Overbank sediments : a natural bed blending sampling medium for large—scale geochemical mapping

Bölviken, B.; Bogen, Jim; Jartun, Morten; Langedal, Marianne; Ottesen, Rolf Tore; Volden, Tore

doi:10.1016/j.chemolab.2004.06.006

Cited by 50 publications

(31 citation statements)

References 23 publications

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“…Modern anthropogenic inputs coming from, for example, fly ashes, polluted flood sediments, the application of (artificial) manure, sewage effluents or pesticides and insecticides are known to have profound chemical effects on soils (Marcos et al, 1998;Qafoku et al, 1999;Bølviken et al, 2004;SanchezMartin et al, 2007;Golia et al, 2008). The latter three input sources are especially important since significant quantities of land are managed as farmlands.…”

Section: Background and Rationale Of Soil Chemical Investigations In mentioning

confidence: 97%

Geochemistry as an aid in archaeological prospection and site interpretation: current issues and research directions

Oonk

Slomp

Huisman

2009

Archaeological Prospection

122

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Human habitation may significantly affect the chemical soil composition leading to enrichments and depletions of specific chemical elements and the formation of archaeological soils. Prospection and interpretation of sitesby means of element analysis of soils requires appropriate and well-tested geochemical methodologies. In this paper element analysis in archaeological prospection and site interpretation is briefly reviewed and three major unresolved issues are discussed: (i) how to distinguish archaeological chemical signals in soils from modern and geogenic signals; (ii) what role do geochemical processes play in the formation of archaeological soils; (iii) how to implement geochemical methods in archaeological research programmes.These issues are addressed with reference to the geochemical literature on retention and sequestration pathways of presumed anthropogenic elements in soils and analytical procedures. Based on the acquired knowledge, several directions for future research are proposed.

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Section: Background and Rationale Of Soil Chemical Investigations In mentioning

confidence: 97%

Geochemistry as an aid in archaeological prospection and site interpretation: current issues and research directions

Oonk

Slomp

Huisman

2009

Archaeological Prospection

122

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“…Metals can be redistributed by chemical remobilisation and due to bioturbation by plant roots or burrowing animals. However, in most cases, except for specific geomorphological and geochemical conditions (Bølviken et al 2004;Hudson-Edwards et al 1998;Taylor 1996), vertical metal redistribution in overbank deposits is a slow process (Bølviken et al 2004). Considering the relatively short accretion time of the sediment profiles studied, it seems that at least the synchronously occurring peaks of zinc and nickel concentrations used for estimating the deposition rate have not been lowered considerably.…”

Section: Estimates Of Deposition Ratesmentioning

confidence: 97%

“…Floodplain sediment sequences can preserve information on the history of contamination in the river system as well as on the spatial and temporal patterns of floodplain accumulation. Changes in the chemical composition of overbank sediments, including pollutants and various geogenic and anthropogenic tracers which are closely associated with suspended sediment, reflect variable contributions from sediment sources located upstream (Ottesen et al 1989;Bølviken et al 2004). For example, changes of trace metal concentrations in the vertical profiles of overbank sediments can reflect concomitant changes in river pollution (Swennen et al 1994;Macklin et al 1994;Matschullat et al 1997).…”

mentioning

confidence: 98%

Simultaneous Use of Trace Metals, 210Pb and 137Cs in Floodplain Sediments of a Lowland River as Indicators of Anthropogenic Impacts

Łokas

Wachniew

Ciszewski

et al. 2009

Water Air Soil Pollut

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This study focuses on the distribution of selected trace metals, 137 Cs and 210 Pb, in floodplain deposits of the lowland Warta River (southern Poland) downstream of Częstochowa, a large city with an iron smelter. The depth profiles of trace metal (Zn, Pb, Cu, Ni, Cd and Mn), 210 Pb and 137 Cs contents in floodplain sediments were used to derive deposition rates on the floodplain for the twentieth century. The applicability of particular chronometric tools is considered within the context of their mutual relationships and confirmed by the consistency of the results. Deposition rate estimates for the past 50 years based on the vertical patterns of trace metal concentrations, which were correlated with particular events in the development of the smelter, range from 0.4 cm·year −1 in profiles situated in backswamps far from the channel to over 1.1 cm·year −1 in profiles of the natural levee adjacent to the river. Deposition rates based on 210 Pb inventories in the profiles range from 0.08 to 0.66 g·cm −2 ·year −1 , which corresponds to linear sedimentation rates of 0.10 to 0.91 cm·year −1 , respectively. Dating of characteristic levels associated with peak fallout of 137 Cs gives sediment accretion rates resembling those obtained from trace metals and 210 Pb. The period of the highest sediment accumulation rate could be related to the highest loads of effluent from the iron smelter and city of Często-chowa, which were substantially reduced after the construction of effluent treatment plant.

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“…Overbank or floodplain sediments are a common sampling medium in geochemical surveys (e.g. Ottesen et al 1989;Volden et al 1997;Xie & Cheng 1997;Bølviken et al 2004). Those sediments can reasonably be assumed to best represent well-mixed, fine-grained composite samples of major rock and soil types present in the upstream catchments.…”

Section: Sampling Mediummentioning

confidence: 99%

A continental-scale geochemical atlas for resource exploration and environmental management: the National Geochemical Survey of Australia

Caritat

Cooper

2015

GEEA

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Abstract:The National Geochemical Survey of Australia (NGSA) was carried out to bridge a vast knowledge gap about the concentration and distribution of chemical elements at the Earth's surface in Australia and consequent poor understanding of processes controlling their distribution here. The aim of the project was to contribute to improving exploration for energy and mineral resources through the pre-competitive delivery of a new spatial layer of compositional data and information.Surface (0-10 cm depth) and shallow (c. 60-80 cm) samples of catchment outlet sediments were collected from 1315 sites located near the outlet of 1186 catchments (c. 10% of which were sampled in duplicate) from across Australia. The total area covered by the survey was 6.174 million km 2 , or c. 81% of Australia, at an average sampling density of 1 site per c. 5200 km 2 . A number of field parameters (e.g. soil colour, pH), bulk parameters (e.g. electrical conductivity, particle size distribution) and geochemical parameters (i.e. multi-element composition of dry sieved <2 mm and <75 μm grain-size fractions) were determined. The grain-size fractions were analysed to determine (1) total, (2) aqua regia soluble, and (3) Mobile Metal Ion (MMI®) extractable element contents.These data were collated into a spreadsheet and graphically represented as a series of 529 geochemical maps (http://www. ga.gov.au/ngsa). These constitute the first continental-scale series of geochemical maps for Australia based on internally consistent, state-of-the-art data pertaining to the same sampling medium collected, prepared and analysed in a uniform and thoroughly documented manner and over a short time period. They are being used to better understand the accumulation, mobility and significance of chemical elements in the near-surface environment. Applications to date and ongoing and future directions are discussed.Supplementary material: Appendices 1-4 of summary statistics are available at http://www.geolsoc.org.uk/SUP18853

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Overbank sediments : a natural bed blending sampling medium for large—scale geochemical mapping

Cited by 50 publications

References 23 publications

Geochemistry as an aid in archaeological prospection and site interpretation: current issues and research directions

Geochemistry as an aid in archaeological prospection and site interpretation: current issues and research directions

Simultaneous Use of Trace Metals, 210Pb and 137Cs in Floodplain Sediments of a Lowland River as Indicators of Anthropogenic Impacts

A continental-scale geochemical atlas for resource exploration and environmental management: the National Geochemical Survey of Australia

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