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Geophysical response of slackwater and sandy terrace deposits near Savanna, Northwestern Illinois

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Abstract

Low-permeability clayey and silty river terrace deposits are an important component in protecting underlying aquifers from contamination by agrochemicals and other contaminants. Such deposits also record deglaciation dynamics, meltwater drainage and local climatic variations. In this study, conducted over Mississippi River terraces near Savanna, Illinois, clayey slackwater terrace deposits and sandy terrace deposits are examined using resistivity soundings, ground-penetrating radar (GPR) profiles and direct-push conductivity logs. The clayey terrace deposits are characterized by low resistivity (10–35 ohm-m) and slow GPR wave velocity (0.07 m/ns), whereas non-clayey terrace deposits exhibit much higher resistivity (169–1,762 ohm-m) and faster GPR wave velocities (0.15 m/ns). Sandy and clayey terrace deposits may thus be differentiated and mapped on the basis of their geophysical response. Models based on resistivity soundings provide reasonably accurate estimates of the thickness of clayey slackwater deposits, but fail to reveal thin sands embedded in the clayey deposits. In some cases, the full thickness of the slackwater deposits was also not revealed. GPR profiles, however, imaged these embedded shallow sands and possibly imaged deeper sands below the base of the slackwater deposits, giving more accurate estimates of thickness. GPR also accurately resolved the thickness and character of sandy terrace deposits. Direct-push conductivity logs provide both accurate estimates of the thickness of clayey slackwater terrace deposits and a means of identifying thin embedded sands. In summary, resistivity soundings image these deposits at the lowest resolution with one-dimensional models, whereas GPR provides much higher resolution showing detailed layering within the upper several meters. Direct-push conductivity logs provide the highest resolution, but are invasive and only reveal stratigraphy at one location.

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References

  • Bettis EA III, Hajic ER (1990) Savanna terrace exposure north of Sabula, Iowa. In: Hammer W, Hess DF (eds) Geology field guidebook: current perspectives on Illinois basin and Mississippi arch geology. Geological Society of America, North Central Section, 24th annual meeting

  • Bettis EA III, Hajic ER (2007) Latest glacial and early Holocene megafloods in the Upper Mississippi River Valley. In: Geological Society of America, South-Central Section and North Central Section, 41st annual meeting—abstracts with programs, vol 39, p 63

  • Bettis EA III, Anderson JD, Oliver JS (1996) Landform sediment assemblage (LSA) units in the upper Mississippi River Valley, United States Army Corps of Engineers, Rock Island District, vol 1. U.S. Army Corps of Engineers

  • Clayton L (1983) Chronology of Lake Agassiz drainage to Lake Superior. In: Teller JT, Clayton L (eds) Glacial Lake Agassiz. Geological Association of Canada, Special Paper, vol 26, pp 291–307

  • Curry BB, Grimley DA (2006) Provenance, age, and environment of mid-Wisconsinan slackwater lake sediment in the St. Louis Metro East area, USA. Quat Res 65:108–122

    Article  Google Scholar 

  • Flock MA (1983) The late Wisconsinan Savanna Terrace in tributaries to the Upper Mississippi River. Quat Res 20:165–176

    Article  Google Scholar 

  • Hansel AK, Johnson WH (1996) Wedron and Mason Groups: Lithostratigraphic reclassification of deposits of the Wisconsin episode, Lake Michigan Lobe Area. Illinois State Geological Survey Bull, vol 104

  • Hawley JW (2001) Scale-dependent hydrogeologic controls on groundwater contamination at an industrial site in the Rio Grande Valley area of northwestern Albuquerque, New Mexico. In: Abstracts with programs, Geological Society of America 53rd annual meeting, Rocky Mountain and South Central Section, vol 33, p 52

  • Inman DJ, Freeland RS, Ammons JT, Yoder RE (2002) Soil investigations using electromagnetic induction and ground-penetrating radar in southwest Tennessee. Soil Sci Soc Am J 66:206–211

    Article  Google Scholar 

  • Interpex (1988) ResixPlus™ user’s manual (including disks). Interpex, Ltd., Golden

    Google Scholar 

  • Johnson BA (2009) Provenance of slackwater sediments in the Savanna Terrace, northwestern Illinois. Ph.D. Dissertation, Northern Illinois University, DeKalb

  • Johnson BA, Carpenter PJ (2008) Analysis of slackwater sediments found in the Savanna Terraces along the Mississippi River, Northwestern Illinois. In: Geological Society of America, 2008 joint annual meeting abstracts with programs, vol 40, p 147

  • Johnson BA, Stravers J, Konen M, Wright M (2008) Quaternary geologic map of the Blackhawk Quadrangle (Carroll and Jo Daviess Counties, Illinois and Jackson County, Iowa). US Geological Survey map, EDMAP Series. http://www.isgs.illinois.edu/maps-data-pub/isgs-quads/b/blackhawk-ed.shtml

  • Milson J (2003) Field geophysics, 3rd edn. Wiley, Chichester, p 232

    Google Scholar 

  • Mitamura M, Masuda H, Itai T, Minowa T, Maruoka T, Ahmed KM, Seddique AA, Biswas DK, Nakaya S, Uesugi K, Kusakabe M (2008) Geological structure of an arsenic-contaminated aquifer at Sonargaon, Bangladesh. J Geol 116:288–302

    Article  Google Scholar 

  • Nathanail CP, Bardos RP (2004) Reclamation of contaminated land. Wiley, Chichester, p 238

    Book  Google Scholar 

  • Oches EA, McCoy WD, Clark PU (1996) Amino acid estimates of latitudinal temperature gradients and geochronology of loess deposition during the last glaciation, Mississippi Valley, United States. Geol Soc Am Bull 108:892–903

    Article  Google Scholar 

  • Reynolds JM (1997) An introduction to applied geophysics. Wiley, Chichester

    Google Scholar 

  • SAIC (2005) Groundwater Flow Model, Savanna Army Depot Activity, Savanna, Illinois—final. Science Applications International Corporation, Reston, VA, Proj. No. 01-0827-04-2282-173 (submitted to the United States Army Corps of Engineers)

  • Schulmeister MK (2003) Hydrostratigraphic controls on groundwater contamination near the margin of a typical mid-western floodplain. In: Abstracts with programs, Geological Society of America annual meeting, vol 35, pp 15–16

  • USEPA (2010) National Priorities List (NPL) site narrative for Savanna Army Depot Activity, Online document, US Environmental Protection Agency. http://www.epa.gov/superfund/sites/npl/nar519.htm

  • Yoder RE, Freeland RS, Ammons JT, Leonard LL (2001) Mapping agricultural fields with GPR and EMI to identify offsite movement of agrochemicals. J Appl Geophys 47:251–259

    Article  Google Scholar 

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Acknowledgments

The authors would like to thank Corrie Floyd of the University of Wisconsin-Eau Claire, Eduard Breuer of Northern Illinois University, Andrew Shears of the University of Wisconsin-Fox Valley, and the students of the 2008 Northern Illinois University Environmental Field Camp for their valuable field assistance on this project.

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Authors and Affiliations

  1. Department of Geography and Geology, University of Wisconsin-Fox Valley, Menasha, WI, 54952, USA

    Beth A. Johnson

  2. Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, IL, 60115, USA

    Philip J. Carpenter

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  1. Beth A. Johnson
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  2. Philip J. Carpenter
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Correspondence to Beth A. Johnson.

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Johnson, B.A., Carpenter, P.J. Geophysical response of slackwater and sandy terrace deposits near Savanna, Northwestern Illinois. Environ Earth Sci 68, 955–964 (2013). https://doi.org/10.1007/s12665-012-1798-5

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  • DOI: https://doi.org/10.1007/s12665-012-1798-5

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