https://ir.uiowa.edu/igs_ofm/1019/thumbnail.jp

Bettis, E Arthur, III

Giglierano, James D

Hoyer, Bernard E

Quade, Deborah J

English

Iowa Research Online

(/169
(/169
"!9
"!9
(/169
(/69
(/69
(/69
(/18
(/18
(/18
(/69
(/69
(/69
(/169
.-,35
"!9
"!9
"!111
"!3
"!3"!3
"!17
"!17
(/18
(/169
Garner
Eagle
Grove
Algona
Swea
City
Buffalo
Center
Lake
Mills
Leland
Forest
City
Britt
Kanawha
Belmond
Clarion
KOSSUTH WINNEBAGO
HANCOCK
WRIGHT
B
lue E
arth River
L ittl e
 B
uffa
l o
 C
ree
k
Union Slough
East Fork Des Moines R i ver
Mud Creek
Bla
ck C
at Cree
k
Lotts Creek
Lotts Creek
Fourmile Creek
East Fork D
es M
oines Riv er
Pr
ai
ri
e 
Cr
ee
k
Bo
on
e R
ive
r
Boo
ne R
iver
Ea
gl
e C
ree
k
Ot
ter 
Cre
ek
B
oone River
W
hi
te 
Fo
x C
re
ek
Ea
gl
e 
C
re
ek
Iow
a Ri ver
Iowa River
W
hi
te
 F
ox
 C
re
e k
Lu
ic
k s
 C
re
ek
Winnebago River
Be
av
er 
Cre
ek
Pike Run
Beav
er Cr
eek
Lit
tle
 B
u f
fa
lo
 C
re
ek
Iowa River, W
est B ranc h
Iow
a River, East Branch
Lindsey C
ree
k
Plum  C
reek
R23WR24W
Wheeler Cre ek
R25WR26W
T9
0N
T9
1N
T9
2N
T9
3N
R27W
R28WR29W
R30W
T9
4N
T9
5N
T9
6N
T9
7N
T9
8N
T9
9N
T1
00
N
(/18
W
in
ne
ba
go
 R
iv
er
Wall Lake
Lake Cornelia
Elm Lake
Iow
a R
ive
r
Morse Lake
Twin Lakes
Crystal Lake
Eagle Lake
Oak LakeLake Smith
Harmon Lake
Rice Lake
Buffalo Creek
W
in
ne
ba
go
 R
iv
er
Goose Lake
Lake George
Buffa
lo C
ree
k
2 0 2 4 6 8 10 Miles
3 0 3 6 9 12 Kilometers
Scale 1:100,000
Surficial Geology of the Des Moines Lobe of Iowa
Hancock, Kossuth, Winnebago and Wright Counties
LEGEND
Description of Mapping Un its
Hudson Episode
Qo-Muck and Peat (DeForest Formation-Woden Mbr)  Generally 2.5 to 11 m of black to very dark gray, calcareous, muck, peat and
silty clay loam colluvium and organic sediments in drained and undrained closed and semi-closed depressions.  Overlies a gray,
calcareous, massive, dense loam diamicton (Dows Fm.- Alden Mbr.) or may overlie Noah Creek Fm. sand and gravel. Low relief
features that occupy depressions and low sags on the landscape.  Seasonal high water table.  Muck and peat areas of <4 hectares is  not
mapped.
Qal- Alluvium (DeForest Formation-Undifferentiated) Variable thickness of less than 1 m to 5 m of a very dark gray to brown,
noncalcareous, stratified silty clay loam, clay loam, loam to sandy loam alluvium and colluvium in stream valleys, hillslopes and
closed depressions. May overlie Dows Formation (Morgan or Alden Mbr.), Noah Creek Formation or Devonian bedrock.  Occupies
low relief modern floodplain, closed depressions, modern drainageways or toeslope positions on the landscape.  Seasonal high water
table.
Late Wisconsin Episode
Qtp- Till  plain  (Dows Formation-Morgan Mbr.)  Less than 8 m of yellowish brown, often calcareous and fractured, s tratified loam to
silt loam to sandy loam diamicton; textures can be quite variable. Overlies gray, calcareous, massive, dense loam diamicton (Dows
Fm.-- Alden Mbr.).  Low to moderate relief  (3 to 8 m), undulating plains with irregular surface patterns.  Seasonal high water table.
Qtpl- Till plain with lineated ridge forms (Dows Formation-Morgan Mbr.)  Less  than 3 m of yellowish to grayish brown, often
calcareous and fractured, stratified loam to silt loam to sandy loam diamicton; textures can be quite variable.  Overlies  gray,
calcareous, massive, dense loam diamicton (Dows Fm.- Alden Mbr.).  Low relief (less than 3 m of local relief), s lightly undulating
plains with irregular surface patterns.  Lineated ridge forms  (Dows Formation-Morgan Mbr./ Pilot Knob Mbr.)  Less than 6 m of
yellowish brown, often calcareous, s tratified loam to silt loam to sandy loam diamicton; textures can be quite variable.  Occasionally,
these ridges consist primarily of sand and gravel and exhibit evidence of syndepositional collapse (Pilot Knob Mbr.)  Overlies gray,
calcareous, massive, dense loam diamicton (Dows Fm.-Alden Mbr.).  Faint to well-defined lineated ridges oriented transverse to
glacier flow are inset on till plain.  Ridges are moderate to high relief features (3 to 8 m).  Overall landform is  a swell and swale
topography.  Seasonal high water table.
Qte-Till  escarpment  (Dows Formation-Morgan Mbr.)  Less than 4 m of yellowish to grayish brown, usually calcareous and
fractured, stratified loam to silt loam to sandy loam diamicton; textures can be quite variable.  Overlies gray, calcareous, massive,
dense loam diamicton (Dows Fm.-- Alden Mbr.).  Locally on toeslopes Morgan Mbr. thickness can exceed 18 m.  High relief steep
crested landform feature exceeds 8 m.
Qtr- Till  ridge  (Dows Formation-Morgan Mbr.)  Generally 4 to 15 m of yellowish to grayish brown, usually calcareous and
fractured, stratified loam to silt loam to sandy loam diamicton; textures can be quite variable.  Overlies gray, calcareous, massive,
dense loam diamicton (Dows Fm.-- Alden Mbr.).   Moderate to high relief hummocky landform feature exceeds 3 to 8 m.
Qoch- Outwash channel   (Noah Creek Formation)   Generally less than 7 m of yellowish brown coarse-grained sand and gravel.
Overlies gray, calcareous, massive, dense loam diamicton (Dows Fm.-- Alden Mbr.) or in several locations P aleozoic limestone
bedrock.  In valley positions, it is  at the land surface of older terraces.  On the modern floodplain it is buried by DeForest Fm.
alluvium.  Low relief landforms that may be deposited in broad terraces; long, narrow longitudinal terraces or in cuspate-shaped point
terraces.
Qof-  Outw ash fan  (Noah Creek Formation)  Thickness can be quite variable from 3 to 12 m of yellowish-brown coarse-grained sand
and gravel.  May o verlie yellowish to grayish brown usually calcareous, stratified loam to s ilt loam to sandy loam diamicton; textures
can be quite variable (Dows Fm.-Morgan Mbr.); or it may overlie a gray, calcareous, massive, dense loam diamicton (Dows Fm.-
Alden Mbr.).  Narrow low-relief apron that gently slopes away from the moraine front.  Seasonal high water table.
Qglp- Lake plain  (Dows Formation-Lake Mills Mbr.)  Generally less than 3 m of dark grayish brown, m assive, calcareous silty clay
loam, s ilt loam overlying a thin basal increment of sand and gravel (<1 m).  Overlies  yellowish to grayish brown usually calcareous,
s tratified loam to silt loam to sandy loam diamicton; textures can be quite variable (Dows Fm.--Morgan Mbr.) or it may overlie a gray,
calcareous, massive, dense loam diamicton (Dows Fm.-- Alden Mbr.). Low relief broad plain with less  than 3 m of local relief.
Seasonal high water table.
Qglhc- Collapsed lake sediments-hummocky isolated ice-w alled lake plains-flat-topped hummocks--  (Dows Formation-Lake
Mills Mbr./ Morgan Mbr.)  Generally less than 3 m of dark grayish brown, m assive, calcareous s ilty clay loam, to silt loam overlying a
thin basal increment of sand and gravel (<1 m).  It overlies yellowish to grayish brown usually calcareous, s tratified loam to silt loam
to sandy loam diamicton; textures can be quite variable (Dows Fm.--Morgan Mbr.  Isolated ice-walled lake plains comprise a portion
of this  landform area.  Other hummocks consist of less than 4 m of yellowish to grayish brown usually calcareous, stratified loam to
silt loam to sandy loam diamicton (Dows Fm.--Morgan Mbr.).  Overlies a gray, calcareous, massive, dense loam diamicton (Dows
Fm.-- Alden Mbr.).  Moderate to high relief hummocky landform area with 3 to 8 m of local relief.
Complexes
Qsgc- Supraglacial  complex  (Dows Formation-Pilot Knob Mbr./ Morgan Mbr.)  Greater than 3 m but less  than 15 m of yellowish
brown, often calcareous and fractured, s tratified sand and gravel with interbedded stratified loam diamicton.  Collapse features are
usually evident.  In depressions and sags on upland surfaces, the sand and gravel may be buried by DeForest Fm.-Woden Mbr.
Overlies gray, calcareous, massive, dense loam diamicton (Dows Fm.-- Alden Mbr.).  Moderate to high relief (3 to 8 m) hummocks,
beaded ridges, kames and associated linked drainages on upland surfaces.
Qgfp- Complex glaciofluvial  plain (Noah Creek Formation)  Greater than 3 m but less  than 15 m of grayish brown, often calcareous,
s tratified sand and gravel.  O verlies  gray, calcareous, massive, dense loam diamicton (Dows Fm.-- Alden Mbr.) or in several locations
P aleozoic limestone bedrock.  It may have sand and gravel at the land surface.  In depressions and sags it may be buried by several
meters of DeForest Fm.-Woden Mbr.  Low relief broad flat plain with less than 3 m of local relief.  Seasonal high water table.
Water features
Geological Survey Bureau
Open File Map 99-1
June 1999
Prepared by
Deborah J. Quade
James D. Giglierano
E. Arthur Bettis III*
Bernard E. Hoyer
Supported by the U. S. Geological Survey
Cooperative Agreement Number 98HQAG2051
National Cooperative Geologic Mapping Program (STATEMAP)
Energy and Geological Resources Division
Geological Survey Bureau
Iowa Department of Natural Resources
Paul W. Johnson, Director
Acknowledgements
Recognized for direct contributions to the map’s production: Timothy J. Kemmis, Donald L. Koch, Jean C. Prior,
Lynette S. Seigley, Keith E. Schilling, Calvin F. Wolter, Mary P. Skopec, Michael Bounk, Matthew A. Culp,
Robert M. McKay, Billy J. Bunker, Jackson L. Gilmore, Raymond R. Anderson, Adrian Goettemoeller, Andy
Asell, Courtney Stewart, Joe Krieg, Kathyrn Benz, Jessica Overmohle, Coulter Wood, Mary Ellis, Shane Smith,
Skipp Slattenow, and Rhonda Fetters.  Bridge boring information was provided by Engineer’s offices of Hancock,
Kossuth, Winnebago and Wright Counties.  Special thanks to the Iowa DOT for providing soil boring data, Dean
Lewis at Murphy Family Farms for providing soil boring information, and to Jim Schneider, Joe Johnson, Bob
Dideriksen and Robin Wisner of the NRCS for assistance with field drilling and mapping.  Deep drilling was
provided under contract by Aquadrill; core descriptions and field assistance provided under contract by B. Brandon
Curry.  The following individuals graciously allowed access to their land for drilling: Maurice Elsbecker, Alvin
Berte, Tom Burk, Lonnie Schmidt, Todd Nygaard, Stanley Sandvig, Marion and Clarence Casey, Henry Pfeffer,
Russ Bode, Larry Wertjes, Rod Olthoff, Mike Smidt, Larry Nemmers, Jack Henry, and Larry Buscher.  Special
thanks also to Bruce Lidner, Wright County Conservation Board and Steve Rietz, Asst. Wright County Engineer
for arranging access for drilling on land owned by Wright County.
*Geoscience Department, University of Iowa.
LINN
LEE
SAC
TAMA
IDA
SIOUX
CLAY
IOWAPOLK
LYON
CASS
KOSSUTH
PAGE
JASPER
ADAIR
BENTON JONES
STORY
DAVIS
CLAYTONFAYETTE
CEDAR
CLINTON
BOONE
PLYMOUTH
MONONA
FLOYD
DALLAS
SHELBY
BUTLER
MILLS
O'BRIEN
WOODBURY
WEBSTER
WAYNE
HARDIN
WRIGHT
MARION
SCOTT
GREENE
KEOKUK
TAYLOR
JACKSON
GUTHRIE
HARRISON
WARREN
UNION LUCAS HENRY
JOHNSON
DUBUQUE
CRAWFORD CARROLL
MADISON
ADAMS
GRUNDY
FRANKLIN
CALHOUN
MAHASKA
LOUISA
HANCOCK
POTTAWATTAMIE
EMMET
DECATUR
ALLAMAKEE
HAMILTON
WINNESHIEKWORTH
CLARKE
FREMONT
MARSHALL
DELAWARE
HOWARD
CHEROKEE
BREMER
PALO ALTO
BUCHANAN
RINGGOLD
POWESHIEK
MONROE
MITCHELL
WAPELLO
AUDUBON
BUENA VISTA
BLACK HAWK
VAN BUREN
OSCEOLA
WASHINGTON
CHICKASAW
POCAHONTAS
APPANOOSE
HUMBOLDT
MUSCATINE
CERRO GORDO
JEFFERSON
DICKINSON
DES MOINES
WINNEBAGO
MONTGOMERY
Mapped area shown in yellow.


Surficial Geology of the Des Moines Lobe of Iowa Hancock, Kossuth, Winnebago and Wright Counties

https://ir.uiowa.edu/cgi/viewcontent.cgi?article=1019&amp;context=igs_ofm

Surficial Geology of the Des Moines Lobe of Iowa Hancock, Kossuth, Winnebago and Wright Counties

Abstract

Similar works

Full text

Available Versions

Iowa Research Online