Encontrados 12 documentos, a visualizar página 1 de 2

Characterization of the metallurgical activities in the House attributed to Can...

The study of materials from Casa de Cantaber (p‑EDXRF and micro‑EDXRF), in Conimbriga, allows to contextualize the traces of metallurgical activity there known in the process of refining gold by liquidation. The context chronology (5th century AD) is presented; its implantation in the building is discussed; and the conclusions that can be drawn from it are presented.

Yttrium and rare earth elements fractionation in salt marsh halophyte plants

Salt marshes act as natural deposits of different metals (e.g. heavy-metals), while halophyte plants are known to retain and accumulate them in the different tissues. Scarce data exists on accumulation, partition and fractionation of YREE in these plants. To study the relationship between halophyte plants and YREE, contents of these metals were determined by ICP-MS in sediment, and in the different plants organ...

Metal alloys, matrix inclusions and manufacturing techniques of Moinhos de Gola...

A collection of 35 metallic artefacts comprising various typologies, some of which can be attributed to the Bronze Age and others to later periods, were studied to provide detailed information on elemental composition, manufacturing techniques and preservation state. Elemental analysis by micro-EDXRF and SEM–EDS was performed to investigate the use of different alloys and to study the presence of microstructura...

Investigating Early/Middle Bronze Age Copper and Bronze Axes by Micro X-Ray Flu...

Micro X-ray fluorescence (micro-XRF) analysis and neutron imaging techniques, namely 2D radiography and 3D tomography, have been applied for the study of four metal axes from the Early/Middle Bronze Age in Western Iberia, a period characterized by a metallurgical change in the use of copper to bronze. Micro-XRF analysis has shown that one of the axes was produced in copper with some arsenic while the other thre...

Characterisation of a Proto-historic bronze collection by micro-EDXRF

Os machados Bujões/Barcelos e as origens da metalurgia do bronze na fachada atl...

Os artefactos metálicos produzidos durante a Primeira Idade do Bronze (2250‑1250 AC) na Ibéria seguem geralmente modelos e tecnologias conservadoras que, progressivamente, se afastam do utilizado na Europa Ocidental Centro‑Atlântica até que, no Bronze Final, se generaliza a produção de bronzes binários. A introdução dos primeiros bronzes binários parece ocorrer de norte para sul ao longo do Ocidente Ibérico. Pr...

Nota sobre um machado plano em bronze de “Tipo Bujões” de Vila Franca de Xira.

Achados metálicos de cobre no Baixo Vouga (Centro-Norte de Portugal)

O objetivo deste trabalho é o de dar a conhecer dois objetos metálicos, à base de cobre, encontrados em contextos arqueológicos distintos do curso inferior do rio Vouga e desta forma contribuir para o estudo das primeiras produções metalúrgicas na fachada ocidental do Centro-Norte português. O primeiro artefacto, um punhal com chanfraduras na zona de encaixe, foi detetado no sítio da Tapada do Espinheiro, fregu...

"Melting the power" The foundry area of Fraga dos Corvos (Macedo de Cavaleiros,...

Fraga dos Corvos is a Bronze Age habitat site recently studied and located in the north-western versant of Serra de Bornes, Eastern Trás-os-Montes (Macedo de Cavaleiros, Bragança, Portugal). The site visually controls the Macedo de Cavaleiros basin. It is in the main traditional passes into and out of this basin that have been found the deposits of halberd copper blades which gave the name to the so called Carr...

Smelting and recycling evidences from the Late Bronze Age habitat site of Baiõe...

Many aspects of bronze production during Late Bronze Age in Western Europe are so far unknown. In the present study selected artefact fragments and metallurgical debris, which include a slag fragment, from the emblematic Late Bronze Age habitat site of Castro da Senhora da Guia de Baio˜es (Viseu, Portugal) have been studied by optical microscopy, micro-EDXRF, SEM–EDS and XRD. Evidences were found for bronze pro...