Interpretation of210Pb profiles and verification of the CRS dating model in PIRLA project lake sediment cores

Binford, Michael W.; Kahl, Jeffrey S.; Norton, Stephen A.

doi:10.1007/bf00677218

Cited by 69 publications

(22 citation statements)

References 35 publications

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“…Another reason for using the CIC model is the relatively long residence time of the sea water, long enough to allow all available 210 Pb in the water column to be deposited on the sediment bed (Appleby et al, 1979;Binford et al, 1993;Blais et al, 1995). Finally, the almost exponential form of 210 Pb profile as stated by Appleby and Oldfield (1983) was the third argument in the favor of CIC model.…”

Section: Resultsmentioning

confidence: 99%

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Concordant 210Pb and 137Cs ages of black sea anoxic unconsolidated sediments

et al. 2011

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Two independent geochronologic radiometric methods:137 Cs and 210 Pb were used to determine the sedimentation rate and subsequently to date the oldest sediments of a 50 cm core containing unconsolidated sediments collected at a depth of 600 m below sea surface in the anoxic zone of the Western Black Sea, off the Romanian town of Constanta. Both methods gave coincident value within experimental uncertainties of 0.42±0.20 mm·y -1 for 137 Cs and 0.49±0.03 mm·y -1 in the case of 210 Pb, within the Constant Initial Concentration model, which gave for the lower most sediments an age of 1.00±0.01 ka. The constant sedimentation model as well as the possible causes of observed discrepancy between experimental uncertainties are discussed.

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Section: Resultsmentioning

confidence: 99%

“…The CIC models has been applied successfully in large lakes or seas while the CRS models works best in medium-sized or small lakes (Binford, 1993).…”

Section: Pb Dating Modelsmentioning

confidence: 99%

Concordant 210Pb and 137Cs ages of black sea anoxic unconsolidated sediments

et al. 2011

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“…Other occasionally used time-markers originate from contamination events by specific organic compounds (e.g., polychlorinated biphenyls) or metals (e.g., stable Pb) as well as from emissions of ashes and soot particles from volcanic eruptions, wildfires and high temperature combustion of fossil fuels (Rendberg and Wick, 1984;Binford et al, 1993;Rose and Appleby, 2005). The increase in the relative abundance of Ambrosia pollen (ragweed), attributed to intense deforestation, has also occasionally been used to constrain 210 Pb-derived dates (Robbins et al, 1978;Binford et al, 1993;Blais et al, 1995;Appleby, 2001).…”

Section: Introductionmentioning

confidence: 99%

Upper Mississippi Pb as a mid-1800s chronostratigraphic marker in sediments from seasonally anoxic lakes in Eastern Canada

Gobeil

Tessier

Couture

2013

Geochimica et Cosmochimica Acta

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“…One set of floodplain core samples were sieved to <2 mm for radiometric dating using Pb-210 and Cs-137 that were measured at Plymouth University, UK. Agedepth profiles were based on the Constant Rate of Supply (CRS) model to determine the ages of the cores' sediment layers (Appleby and Oldfield, 1983;Binford et al, 1993;Cohen, 2003;Mabit et al, 2014). Measurements of Cs-137 were used to constrain the Pb-210-based chronology (Mabit et al, 2014).…”

Section: Sampling and Laboratory Methodsmentioning

confidence: 99%

Effects of a small-scale, abandoned gold mine on the geochemistry of fine stream-bed and floodplain sediments in the Horsefly River watershed, British Columbia, Canada

et al. 2014

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Mining is known to be a major source of metal contamination for fluvial systems worldwide. Monitoring and understanding the effects on downstream water and sediment quality is essential for its management and to mitigate against detrimental environmental impacts. This study aimed to examine the effects of the small-scale, abandoned, hydraulic Black Creek gold mine on the geochemical content of fine (<63 mm) stream bed and floodplain sediment in the Horsefly watershed (British Columbia, Canada), which is a part of the Quesnel River basin. Concentrations of As, Cd, Se and Zn were determined by aqua regia digestion and the modified BCR (European Community Bureau of Reference) sequential extraction procedure followed by inductively coupled plasma-optical emission spectroscopy or inductively coupled plasma-mass spectrometry. Age-depth models for the floodplain cores were constructed using excess Pb-210 and Cs-137 activity concentration profiles. The results show that the mine caused local As contamination of the Horsefly River floodplain sediment during the first years of operation, but at present the contamination is mainly contained in the Black Creek. Present-day and recent concentrations of Cd, Se and Zn in the Horsefly River are elevated and this is probably derived from other upstream mining activities. The spatial and temporal changes in heavymetal concentrations suggest a slight, but not particularly widespread, mining effect on the finesediment geochemistry in the Horsefly River system.

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Interpretation of210Pb profiles and verification of the CRS dating model in PIRLA project lake sediment cores

Cited by 69 publications

References 35 publications

Concordant 210Pb and 137Cs ages of black sea anoxic unconsolidated sediments

Concordant 210Pb and 137Cs ages of black sea anoxic unconsolidated sediments

Upper Mississippi Pb as a mid-1800s chronostratigraphic marker in sediments from seasonally anoxic lakes in Eastern Canada

Effects of a small-scale, abandoned gold mine on the geochemistry of fine stream-bed and floodplain sediments in the Horsefly River watershed, British Columbia, Canada

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