Weathering rates and 87Sr/86Sr ratios: An isotopic approach

Åberg, Göran; Jacks, Gunnar; Hamilton, P. J.

doi:10.1016/0022-1694(89)90007-3

Cited by 171 publications

(66 citation statements)

References 10 publications

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“…As a result, snail shell 87 Sr/ 86 Sr are usually biased towards values for soil carbonates, which also seems to be the case for the snail shells analyzed in this study. Together, these observations strongly suggest that snail shells are unsuitable for providing accurate estimates of biosphere 87 Sr/ 86 Sr. Sr/ 86 Sr that ends up in vegetation ultimately results from weathering of bedrock, as well as atmospheric deposition of material from outside the region (Åberg et al, 1989;Graustein and Armstrong, 1983;Nakano et al, 2001;Poszwa et al, 2004). As nutrient assimilation by the plant from the soil is affected by plant anatomy (root systems) as well as plant physiology (e.g., Sr cycling), which vary according to the species of plant (Poszwa et al, 2004), it is not altogether surprising to observe Sr/ 86 Sr between that of ground vegetation and that found in tree leaves.…”

Section: Soil Leachatesmentioning

confidence: 99%

Bioavailable 87Sr/86Sr in different environmental samples — Effects of anthropogenic contamination and implications for isoscapes in past migration studies

Maurer

Galer

Knipper

et al. 2012

Science of The Total Environment

213

190

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Sr/ 86 Sr reference maps (isoscapes) are a key tool for investigating past human and animal migrations. However, there is little understanding of which biosphere samples are best proxies for local bioavailable Sr when dealing with movements of past populations. In this study, biological and geological samples (ground vegetation, tree leaves, rock leachates, water, soil extracts, as well as modern and archeological animal teeth and snail shells) were collected in the vicinity of two early medieval cemeteries ("Thuringians", 5-6th century AD) in central Germany, in order to characterize 87 Sr/ 86 Sr of the local biosphere. Animal tooth enamel is not appropriate in this specific context to provide a reliable 87 Sr/ 86 Sr baseline for investigating past human migration. Archeological faunal teeth data (pig, sheep/goat, and cattle) indicates a different feeding area compared to that of the human population and modern deer teeth 87 Sr/ 86 Sr such as freshwater bivalve shells and tree cores were examined in order to track potential historic anthropogenic contamination of the water and the vegetation. The data obtained from the archeological bivalve shells show that the modern rivers yield 87 Sr/ 86 Sr ratios which are similar to those of the past. However, the tree cores registered decreasing 87 Sr/ 86 Sr values over time towards present day likely mirroring anthropogenic activities such as forest liming, coal mining and/or soil acidification. The comparison of 87 Sr/ 86 Sr of the Thuringian skeletons excavated in the same area also shows that the vegetation samples are very likely anthropogenically influenced to some extent, affecting especially 87 Sr/ 86 Sr of the shallow rooted plants.

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Section: Soil Leachatesmentioning

confidence: 99%

Bioavailable 87Sr/86Sr in different environmental samples — Effects of anthropogenic contamination and implications for isoscapes in past migration studies

Maurer

Galer

Knipper

et al. 2012

Science of The Total Environment

213

190

View full text Add to dashboard Cite

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“…Examples include the application of 87 Sr/ 86 Sr measurements to elucidate marine chronostratigraphy (Veizer 1989, McArthur andHowarth 2004), mineral weathering (Å berg et al 1989, Clow et al 1997, Horton et al 1999, surface water and groundwater interactions (Négrel andPetelet-Giraud 2005, Vengosh et al 2007), and water source mixing (Hogan et al 2000, Land et al 2000. Recent publications have demonstrated that 87 Sr/ 86 Sr is useful for understanding the provenance of water (Evans et al 2009, Voerkelius et al 2010, which has forensic implications for sourcing individuals (Rauch et al 2007) or for investigating the origin of waters with particular properties (i.e., natural mineral waters) (Montgomery et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Strontium isotopes in tap water from the coterminous USA

et al. 2012

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“…Atmospheric acid deposition and its affect on streams and lakes was an early area of investigation that combined soil hydrochemistry, atmospheric deposition rates and chemistry with surface water chemistry (Likens et al, 1977(Likens et al, , 1996Probst et al, 1990). Silicate weathering rates and the fluxes of weathered product including its link to carbon cycle models provided further progress in the understanding of these complex catchment systems (Aberg et al, 1989;Edmond et al, 1995;Kump et al, 2000;Shand et al, 2007). Added to the above geochemical focused studies are hydrologic investigations in which Published by Copernicus Publications on behalf of the European Geosciences Union.…”

Section: Introductionmentioning

confidence: 99%

The significance and lag-time of deep through flow: an example from a small, ephemeral catchment with contrasting soil types in the Adelaide Hills, South Australia

Bestland

Milgate

Chittleborough

et al. 2009

Hydrol. Earth Syst. Sci.

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Abstract. The importance of deep soil-regolith through flow in a small (3.4 km2) ephemeral catchment in the Adelaide Hills of South Australia was investigated by detailed hydrochemical analysis of soil water and stream flow during autumn and early winter rains. In this Mediterranean climate with strong summer moisture deficits, several significant rainfalls are required to generate soil through flow and stream flow [in ephemeral streams]. During autumn 2007, a large (127 mm) drought-breaking rain occurred in April followed by significant May rains; most of this April and May precipitation occurred prior to the initiation of stream flow in late May. These early events, especially the 127 mm April event, had low stable water isotope values compared with later rains during June and July and average winter precipitation. Thus, this large early autumn rain event with low isotopic values (δ18O, δD) provided an excellent natural tracer. During later June and July rainfall events, daily stream and soil water samples were collected and analysed. Results from major and trace elements, water isotopes (δ18O, δD), and dissolved organic carbon analysis clearly demonstrate that a large component of this early April and May rain was stored and later pushed out of deep soil and regolith zones. This pre-event water was identified in the stream as well as identified in deep soil horizons due to its different isotopic signature which contrasted sharply with the June–July event water. Based on this data, the soil-regolith hydrologic system for this catchment has been re-thought. The catchment area consists of about 60% sandy and 40% clayey soils. Regolith flow in the sandy soil system and not the clayey soil system is now thought to dominate the deep subsurface flow in this catchment. The clayey texture contrast soils had rapid response to rain events and saturation excess overland flow. The sandy soils had delayed soil through flow and infiltration excess overland flow. A pulse of macropore through flow was observed in the sandy soils three days after the rainfall event largely ended. The macropore water was a mixture of pre-event and event water, demonstrating the lag-time and mixing of the water masses in the sandy soil system. By contrast, the clayey soil horizons were not dominated by pre-event water, demonstrating the quicker response and shallow through flow of the clayey soil system. Thus, the sandy terrain has a greater vadose zone storage and greater lag time of through flow than the clayey terrain.

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Weathering rates and 87Sr/86Sr ratios: An isotopic approach

Cited by 171 publications

References 10 publications

Bioavailable 87Sr/86Sr in different environmental samples — Effects of anthropogenic contamination and implications for isoscapes in past migration studies

Bioavailable 87Sr/86Sr in different environmental samples — Effects of anthropogenic contamination and implications for isoscapes in past migration studies

Strontium isotopes in tap water from the coterminous USA

The significance and lag-time of deep through flow: an example from a small, ephemeral catchment with contrasting soil types in the Adelaide Hills, South Australia

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