O Projeto Outeiro do Circo com comunicação aceite no 30º Congresso Anual da European Association of Archaeologists (EAA), a ter lugar em Roma, entre os dias 28 e 31 de Agosto de 2024.
O trabalho "Tracing lithic raw materials from Outeiro do Circo (Beja, Portugal) - portable X-Ray Fluorescence (pXRF) utility", da autoria de Sofia Soares (LNEG), Teresa Silva (LNEG), Miguel Serra (CEAACP), Eduardo Porfírio (CEAACP) e Sofia Silva, está inserido na sessão "From Lab to Field, from Vertical to Horizontal. New approaches to the use of portable X-Ray Fluorescente (pXRF) in archaeology".
O documento submetido incide na caraterização geoquímica de artefactos líticos, maioritariamente denticulados de foice, através da utilização de equipamento portátil de Fluorescência de Raio-X e na sua comparação com os resultados obtidos por outros métodos, com o objetivo de identificar as "impressões digitais" químicas que permitam relacionar os artefactos líticos com os tipos de rocha da região.
O presente estudo resulta da colaboração com o Laboratório Nacional de Energia e Geologia - LNEG, realizado por Sofia Soares, consultora científica do Projeto Outeiro do Circo na área da geologia.
Resumo/Abstract:
The Late Bronze Age settlement of Outeiro do Circo in Beja, Portugal underwent archaeological excavations from
2008 to 2021. During these excavations, the lithic industry identified shows the maintenance of ancient traditions,
that reveal a former chalcolithic occupation, but mainly the presence of an important set of lithic artefacts, mostly
made up of sickle elements, which played an important role in some essential activities, to the Late Bronze Age
community, such as agriculture. This paper focuses on the chemical characterization of the lithic materials found at
the archaeological site using portable X-ray fluorescence (XRF) equipment. The results obtained from this technique
were compared with those obtained from other techniques such as X-ray diffraction (XRD) and Raman spectroscopy.
The aim was to establish "chemical fingerprints" that can be used to correlate the lithic materials with the different
rock types found in the area. The preliminary results of this study are presented and discussed. Additionally, the
utility of portable X-ray fluorescence as a non-destructive technique for determining the provenance of lithic materials
is evaluated. In summary, this paper provides insights into the lithic industry found at the Late Bronze Age settlement
of Outeiro do Circo and to the use of portable X-ray fluorescence, along with other techniques, for the determination
of lithic raw materials.
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