Reassessment of WD-XRF method for obsidian provenance shareable databases

Acquafredda, Pasquale; Muntoni, Italo M.; Pallara, Mauro

doi:10.1016/j.quaint.2017.08.020

Cited by 18 publications

(30 citation statements)

References 17 publications

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“…The measurements obtained by WD-XRF can be compared only with other WD-XRF values produced in other research laboratories, with the only restrictions that X-ray intensities must be measured as background and interference free (Appendix -Table 1) and on samples with dimensions ranging from 5 mm to 5.15 cm (Acquafredda et al, 2018).…”

Section: Petroarchaeometric Investigationsmentioning

confidence: 99%

“…The obsidian samples whose surface was particularly altered, to the extent that it did not permit the glass SEM analysis, were characterized with the WD-XRF technique using a PANalytical AXIOS-Advanced XRF spectrometer, equipped with a 4 kW Rh super sharp end window X-ray tube. The peak intensity ratio of trace elements such as Rb, Sr, Y, Zr and Nb, that are contiguous in the Periodic Table of Elements, provides accurate information on the obsidian source area (De Francesco, Bocci, & Crisci, 2011;Acquafredda et al, 2018). The X-ray intensities of these trace elements were measured under the following operating conditions of the XRF spectrometer: X-ray tube power supply 60 kV and 66 mA; scintillator detector to collect the X-ray lines dispersed by a LiF 220 crystal (Acquafredda et al, 2018).…”

Section: Petroarchaeometric Investigationsmentioning

confidence: 99%

“…For the X-ray measurements, obsidian artefacts whose length must not exceed 5.15 cm were gently positioned in the middle of a thin sheet of Mylar© (Fig. 4) which is perfectly transparent to the detected X-rays lines (Rb, Sr, Y, Zr and Nb Kα lines), used to close the XRF spectrometer sample holder below (Acquafredda et al, 2018). The X-ray intensity ratios measured (Appendix -Table 1) were compared with the literature data on different geological obsidian sources of the Mediterranean basin (Acquafredda et al, 2018(Acquafredda et al, , 2019.…”

Section: Petroarchaeometric Investigationsmentioning

confidence: 99%

“…During the past 25 years, a systematic programme for determining obsidian provenance at the Dipartimento di Scienze della Terra e Geoambientali of Bari University, has provided a well-defined outline of the various geological derivation outcrops (Acquafredda et al, 1999;Acquafredda & Paglionico, 2004;Acquafredda, Muntoni, & Pallara, 2018;Acquafredda, 2019). Moreover, in the last two decades, from 2000 to 2018, an intense activity of exploration of archaeological deposits in caves was carried out in close collaboration between the Università degli Studi di Bari Aldo Moro (Bari, Italy), the Centro Regionale di Speleologia "Enzo dei Medici" (Cosenza, Italy) and the Università del Molise (Campobasso, Italy).…”

Section: Introductionmentioning

confidence: 99%

“…Plots of the SEM-EDS and WD-XRF X-ray analyses of obsidian artefacts collected in the five studied karst archaeological sites (Grotta della Monaca, Grotta del Tesauro, Grotta Pietra Sant'angelo, Grotta di Polla and Grotta di Santa Barbara) present in Southern Italy; for the explanation of the sample treatment see text. The literature data on different geological obsidian sources of the Mediterranean basin are fromAcquafredda et al, 1999Acquafredda et al, , 2018Acquafredda et al, , 2019. Sub-sources outcrops: Monte Arci, S.C. = Perdas Urias; S.A. = Conca Cannas, Canale Perdera and Riu Solacera.…”

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confidence: 99%

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Petroarcheometric Analysis on Obsidian Artefacts Found Within Some Neolithic – Eneolithic Period Caves of Southern Italy

Acquafredda

Larocca²,

Minelli

et al. 2020

Open Archaeology

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In the last twenty years, obsidian artefacts have been found in important and often extensive karst cavities in Southern Italy: three located in Calabria (Grotta della Monaca, and Grotta del Tesauro, in Sant’Agata di Esaro, Cosenza; Grotta Pietra Sant’Angelo in San Lorenzo Bellizzi, Cosenza), one in Puglia (Grotta di Santa Barbara in Polignano a Mare, Bari) and another in Campania (Grotta di Polla, Salerno). All these sites, that have returned a total of 151 obsidian tools, were connected to human frequentation of the underground environments that occurred during the Holocene, which can be precisely located in the vast period between the Neolithic and the Eneolithic (6th–4th millennium BC). They are mainly blades and bladelets, but also burins together with scrapers and cores, generally of small dimensions. SEM-EDS and WD-XRF absolutely non-destructive analyses carried out on these items have shown that all samples have a source area in the obsidian outcrops of the island of Lipari (Messina, Italy). These data confirm that the Aeolian island of Lipari furnished the privileged obsidian extraction outcrops for most of the Neolithic and Eneolithic archaeological sites of Southern Italy.

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Section: Petroarchaeometric Investigationsmentioning

confidence: 99%