LA-ICP-MS analysis of African glass beads: Laboratory inter-comparison with an emphasis on the impact of corrosion on data interpretation

Dussubieux, Laure; Robertshaw, Peter; Glascock, Michael D.

doi:10.1016/j.ijms.2008.11.003

Cited by 123 publications

(69 citation statements)

References 26 publications

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“…In order to determine elements with concentrations in the range of parts-per-million (ppm) and below, the single point analysis mode with a laser beam diameter of 100 μm, operating at 70% of the laser energy (0.2 mJ) and a pulse frequency of 15 Hz was employed. A pre-ablation time of 20 s was set up in order to eliminate the transient part of the signal and ensure that surface contamination or corrosion did not affect the results of the analysis (Dussubieux et al, 2009). The laser vaporizes a volume of material corresponding to a cylinder with a diameter of 100 μm.…”

Section: Methodsmentioning

confidence: 99%

A comparison of instrumental techniques at differentiating outcrops of Edwards Plateau chert at the local scale

Speer

2016

Journal of Archaeological Science: Reports

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a b s t r a c t Available online xxxxThis study compares two widely accepted analytical techniques, Laser Ablation-Inductively Coupled PlasmaMass Spectrometry (LA-ICP-MS) and Instrument Neutron Activation Analysis (INAA). These techniques are compared and contrasted to determine the composition of intra-formation Edwards Plateau chert. As a case study, three unique chert outcrops only several hundred meters apart (hyper-local (Speer 2014)) at the Gault Site (41BL323) in central Texas were tested with each of the techniques. The differences of each instrumental technique on Edwards Plateau chert is assessed using the geochemical data retrieved. The geochemical data were evaluated with multivariate statistics in order to determine which instrumental technique is most effective at distinguishing between these three unique Edwards Plateau chert outcrops. This study also seeks to determine if either of the instrumental techniques can effectively separate out geochemical differences of Edwards Plateau chert outcrops.

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Section: Methodsmentioning

confidence: 99%

A comparison of instrumental techniques at differentiating outcrops of Edwards Plateau chert at the local scale

Speer

2016

Journal of Archaeological Science: Reports

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“…However, various published articles reported some discrepancies between their measured analyses of some elements in the Corning glasses and the published recommended compositions (including KuismaKursula and Räisänen, 1999;Kuisma-Kursula, 2000;Bronk and Freestone, 2001;Falcone et al, 2002;Vicenzi et al, 2002;Shortland et al, 2007;Dussubieux et al, 2008;Wagner et al, 2008;Dussubieux et al, 2009). This prompted the study by Wagner et al (2012) with the purpose of testing the published recommended compositions of the Corning glasses and where needed, suggesting new values for some elements.…”

Section: Overview Of the Corning Archaeological Reference Glassesmentioning

confidence: 99%

The Corning Archaeological Reference Glasses: New Values for “Old” Compositions

Adlington

2017

Papers From the Institute of Archaeology

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The Corning Archaeological Reference Glasses are widely used as standards in the chemical analysis of archaeological and historical glasses, as their compositions were designed to approximate those of major glass types in antiquity. Since their development in the 1960s, their compositions have been revisited and updated. This paper provides a brief overview of the Corning glasses, and addresses two of the last three elements to be re-evaluated: the recommended values for the concentrations of SO 3 and Cl were, until now, based on theoretical values. Data for these elements were collected using electron microprobe, and used together with published data to suggest new values. Finally, a complete list with the most up-to-date compositions for the four Corning glasses is compiled for the benefit of other analysts.

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“…She has also focused on identifying the trade networks through which the glass beads reached southern Africa. Of late, scholars have applied technologies from other sciences in a bid to answer questions relating to the origins of various glass beads found in the interior and refine Wood's chronology (Dussubieux et al 2009;Robertshaw et al 2010;Koleini et al 2015). Robertshaw et al (2010) Mapungubwe, where artificial tiered platforms were constructed around kopjes, dwalas and large boulders (Robinson 1959;Summers 1971;Pikirayi 2013).…”

Section: Materials Culture Studies In Southern Africamentioning

confidence: 99%

An archaeological study of the Zimbabwe Culture capital of Khami, southwestern Zimbabwe

Mukwende¹

2016

Azania: Archaeological Research in Africa

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This study sought to understand the archaeology of the Zimbabwe Culture capital of Khami through synchronic and diachronic analyses of its material culture. The research employed a number of methodological approaches that included a review of historic documents, surveying and mapping, excavations, museum collection analysis, and artefact studies, in order to collect datasets from various sections of the site, including the walled and the nonwalled areas. The main indication is that there is a great deal of similarity in material culture distribution across the whole site. An analysis of objects by stratigraphic sequence exposes continuity and change in local and imported objects. Dry stone-wall architectural data suggests that the site was constructed over a long period, with construction motivated by a number of expansionary factors. The study confirms that Khami began as a fully developed cultural unit, with no developmental trajectory recorded at Mapungubwe or Great Zimbabwe, where earlier ceramic units influenced later ones. Consequently, this study cautiously suggests that Khami represents a continuity with the Woolandale chiefdoms that settled in the south-western parts of the country and in the adjacent areas of Botswana. On the basis of the chronological and material culture evidence, Khami is unlikely to have emerged out of Great Zimbabwe. However, more research is needed to confirm these emergent conclusions, and to better understand the chronological and spatial relationships between not just Woolandale and Khami sites but also Khami and the multiple Khami-type sites scattered across southern Zambezia.ii ACKNOWLEDGEMENTS

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LA-ICP-MS analysis of African glass beads: Laboratory inter-comparison with an emphasis on the impact of corrosion on data interpretation

Cited by 123 publications

References 26 publications

A comparison of instrumental techniques at differentiating outcrops of Edwards Plateau chert at the local scale

A comparison of instrumental techniques at differentiating outcrops of Edwards Plateau chert at the local scale

The Corning Archaeological Reference Glasses: New Values for “Old” Compositions

An archaeological study of the Zimbabwe Culture capital of Khami, southwestern Zimbabwe

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