Editorial

Caseldine, Chris; Rodbell, Don; Turney, Chris S. M.

doi:10.1002/jqs.1159

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…In recent years, X-ray core scanning has gained enormously in popularity in the earth science community, providing detailed and rapid assessments of the physical and chemical characteristics of core sediments , and permitting the investigation and development of new lines of proxy data (Caseldine et al, 2008). One of the main advantages often cited in published work utilising X-ray core scanning is the non-destructive nature of the technique (e.g.…”

Section: Introductionmentioning

confidence: 99%

Is X‐ray core scanning non‐destructive? Assessing the implications for optically stimulated luminescence (OSL) dating of sediments

Davids

Roberts

Duller

2009

J Quaternary Science

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Davids, F., Roberts, H. M., Duller, G. A. T. (2009) Is X-ray core scanning non-destructive? Assessing the implications for optically stimulated luminescence (OSL) dating of sediments. Journal of Quaternary Science, 25 (3), pp. 348-353Optically stimulated luminescence (OSL) dating is widely used to date clastic deposits, including those collected by coring. X-ray scanning of cores has become popular because of the rapidly acquired, high-resolution information it gives about optical, radiographic and elemental variations. Additionally, X-ray scanning is widely viewed as a non-destructive method. However, such instruments use an intense X-ray beam that irradiates the split core to enable both X-radiographic and X-ray fluorescence (XRF) analysis. This irradiation will influence the optically stimulated luminescence signal in the sediments. This study determines the radiation dose delivered to sediments in a core during an X-ray scan, and assesses the implications for studies wishing to combine X-ray scanning and OSL dating.Peer reviewe

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Section: Introductionmentioning

confidence: 99%

Is X‐ray core scanning non‐destructive? Assessing the implications for optically stimulated luminescence (OSL) dating of sediments

Davids

Roberts

Duller

2009

J Quaternary Science

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Niah Cave (The West Mouth)

Barton

2020

Encyclopedia of Global Archaeology

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Testate amoebae and δ13C of Sphagnum as surface-moisture proxies in Alaskan peatlands

2010

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Testate amoebae and stable isotopes have been used as surface-moisture proxies in peatlands. However, adequate modern calibration is critical to successful application and interpretation. Testate amoebae, δ13C of Sphagnum, and environmental conditions were examined at 126 sites within 12 peatlands of south-central and central Alaska to assess the potential of testate amoebae and δ 13C as surface-moisture proxies. Results indicate that water-table depth and pH were both correlated with testate amoeba community composition. However, the relative importance of these two variables varied, with pH more important in wetter habitats and water-table depth more important in drier habitats. Cross-validation of transfer functions indicated that water-table depth and pH can be inferred from testate amoeba communities with mean errors of ~8 cm and ~0.4 pH units, respectively, an improvement over previous calibration work in the region. However, application of these transfer functions should consider potential temporal variability in the relative importance of pH and water-table depth, and we applied our calibration data set to a subfossil testate amoeba record to highlight how knowledge of changes in the relative importance of these environmental variables can inform interpretation. In contrast with testate amoebae, δ13C of Sphagnum was found to be a relatively weak indicator of water-table depth. Variable carbon sources for Sphagnum photosynthesis, such as CO2 released by methanotrophic bacteria, likely complicate the relationship between δ 13C and moisture. Although more work is needed before δ13C of Sphagnum can be used as a proxy for water-table depth, testate amoebae should be useful in paleoenvironmental studies of peatlands in Alaska.

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Editorial

Cited by 3 publications

References 24 publications

Is X‐ray core scanning non‐destructive? Assessing the implications for optically stimulated luminescence (OSL) dating of sediments

Is X‐ray core scanning non‐destructive? Assessing the implications for optically stimulated luminescence (OSL) dating of sediments

Niah Cave (The West Mouth)

Testate amoebae and δ13C of Sphagnum as surface-moisture proxies in Alaskan peatlands

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