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Changes in Sediment Accumulation Rate in An Oxbow Lake Following Late 19Th Century Clearing of Land for Agricultural Use: A 210Pb, 137Cs, and 14C Study in Mississippi, USA

Published online by Cambridge University Press:  18 July 2016

Gregg R Davidson ,
Meredith Carnley ,
Todd Lange ,
Stanley J Galicki  and
Andrew Douglas
Gregg R Davidson*
Affiliation:
Department of Geology and Geological Engineering, University of Mississippi, Carrier 118, University, Mississippi 38677, USA.
Meredith Carnley
Affiliation:
Department of Geology and Geological Engineering, University of Mississippi, Carrier 118, University, Mississippi 38677, USA.
Todd Lange
Affiliation:
NSF-Arizona AMS Facility, Department of Physics, University of Arizona, Physics Building, 1118 East Fourth St., P.O. Box 210081, Tucson, Arizona 85721, USA
Stanley J Galicki
Affiliation:
Geology Department, Millsaps College, 1701 N. State St., Jackson, Mississippi 39210, USA.
Andrew Douglas
Affiliation:
Department of Biology, University of Mississippi, University, Mississippi 38677, USA.
*
Corresponding author. Email: [email protected]
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Abstract

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Sediment cores were collected from 2 sites in the forested fringe of an oxbow lake surrounded by land that was converted from forest to agricultural use in the late 19th century. The 2 sampling areas were selected to represent areas of high (West site) and low (East site) current sediment accumulation rates, based on distance from a perennially discharging stream. Modern (post settlement and land clearing) sediment accumulation rates were calculated using 210Pb and 137Cs on bulk sediment samples from 2 cores from each site. Two additional cores were collected from each site for radiocarbon analysis of twig cellulose with the assumption that most twigs in the sediment within the forested fringe fell from overhead and are contemporaneous with the sediment. Only the West site, however, yielded sufficient identifiable twig material for analysis. Modern sediment accumulation rates based on 210Pb and 137Cs fall between 0.2–0.4 cm/yr at the East site, and 0.7–1.3 cm/yr at the West site (nearest the stream inlet), with approximate agreement between the 210Pb and 137Cs methods. Modern sediment accumulation rate based on bomb-pulse 14C activity of twigs from cores from the West site is approximately 1.0 cm/yr, in agreement with the 210Pb and 137Cs results. Historic sediment accumulation rates were estimated at the West site using twigs from deeper intervals with pre-bomb 14C activity. Sediment covering approximately 1000 yr of pre-settlement sediment accumulation exhibited evidence of minor bioturbation or in-washing of reworked material, but with a clearly lower accumulation rate of less than 0.1 cm/yr.

Type
Part II
Information
Radiocarbon , Volume 46 , Issue 2: Proceedings of the 18th International Radiocarbon Conference (Part 2 of 2), Conference Editors: Nancy Beavan Athfield, Rodger J Sparks , 2004 , pp. 755 - 764
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

References

Björck, S, Wohlfarth, B. 2001. 14C chronostratigraphic techniques in paleolimnology. In: Last, WM, Smol, JP, editors. Tracking Environmental Change Using Lake Sediments. Volume 1: Basin Analysis, Coring, and Chronological Techniques. Dordrecht, the Netherlands: Kluwer Academic Publishers. p 205–45.Google Scholar
Cutshall, NH, Larson, IL, Olsen, CR. 1983. Direct analysis of 210Pb in sediment samples: self absorption correction. Nuclear Instruments and Methods in Physics Research B 206:309–17.Google Scholar
Dendy, FE, Boulton, GC. 1976. Sediment yield-runoff-drainage area relationships in the United States. Journal of Soil and Water Conservation 31:264–6.Google Scholar
Dukat, DA, Kuehl, SA. 1995. Non-steady-state 210Pb flux and the use of 228Ra/226Ra as a geochronometer on the Amazon continental shelf. Marine Geology 125:329–50.Google Scholar
Galicki, SJ. 2002. Bald cypress dendrochemistry and sediment geochemistry in a lake fringe wetland, Sky Lake, Mississippi [PhD dissertation]. Oxford: University of Mississippi, USA. 190 p.Google Scholar
Goodsite, ME, Rom, W, Heinemeier, J, Lange, T, Ooi, S, Appleby, PG, Shotyk, W, van der Knaap, WO, Lohse, C, Hansen, TS. 2001. High-resolution AMS 14C dating of post-bomb peat archives of atmospheric pollutants. Radiocarbon 43(2B):495–515.Google Scholar
Hai, PS, Son, PN, Dien, NN, Tan, VH, Hien, PD. 1999. Assessment of erosion and accretion in catchment areas based on 210Pb and 137Cs contents in soil and sediment. In: Stevenson, NR, editor. Isotope Production and Applications in the 21st Century. Proceedings of the 3rd International Conference on Isotopes, Vancouver, Canada, 6–10 September 1999. World Scientific, New Jersey. p 415–8.Google Scholar
Hoper, ST, McCormac, FG, Hogg, AG, Higham, TFG, Head, MJ. 1998. Evaluation of wood pretreatments on oak and cedar. Radiocarbon 40(1):45–50.Google Scholar
Krishnaswamy, S, Lal, D, Martin, JM, Meybeck, M. 1971. Geochronology of lake sediments. Earth and Planetary Science Letters 11:407–14.Google Scholar
Martin, EA, Rice, CA. 1981. Sampling and analyzing sediment cores for 210Pb geochronology. United States Geological Survey, Open-File Report 81–983.Google Scholar
Morton, RA, White, WA. 1995. Characteristics of and corrections for core shortening in unconsolidated sediments. Journal of Coastal Research 13:761–9.Google Scholar
Perkins, RW, Thomas, CW. 1980. Worldwide fallout. In: Hansen, WC, editor. Transuranic Elements in the Environment. Springfield, Virginia, USA: Technical Information Center. p 53–82.Google Scholar
Ritchie, JC, Cooper, CM, McHenry, JR. 1979. Recent accumulation of sediment in lakes in the Bear Creek watershed in the Mississippi Delta. Southern Geologist 20:173–80.Google Scholar
Ritchie, JC, Cooper, CM, McHenry, JR. 1986. Sediment accumulation rates in lakes and reservoirs in the Mississippi River Valley. In: Wang, SY, editor. Third International Symposium on River Sedimentation, The University of Mississippi, 31 March–4 April 1986. p 1357–65.Google Scholar
Ritchie, JC, Cooper, CM, McHenry, JR, Schiebe, FR. 1983. Sediment accumulation in Lake Chicot, Arkansas. Environmental Geology 5:79–82.Google Scholar
Ritchie, JC, McHenry, JR, Gill, AC. 1974. Fallout 137Cs in the soils and sediments of three small watersheds. Ecology 55:887–90.Google Scholar
Saucier, RT. 1994. Geomorphology and Quaternary geologic history of the lower Mississippi valley. United States Army Corps of Engineers, Vicksburg, Vol. II.Google Scholar
Stuiver, M, Reimer, PJ. 1993. Extended 14C data base and revised CALIB 3.0 14C age calibration program. Radiocarbon 35(1):215–30. Revision 4.4: http://radiocarbon.pa.qub.ac.uk/calib/.Google Scholar
Ursic, SJ, Dendy, FE. 1965. Sediment yields from small watersheds under various land uses and forest covers. U.S. Department of Agriculture, Miscellaneous Publication 970. p 47–52.Google Scholar