits.  Extent as of 1990 shown.
Qf FILL -- Areas of major land filling.  Fill associated with railroad grades, highway grades, and land leveling.
Variable in character ranging from loamy and sandy to concrete rubble.
Qi CUT AND FILL -- Areas of cut and fill associated with Interstate-380.  Deposits within this map unit are similar
to those in adjacent map units but may have significant mantles of fill or deep cuts that expose underlying
deposits.Occurs only in the Cedar Rapids North quadrangle.  Similar, but less extensive deposits occur along
all roads in both quadrangles.
A
B
C D
1:24000
 SCALE
91  31’ 30"
42  07’ 30"
91  31’ 30"
91  30’ 00"
42  07’ 30"
91  30’ 00"
42  00’ 00"
42  00’ 00"
MARION
0 1 2 Kilometers


Surficial geologic materials of the Marion Quadrangle, Iowa

https://ir.uiowa.edu/cgi/viewcontent.cgi?article=1002&amp;context=igs_ofm

Surficial geologic materials of the Marion Quadrangle, Iowa

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