https://ir.uiowa.edu/igs_ofm/1068/thumbnail.jp

Bettis, E Arthur, III

Giglierano, James

Liu, Huaibao

McKay, Robert

Quade, Deborah

Tassier-Surine, Stephanie

English

Iowa Research Online

DD
D
D
D
D
D
DD
D
D
D
D
Qps1b-gla
Qpsb-gla
Qal
Qpsb-gla
Qhm
Qpsb-gla
Qpsb-gla
Qpsb-gla
Qaf
Qal
Qpsb-gla
Qpt
Qaf
Qpsb-gla
Qpt
Qpsb-gla
Qpt
Qps1b-gla
Qpsb-gla
Qal
Qpt
Qpsb-gla Qpsb-gla
Qgla
Qpt
Qal
Qpt
Qgla
Qgla
Qgla
Qpsb-gla
Qgla
Qgla
Qpt
Qal
Qal
Qgla
Qal
Qgla
Qgla Qal
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qal Qal
Qgla
Qgla
Qgla
Qal
Qgla
Qaf
Qgla
Qgla
Qgla
Qal
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qpt
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla Qgla
Qal
Qgla Qgla
Qgla
Qal
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qps1b-gla
Qal
Qal
Qps1b-gla
Qps1b-gla
Qpsb-gla
Qpsb-gla
Qal
Qal
Qhm
Qhm
Qhm
Qpsb-gla
Qpsb-gla
Qal
Su-Du-Pu
Su-Du-Pu Su-Du-Pu
Su-Du-Pu
Su-Du-Pu
Su- u-Pu
BA
90°30'0"W
90°30'0"W
90°32'30"W
90°32'30"W
90°35'0"W
90°35'0"W
90°37'30"W
90°37'30"W
41°37'30"N 41°37'30"N
41°35'0"N 41°35'0"N
41°32'30"N 41°32'30"N
41°30'0"N 41°30'0"N
SILVIS
MILAN
DONAHUE ELDRIDGE
ANDALUSIA
MCCAUSLAND
DAVENPORT_EDAVENPORT_W
LINN
LEE
SAC
TAMA
IDA
SIOUX CLAY
IOWA
LYON
POLK
CASS
KOSSUTH
PAGE
JASPER
ADAIR
BENTON JONES
DAVIS
CLAYTON
STORY
FAYETTE
CEDAR
CLINTON
BOONE
PLYMOUTH
MONONA
DALLAS
MILLS
FLOYD
SHELBY
OBRIEN
HARDIN
WAYNE
BUTLER
WOODBURY WEBSTER
WRIGHT
MARION KEOKUK
TAYLOR
SCOTT
JACKSON
GREENE
HARRISON
UNION
GUTHRIE
LUCAS
WARREN
JOHNSON
HENRY
DUBUQUE
CRAWFORD CARROLL
MADISON
ADAMS
FRANKLIN
MAHASKA
CALHOUN GRUNDY
POTTAWATTAMIE
HANCOCK
LOUISA
HAMILTON
DECATUR
EMMET
ALLAMAKEEWINNESHIEK
CLARKE
WORTH
PALO ALTO
MARSHALL
HOWARD
FREMONT
DELAWARE
CHEROKEE BREMER
BUCHANAN
RINGGOLD
POWESHIEK
MONROE
MITCHELL
WAPELLO
BUENA VISTA
AUDUBON
BLACK HAWK
VAN BUREN
CHICKASAW
POCAHONTAS
WASHINGTON
APPANOOSE
OSCEOLA
HUMBOLDT
MUSCATINE
CERRO GORDO
JEFFERSON
DICKINSON
DES MOINES
WINNEBAGO
MONTGOMERY
Base map from USGS Davenport East 7.5' Digital Raster Graphic (IGS GIS file DRGB42.TIF) which wasscanned from the Davenport East 7.5' Topographic Quadrangle map, published by US Geological Survey in 1991Topographic contours and land features based on 1986 aerial photography, field checked in 1988Land elevation contours (10' interval) based on NGVD 1929.
Iowa Geological Survey digital cartographic file DavenportEastquad_surficial09.mxd, version 6/16/09  (ArcGIS 9.2)Map projection and coordinate system based on Universal Transverse Mercator (UTM) Zone 15, datum NAD83.
The map and cross section are based on interpretations of the best available information at the time of mapping. Map interpretations are not a substitute for detailed site specific studies.
Surficial Geology of the Davenport East (Iowa) 7.5' Quadrangle
Location Map
Adjacent 7.5' Quadrangles
Drill Holes
D Bedrock Outcrops
Qal
Su-Du-Pu
Qaf
Qpt
Qhm
Qps1b-gla
Qgla
Qwa3
Qpsb-gla
0 1 2 3 40.5 Miles
0 1 2 3 40.5 Kilometers
1:24,000
±
Ele
vati
on
(fee
t ab
ove
 sea
 lev
el) 800
700
500
600
400
800
700
500
600
400
Elevation
(feet above sea level)
Qu
Goose Creek US 61 I-74 Crow Creek
Su-Du-PuQwa3
Qgla
Qpsb-glaQps1b-gla Qal
Qgla
Qal Qal
QalQal Qal
Qpsb-gla
Qwa3
A B
GEOLOGIC CROSS-SECTION  A-B
Correlation of Map Units
SURFICIAL GEOLOGY OF THE DAVENPORT EAST 7.5’ QUADRANGLE,  SCOTT COUNTY, IOWA  Iowa Geological Survey Open File Map OFM-09-07 June 2009  prepared by  Stephanie Tassier-Surine, Deborah Quade, E. Arthur Bettis, III, Robert McKay,  Huaibao Liu and James Giglierano,   Iowa Geological Survey, Iowa City, Iowa  
  Iowa Department of Natural Resources, Richard A. Leopold, Director Iowa Geological Survey, Robert D. Libra, State Geologist  Supported in part by the U.S. Geological Survey  Cooperative Agreement Number 08HQAG0082 National Cooperative Geologic Mapping Program (STATEMAP)   ACKNOWLEDGMENTS  Recognized for contributions to map’s production:  Andy Asell, Chris Kahle, Ray Anderson, Brian Witzke, Mary Pat Heitman, and Lois Bair.  Drilling was provided under contract with Aquadrill of Swisher, Iowa; a special thanks to drilling crew members who worked at times in challenging drilling conditions.  New subsurface geologic data was generated by the University of Iowa students Sarah Byram and Kyle Bracken who produced descriptive logs of water well drill samples.  Murray Perdue (IGS) prepared well samples for stratigraphic logging.  Dan Murray, Bob Rowden and Tom Marshall provided field assistance during drilling.  A special thanks to all landowners who graciously allowed access to their land for drilling:  Dean Arps, Leonard Hamann, John Kundell, Kevin Kundell, Dave Moeller, Leroy Paustian, Fred Peeters, William Storjohann, and Kris-Del Farms.  Many thanks to the City of Davenport Parks and Recreation Department, and the Scott County Engineer’s Office.  
LEGEND 
 CENOZOIC  QUATERNARY SYSTEM  HUDSON EPISODE  Qal - Alluvium (DeForest Formation-Undifferentiated) Variable thickness of less than 1 to 5 m (3-16 ft) of very dark gray to brown, noncalcareous to calcareous, stratified silty clay loam, clay loam, loam to sandy loam alluvium and colluvium in stream valleys, on hill slopes and in closed depressions. May overlie Glasford Formation glacial till or Noah Creek Formation. Associated with low-relief modern floodplain, closed depressions, modern drainageways or toeslope positions on the landscape.  Seasonal high water table and potential for frequent flooding.    Qaf - Alluvial fan (Corrington Mbr.)  Variable thickness of 2 to 5 m (7-16 ft) of dark brown to yellowish brown, noncalcreous, silt loam to loam with interbedded lenses of fine sand and silts.  A pebble lag is commonly found at or near the fan surface.  Overlies sand and gravel of the Henry Formation.  Steep angled fans at the base of low order drainages and colluvial slopes along the northern margin of the Mississippi River Valley.    WISCONSIN EPISODE    Qpt- Loess Mantled Terrace (Peoria Formation –silt and/or sand facies) 2 to 7 m (7-23 ft) of yellowish brown to gray, massive, jointed, calcareous or noncalcareous, silt loam and intercalated fine to medium, well sorted, sand. May grade downward to poorly to moderately well sorted, moderately to well stratified, coarse to fine feldspathic quartz sand, loam, or silt loam alluvium (Late Phase High Terrace) or may overlie a Farmdale Geosol developed in Roxanna Silt which in turn overlies a well-expressed Sangamon Geosol developed in poorly to moderately well sorted, moderately to well stratified, coarse to fine sand, loam, or silt loam alluvium (Early Phase High Terrace).  Qhm Outwash Sand and Pebbly Sand (Henry Formation, Muscatine Mbr.) coarse to fine sand and pebbly sand mantled with up to 1.5 m (5 ft) of eolian sand, Kingston Terrace complex in the Mississippi Valley.  Qpsb-gla – Thick Loess   (Peoria Formation— silt facies)  Generally 5 to 15 m (16-49 ft) of yellowish to grayish brown, massive, jointed calcareous or noncalcareous silt loam to silty clay loam.  Overlies massive, fractured, clay loam glacial till of the Glasford Formation with or without intervening clayey Farmdale Geosol. This mapping unit encompasses upland divides, ridgetops and convex sideslopes.  Well to somewhat poorly drained landscape.    Qps1b-gla-Thick Loess and Intercalated Eolian Sand (Peoria Formation-silt facies) 5 to 15 m (16-49 ft) of yellowish brown to gray, massive, noncalcareous grading downward to calcareous silt loam and intercalated fine to medium, well sorted, sand.  Minimum thickness of 5 m (16 ft) on uplands. Maximum thickness of 2-7 m (7-23 ft) of loess occurs on adjacent slopes.  Overlies massive, fractured, loamy glacial till of the Illinoian Glasford Formation with or without intervening clayey Farmdale /Sangamon Geosol.  ILLINOIS EPISODE  Qgla – Till  (Glasford Formation)   Generally 10 to 35 m ( 33-115 ft) of  very dense, massive, fractured, loamy glacial till of the Illinoian Glasford Formation with or without a thin loess mantle (Peoria Formation— less than 2 m) and intervening clayey Farmdale/Sangamon Geosol.  Uppermost till may be reworked (associated with the Iowan Surface). This mapping unit encompasses narrowly dissected interfluves and side slopes, and side valley slopes.  Drainage is variable from well drained to poorly drained.  PRE-ILLINOIS EPISODE  Qwa3 – Till  (Wolf Creek or Alburnett Formations)   Generally 10 to 35 m (33-115 ft) of  very dense, massive, fractured, loamy glacial till of the Wolf Creek or Alburnett formations with or without a thin loess mantle (Peoria Formation— less than 2 m) and intervening clayey Farmdale/Sangamon Geosol. This mapping unit encompasses narrowly dissected interfluves and side slopes, and side valley slopes.  Drainage is variable from well drained to poorly drained.  This unit is shown only in the cross section.   PALEOZOIC  Su-Du-Pu – Undifferentiated Silurian, Devonian and Pennsylvanian bedrock.  Primarily shale, dolomite and limestone.  
Hudson
Wisconsin
Pre-Illinois
QUATERNARY
Holocene
Pleistocene
Illinois
Qaf
Qpt
Qpsb-gla
Qps1b-gla
Qhm
Qgla
Qal
Qwa3
Alluvial and OutwashDeposits EolianDeposits GlacialDeposits


Surficial Geology of the Davenport East 7.5\u27 Quadrangle, Scott County, Iowa

https://ir.uiowa.edu/igs_ofm/1067/thumbnail.jp

D
DD
D
D
Qgla
Qps1b-gla
Qps1b-gla
Qps1b-gla
Qps1b-gla
Qps1b-gla
Qpsb-gla
Qpsb-gla
Qpsb-glaQpsb-gla
Qps1b-gla
Qpsb-gla
Qal
Qpsb-gla
Qal
Qpsb-gla
Qal
Qaf
Qhm
Qps1b-gla
Qgla
Qps1b-gla
Qps1b-gla
Qpsb-gla
Qpsb-gla
Qptep
Qal
Qpt
Qptep
Qps1b-gla
Qpt
Qpt
Qgla
Qptep
Qpt
Qptep
Qgla
Qpt
Qgla
Qpt
Qptep
Qpt
Qgla
Qgla
Qgla
Qptep
Qgla
Qptep
Qgla
Qgla
Qptep
Qgla
Qgla
Qptep
Qpt Qpt
Qptep
Qgla
Qps1b-gla
Qpt
Qpt
Qptep
Qal
Qal
Qal
Qal
Qal
Qgla
Qal
Qgla
Qal
Qgla
Qal
Qal
QglaQal
Qgla
Qal
Qal
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qhs
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qal
Qgla
Qal
Qgla
Qgla
Qps1b-gla
Qgla
Qal
Qgla
Qgla
Qgla
Qptep
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qpt
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qal
Qpt
Qgla
Qpt
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qal
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qpt
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qptep
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qal
Qgla
Qgla
Qal
Qgla
Qal Qal
Qgla
Qgla
Qgla
Qgla
Qgla Qgla
Qgla
Qgla
Qgla
Qgla
Qgla
Qal
Qgla
Qgla
Qgla
Qgla
Qgla
A B
A
B
90°37'30"W
90°37'30"W
90°40'0"W
90°40'0"W
90°42'30"W
90°42'30"W
90°45'0"W
90°45'0"W
41°37'30"N 41°37'30"N
41°35'0"N 41°35'0"N
41°32'30"N 41°32'30"N
41°30'0"N 41°30'0"N
MILAN
DIXON
WALCOTT
DONAHUE ELDRIDGE
ANDALUSIAMONTPELIER
DAVENPORT_EDAVENPORT_W
LINN
LEE
SAC
TAMA
IDA
SIOUX CLAY
IOWA
LYON
POLK
CASS
KOSSUTH
PAGE
JASPER
ADAIR
BENTON JONES
DAVIS
CLAYTON
STORY
FAYETTE
CEDAR
CLINTON
BOONE
PLYMOUTH
MONONA
DALLAS
MILLS
FLOYD
SHELBY
OBRIEN
HARDIN
WAYNE
BUTLER
WOODBURY WEBSTER
WRIGHT
MARION KEOKUK
TAYLOR
SCOTT
JACKSON
GREENE
HARRISON
UNION
GUTHRIE
LUCAS
WARREN
JOHNSON
HENRY
DUBUQUE
CRAWFORD CARROLL
MADISON
ADAMS
FRANKLIN
MAHASKA
CALHOUN GRUNDY
POTTAWATTAMIE
HANCOCK
LOUISA
HAMILTON
DECATUR
EMMET
ALLAMAKEEWINNESHIEK
CLARKE
WORTH
PALO ALTO
MARSHALL
HOWARD
FREMONT
DELAWARE
CHEROKEE BREMER
BUCHANAN
RINGGOLD
POWESHIEK
MONROE
MITCHELL
WAPELLO
BUENA VISTA
AUDUBON
BLACK HAWK
VAN BUREN
CHICKASAW
POCAHONTAS
WASHINGTON
APPANOOSE
OSCEOLA
HUMBOLDT
MUSCATINE
CERRO GORDO
JEFFERSON
DICKINSON
DES MOINES
WINNEBAGO
MONTGOMERY
Base map from USGS Davenport West 7.5' Digital Raster Graphic (IGS GIS file DRGQ49.TIF) which wasscanned from the Davenport West 7.5' Topographic Quadrangle map, published by US Geological Survey in 1991Topographic contours and land features based on 1986 aerial photography, field checked in 1991Land elevation contours (10' interval) based on NGVD 1929.
Iowa Geological Survey digital cartographic file DavenportWestquad_surficial09.mxd, version 6/18/09  (ArcGIS 9.2)Map projection and coordinate system based on Universal Transverse Mercator (UTM) Zone 15, datum NAD83.
The map and cross section are based on interpretations of the best available information at the time of mapping. Map interpretations are not a substitute for detailed site specific studies.
Drill Holes
D Bedrock Outcrops
Surficial Geology of the Davenport West (Iowa) 7.5' Quadrangle
±
1:24,000
0 1 2 3 40.5 Miles
0 1 2 3 40.5 Kilometers
Adjacent 7.5' Quadrangles
Location Map
800
700
500
600Ele
vati
on
(fee
t ab
ove
 sea
 lev
el) 800
700
500
600
Elevation
(feet above sea level)
A B
GEOLOGIC CROSS-SECTION  A-B
I - 80
Qu
Duck Creek
Su-Du-Pu
Qwa3Qgla
Qps1b-gla
Qpsb-gla
Qptep
Qal
Qwa3
Qgla
Qpsb-glaQal Qal Qal
Qal
Qal Qal Qal
Qal
Qal
Su-Du-Pu
Qaf
Qpt
Qptep
Qhm
Qps1b-gla
Qgla
Qwa3
Qhs
Qpsb-gla
SURFICIAL GEOLOGY OF THE DAVENPORT WEST 7.5’ QUADRANGLE,  SCOTT COUNTY, IOWA  Iowa Geological Survey Open File Map OFM-09-06 June 2009  prepared by  Stephanie Tassier-Surine, Deborah Quade, E. Arthur Bettis, III, Robert McKay, Huaibao Liu,  and James Giglierano  Iowa Geological Survey, Iowa City, Iowa  
  Iowa Department of Natural Resources, Richard A. Leopold, Director Iowa Geological Survey, Robert D. Libra, State Geologist  Supported in part by the U.S. Geological Survey  Cooperative Agreement Number 08HQAG0082 National Cooperative Geologic Mapping Program (STATEMAP)   ACKNOWLEDGMENTS  Recognized for contributions to map’s production:  Andy Asell, Chris Kahle, Ray Anderson, Brian Witzke, Mary Pat Heitman, and Lois Bair.  Drilling was provided under contract with Aquadrill of Swisher, Iowa; a special thanks to drilling crew members who worked at times in challenging drilling conditions.  New subsurface geologic data was generated by the University of Iowa students Sarah Byram and Kyle Bracken who produced descriptive logs of water well drill samples.  Murray Perdue (IGS) prepared well samples for stratigraphic logging.  Dan Murray, Bob Rowden and Tom Marshall provided field assistance during drilling.  A special thanks to all landowners who graciously allowed access to their land for drilling:  Dean Arps, Leonard Hamann, John Kundell, Kevin Kundell, Dave Moeller, Leroy Paustian, Fred Peeters, William Storjohann, and Kris-Del Farms.  Many thanks to the City of Davenport Parks and Recreation Department, and the Scott County Engineer’s Office.  
LEGEND  CENOZOIC  QUATERNARY SYSTEM  HUDSON EPISODE  Qal - Alluvium (DeForest Formation-Undifferentiated) Variable thickness of less than 1 to 5 m (3-16 ft) of very dark gray to brown, noncalcareous to calcareous, stratified silty clay loam, clay loam, loam to sandy loam alluvium and colluvium in stream valleys, on hill slopes and in closed depressions. May overlie Glasford Formation glacial till or Noah Creek Formation. Associated with low-relief modern floodplain, closed depressions, modern drainageways or toeslope positions on the landscape.  Seasonal high water table and potential for frequent flooding.    Qaf - Alluvial fan (Corrington Mbr.)  Variable thickness of 2 to 5 m (7-16 ft) of dark brown to yellowish brown, noncalcreous, silt loam to loam with interbedded lenses of fine sand and silts.  A pebble lag is commonly found at or near the fan surface.  Overlies sand and gravel of the Henry Formation.  Steep angled fans at the base of low order drainages and colluvial slopes along the northern margin of the Mississippi River Valley.    WISCONSIN EPISODE    Qpt- Loess Mantled Terrace (Peoria Formation –silt and/or sand facies) 2 to 7 m (7-23 ft) of yellowish brown to gray, massive, jointed, calcareous or noncalcareous, silt loam and intercalated fine to medium, well sorted, sand. May grade downward to poorly to moderately well sorted, moderately to well stratified, coarse to fine feldspathic quartz sand, loam, or silt loam alluvium (Late Phase High Terrace) or may overlie a Farmdale Geosol developed in Roxanna Silt which in turn overlies a well-expressed Sangamon Geosol developed in poorly to moderately well sorted, moderately to well stratified, coarse to fine sand, loam, or silt loam alluvium (Early Phase High Terrace).  Qptep - Early Phase High Terrace (EPHT)  (Peoria Formation-silt and/or sand facies)  2 to 7 m (7-23 ft) of yellowish brown to gray, massive, jointed, calcareous or noncalcareous, silt loam and intercalated fine to medium, well sorted, sand. The Peoria deposits overlie a Farmdale Geosol developed in the Pisgah Formation which in turn overlies a well-expressed Sangamon Geosol developed in poorly to moderately well sorted, moderately to well stratified, coarse to fine sand, loam, or silt loam alluvium.  Qhm Outwash Sand and Pebbly Sand (Henry Formation, Muscatine Mbr.) coarse to fine sand and pebbly sand mantled with up to 1.5 m (5 ft) of eolian sand, Kingston Terrace complex in the Mississippi Valley.  Qhs - Outwash Sand and Pebbly Sand (Henry Formation, Sabula Mbr.) coarse to fine sand and pebbly sand mantled with up to 5 m (16 ft) of eolian sand, Savanna Terrace complex in the Mississippi Valley.  Qpsb-gla – Thick Loess   (Peoria Formation— silt facies)  Generally 5 to 15 m (16-49 ft) of yellowish to grayish brown, massive, jointed calcareous or noncalcareous silt loam to silty clay loam.  Overlies massive, fractured, clay loam glacial till of the Glasford Formation with or without intervening clayey Farmdale Geosol. This mapping unit encompasses upland divides, ridgetops and convex sideslopes.  Well to somewhat poorly drained landscape.    Qps1b-gla-Thick Loess and Intercalated Eolian Sand (Peoria Formation-silt facies) 5 to 15 m (16-49 ft) of yellowish brown to gray, massive, noncalcareous grading downward to calcareous silt loam and intercalated fine to medium, well sorted, sand.  Minimum thickness of 5 m (16 ft) on uplands. Maximum thickness of 2-7 m (7-23 ft) of loess occurs on adjacent slopes.  Overlies massive, fractured, loamy glacial till of the Illinoian Glasford Formation with or without intervening clayey Farmdale /Sangamon Geosol.  ILLINOIS EPISODE  Qgla – Till  (Glasford Formation)   Generally 10 to 35 m ( 33-115 ft) of  very dense, massive, fractured, loamy glacial till of the Illinoian Glasford Formation with or without a thin loess mantle (Peoria Formation— less than 2 m) and intervening clayey Farmdale/Sangamon Geosol.  Uppermost till may be reworked (associated with the Iowan Surface). This mapping unit encompasses narrowly dissected interfluves and side slopes, and side valley slopes.  Drainage is variable from well drained to poorly drained.  PRE-ILLINOIS EPISODE  Qwa3 – Till  (Wolf Creek or Alburnett Formations)   Generally 10 to 35 m (33-115 ft) of  very dense, massive, fractured, loamy glacial till of the Wolf Creek or Alburnett formations with or without a thin loess mantle (Peoria Formation— less than 2 m) and intervening clayey Farmdale/Sangamon Geosol. This mapping unit encompasses narrowly dissected interfluves and side slopes, and side valley slopes.  Drainage is variable from well drained to poorly drained.  This unit is shown only in the cross section.   PALEOZOIC  Su-Du-Pu – Undifferentiated Silurian, Devonian and Pennsylvanian bedrock.  Primarily shale, dolomite and limestone.        Correlation of Map Units
Hudson
Wisconsin
Pre-Illinois
QUATERNARY
Holocene
Pleistocene
Illinois
Qaf
Qpt
Qptep
Qpsb-gla
Qps1b-gla
Qhs
Qhm
Qgla
Qal
Qwa3
Alluvial and OutwashDeposits EolianDeposits GlacialDeposits


Surficial Geology of the Davenport West 7.5\u27 Quadrangle, Scott County, Iowa

https://ir.uiowa.edu/cgi/viewcontent.cgi?article=1067&amp;context=igs_ofm

Surficial Geology of the Davenport East 7.5\u27 Quadrangle, Scott County, Iowa

Abstract

Similar works

Full text

Available Versions

Iowa Research Online

Iowa Research Online