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Amorphous glass fragments from archaeological surface surveys: Potential chronological use of ion beam and isotopic analytical characterization

AuthorsZucchiatti, A.; Climent-Font, A.; Gutiérrez-Neira, P. C. ; Montero Ruiz, Ignacio ; Fuenlabrada, J. M.; Galindo, C.
KeywordsDiscriminant analysis
Provenance analysis
Roman glass
Issue Date2018
CitationJournal of Archaeological Science: Reports 19: 439- 453 (2018)
AbstractAnalytical techniques have been used to implement the archaeological information from surface surveys. Wehave shown that the compositional comparison of amorphous samples, e.g. glass, can provide importantchronological information when compared withfindings from other sites. A group of 61 glass fragments, re-covered from an archaeological surface survey at the site of the Roman city of Duratón (1st to 3rd century AD),near Segovia, Spain, have been analysed by combined Particle Induced X-ray/Gamma-ray Emission (PIXE-PIGE) techniques and by isotope dilution mass spectrometry. Four groups of objects were identified. The largest groupby far, corresponds to the typical sodium-rich natron-made Roman glass. Compared with data reported inprevious studies, including a few on the Iberian Peninsula, the composition of Duratón natron glass is similar tothat of the widespread Roman 1st–3rd century AD glasses. The glasses of the nearby Patones, six of which havebeen analysed in this study, belong, on the contrary, to the so-called HIMT glass. This is compatible with thesoda-lime-silica glass pattern observed in the Western Mediterranean. HIMT glass is dominant in this area fromthe 4th century onward. HIMT glass products are much easier to make and less expensive. Strontium andneodimium isotope analysis confirms the compositional proximity of the Duratón glasses to three groups of1st–3rd century samples from Barcino, Lyon and the Iulia Felix wreck and point to a production of the glass inthe Eastern Mediterranean. Pliny the Elder in his Naturalis Historia had specifically mentioned the glass pro-duction of Hispania and Gallia, which should hopefully be confirmed by thefindings in the correspondingregional sites. This is the case for Gallia but not yet for the Iberian Peninsula, where few Roman glass analyseshave been completed.
Identifiersdoi: https://doi.org/10.1016/j.jasrep.2018.03.015
issn: 2352-409X
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