Archaeometric Approach Research Articles

Technological Choices in Hand‐Made Indigenous Pottery from Western Mallorca (Balearic Islands, Spain) (C.1200–75 bc): An Archaeometric Approach

This paper addresses the technological choices observed in Mallorca (Spain) for the production of hand‐made pottery during the Late Bronze and Iron Age. We have conducted a diachronic analysis of the ceramic assemblages recovered from two archaeological sites placed in the same territory by means of X‐ray fluorescence and optical microscopy by thin‐section analysis. The archaeometric characterization of the hand‐made vessels allows us to establish several compositional groups related to the use of different raw materials and certain paste recipes associated with the archaeological sites and periods considered. Thus, this study evidences different productive strategies in each site and across time in the same geographical area.

Reconstructing Regional Trajectories: the Provenance and Distribution of Archaic to Hellenistic Ceramics in CentralPisidia(South-west Turkey)

Analytical ceramic studies offer the opportunity to determine cultural development and change on the basis of origin and use of raw materials. In this particular study, an archaeometric approach on ceramics in central Pisidia contributes to the discussion of contact and exchange between indigenous communities and several cultural spheres of influence on a long-term timescale (eighth to second centuries bce). Morphological data as well as mineralogical (optical microscopy; n = 273) and chemical composition (by ICP-OES/MS; n = 122) of ceramics and raw materials show distinct resource zones for the production and distribution of ceramics in this connecting region of Anatolia. The use of trace element profiles (REE, HFSE, LILE and TTE) in particular is regarded as instrumental in detailing high-resolution provenancing of ceramics. The ceramic provenance indicates different patterns of material interactions during the Archaic, Classical and Hellenistic periods. A significant increase in regional interaction occurs coinciding with the development of pottery activities at Sagalassos.

An archaeometric approach to gain knowledge on technology and provenance of Apulian red-figured pottery from Taranto

A large sampling of Apulian red-figured pottery fragments (fifth to fourth century BC) coming from Taranto (Italy) was analyzed by a multi-technique approach. The ceramic bodies’ elemental composition has been obtained by inductively coupled plasma mass spectrometry (ICP-MS), the mineralogical composition of pastes by polarized-light optical and electron microscopies (OM and SEM-EDS), and X-ray powder diffraction (PXRD). The results obtained from the statistical treatment of compositional data, combined with those driven from mineralogical composition of pastes, allow to formulate hypotheses about the provenance of the objects and the manufacturing tradition of the workshops, starting to make it possible to understand the relationships among ceramic technology, artistic expression, and workshop practice in the samples analyzed.

The origins of mural painting in Ancient Peru: archaeometric preliminary study of the Ventarrón mural paintings, Valle de Lambayeque

Since 2007, the research led on the Huaca Ventarron site has allowed investigators to discover outstanding wall paintings. These murals are one of the oldest examples of this artistic expression in the Andean area and American continent (4000 BP). Analyses have given indications on the materials and techniques used by the first painters, ancestors of a long pictorial tradition. Thanks to an archaeometric approach, combining observations and analysis (Optical Microscopy (OM), Scanning Electron Microscopy and Energy-dispersive X-ray Spectroscopy (SEM–EDS), X-ray Fluorescence (XRF) and Fourier Transform Infrared Spectroscopy (FTIR)), it was possible to characterize the colorant materials used in the two constructive sampled phases. These materials are mineral pigments, iron oxides, clays and natural earth, mixed in order to create a wide chromatic scale. Through this research we were able to obtain the first analytical data concerning such ancient mural paintings. It was very useful to comprehend the emergence of this artistic expression in Peru. These results open new research perspectives as well about the origins of Prehispanic pictorial technology as about conservation of wall-paintings in earthen architecture.

Archaeometric approach for the study of mortars from the underwater archaeological site of Baia (Naples) Italy: Preliminary results

This work was aimed to evaluate the features of mortar samples taken from the underwater archaeological area of Baia, (Naples, Italy), an important site, where the remains of the ancient Roman city of Baiae and Portus Iulius are submerged after bradyseism events, started from IV th century A.D. Several architectural structures are still preserved into the submerged environment, such as: luxurious maritime villas, imperial buildings, private houses, thermae, tabernae and warehouses. In particular, some samples were collected from the masonry walls belonging to a building of the underwater area called Villa a Protiro. A first archaeometric approach has been applied to analyse twelve archaeological mortars samples in order to define: textural features, chemical composition and raw materials used for their production. For this purpose different analytical methods were used, such as, polarizing optical microscope (POM) and scanning electron microscopy (SEM-EDS).

Scanning Electron Microscopic Characterization of Iron-Gall Inks from Different Tannin Sources – Applications for Cultural Heritage

Scanning electron microscopy was used to study the reactivity of iron-gall inks with varying iron concentrations. Vegetable extracts with hydrolysable tannins produced stable ink, while the presence of crystal aggregates explained the low reactivity of condensed tannins. This novel archaeometric approach has proved useful in chemical corrosion studies of ancient documents.

Il complesso episcopale di Milano: dall’insediamento romano al duomo visconteo. Una problematica sintesi diacronica

The project “Piazza Duomo before the Duomo” has involved the archaeological site of the Episcopal Complex in Milan, located under the churchyard of the Cathedral. The systematic review of archaeological and historical documentation, the stratigraphic surveys and the archaeometric approach allowed an overview of the problems linked to the topography and architectural evolution of the main buildings. This preliminary report shows: at the first time the recent and ancient excavations in this area and the methods to interpret and integrate the documentation of old excavations; at the second time the synthetic evolution of the buildings in this area before the construction of the 14th C. cathedral. A Roman residential neighbourhood with a public building were occupied by Christian buildings from the east to the west during the 4th and 5th c. The date of some buildings (above all St. Tecla) is revised with new arguments that will be presented in detail in the scientific edition of the episcopal complex, now in preparation.

Ceramic Ethnoarchaeometry in Western Sardinia: Production of Cooking Ware at Pabillonis

Ceramic ethnoarchaeology has been used to explore fully the chaîne opératoire and to understand all of the stages and factors involved in pottery production, such as raw material selection or paste recipes used by the potters. This work presents the results of the application of compositional analysis undertaken in the village of Pabillonis (western Sardinia, Italy), the main cooking ware production centre of the island. Pottery and local clays have been characterized using a combination of analytical techniques. By integrating the ethnographic information and the archaeometric approach, it was possible to reconstruct the operational sequence, exploring the relationship between the processing of raw materials and the functionality of the final products, and the intra‐production compositional variability.

An Archaeometric and Archaeological Approach to Hellenistic-Early Roman Ceramic Workshops in Greece: Contribution to Dating

The present article comprises a multidisciplinary archaeometric approach for the study of Hellenistic and Early Roman kilns in Greece. A collection of previously published and new archaeomagnetic data are combined with new results from mineralogical analytical experiments. The sampled material came from four areas, covering different geological contexts: Katerini, Olympiada, and Polymylos in mainland Greece, and the island of Paros. Extensive rock-magnetic experiments, including identification of the dominant ferromagnetic minerals present, their domain state, and mineralogical alterations during laboratory treatments, have been carried out in order to examine the magnetic properties of the studied materials and prove their suitability for reliable archaeomagnetic determinations. Magnetic cleaning provided well-defined archaeomagnetic directions, and archaeointensity measurements were carried out using both the Thellier-Thellier and Triaxe protocols. Information from both magnetic and mineralogical properties referring to firing conditions is further discussed along with archaeological information. Finally, a new dating of the four sites together with other structures of similar age was carried out using the Pavón-Carrasco model.

An Archaeometric and Archaeological Approach to Hellenistic-Early Roman Ceramic Workshops in Greece: Contribution to Dating

The present article comprises a multidisciplinary archaeometric approach for the study of Hellenistic and Early Roman kilns in Greece. A collection of previously published and new archaeomagnetic data are combined with new results from mineralogical analytical experiments. The sampled material came from four areas, covering different geological contexts: Katerini, Olympiada, and Polymylos in mainland Greece, and the island of Paros. Extensive rock-magnetic experiments, including identification of the dominant ferromagnetic minerals present, their domain state, and mineralogical alterations during laboratory treatments, have been carried out in order to examine the magnetic properties of the studied materials and prove their suitability for reliable archaeomagnetic determinations. Magnetic cleaning provided well-defined archaeomagnetic directions, and archaeointensity measurements were carried out using both the Thellier-Thellier and Triaxe protocols. Information from both magnetic and mineralogical properties referring to firing conditions is further discussed along with archaeological information. Finally, a new dating of the four sites together with other structures of similar age was carried out using the Pavón-Carrasco model.

Iron-Age bronze statuettes in Southern Portugal: combining archaeological data with EDXRF and BSEM + EDS to assess provenance and production technology

A simple, fast, and nondestructive analytical methodology combining X-ray Fluorescence (EDXRF) and Back-scattered Electron Microscopy coupled with Energy Dispersive Spectroscopy (BSEM+EDS) has been applied to characterize the alloy’s composition of ex-votos metal statuettes of unknown provenance and age stored in the Museum of Evora in Southern Portugal, and to compare it with Iron-Age artefacts of similar typology recovered from the well-known Phoenician settlement (7th century BC) of Alcacer do Sal located about 50 km W of Evora. The aim of the study was two-fold: (a) to confirm the age and provenance of the bronzes from the Alcacer settlement; (b) to assess whether the combined archaeometric approach could shed light on the interaction between local (Iberian peninsula) and allochtonous (Phoenician) technological know-how and on how the “Orientalizing” Phoenician influence had been modulated locally in the making of metal artifacts. In this respect, for comparative purposes, selected bronze statuettes displaying “Orientalizing” features of inferred Phoenician origin from the Nuragic collection of the National Archaeological Museum in Cagliari and the G.A. Sanna Museum of Sassari, Sardinia, were also analyzed by EDXRF. Results indicate that all statuettes are made of an alloy of Cu/Sn or Cu/Sn/Pb with variable Sn and Pb content. The presence and content of Pb and of Fe (the latter always >0.05 %) in the alloy suggest a production technology involving the smelting of ferrous minerals and/or the use of reducing firing conditions with locally available Pb intentionally added as fluxing agent. The alloy’s compositional data is consistent with a provenance of the Evora statuettes from the known Phoenician settlement of Alcacer do Sal in Southern Portugal.

Metalworkers and Smelting Precincts: Technological Reconstructions of Second Millennium Copper Production Around Phalaborwa, Northern Lowveld of South Africa

This thesis examines metal production debris with the aim of reconstructing extractive metal technologies employed around Phalaborwa during the second millennium AD. Mining and metallurgy were previously identified as exclusive pulling factors for Iron Age human settlement in this agropastoral marginal area. Several Iron Age settlements with extensive metal production evidence were previously documented. This thesis places emphasis on extractive copper metallurgy previously neglected for several reasons. The early second millennium AD site of Shankare is used as the main case study. Whilst previously excavated metallurgical assemblages from late second millennium AD sites are re-investigated to explore diachronic changes in smelting technologies. The thesis is inspired by contemporary theoretical developments by the Francophone school of thought known as the ‘Anthropology of Technology’. Standard archaeological fieldwork procedures together with post-fieldwork laboratory studies were employed. Separation of copper from iron production debris visually was impossible but a combination of field observations and archaeometric approaches offered the answer. Archaeological ores, slags, technical ceramics and metal artefacts were subjected to optical microscopy, energy dispersive x-ray fluorescence spectrometry (XRF), scanning electron microscopy energy dispersive spectrometry (SEM-EDS). Copper smelting slags differ significantly from iron smelting slags in their chemistry and microstructure. There are subtle differences in copper slags from different archaeological sites. Earlier copper slags are heterogeneous with notable unreacted minerals fragments. Despite these differences both copper and iron slags are linked to the same ore deposit known as the Palabora Igneous Complex. The metallurgical chaines operatoires employed in the research area are reconstructed. At Shankare copper production is represented by crushed furnace slags and secondary refining ceramic crucibles. Iron slags are confined to dedicated metallurgical middens whereas copper production debris is present at low density scatters and domestic middens. This spatial configuration confirms recent observations by other archaeologists in Southern Africa. The archaeological and analytical results permit preliminary discussions of sociotechnical systems of Iron Age metal producers in the Northern Lowveld.

Pre-Columbian treponemal infection in Denmark?- a paleopathological and archaeometric approach

The aim of this paper is to investigate five new cases of possible treponematosis in early medieval Denmark. A total of 1018 skeletons from Danish and present day German cemeteries have been examined, and five candidates of pre-Columbian individuals have been selected from three Danish burial sites on Funen, Jutland and Zealand. The five individuals with a possible infection with treponematoses have been analysed anthropological and chemically.Two of the skeletons exhibited cranial lesions, i.e. serpiginous and focal superficial cavitation. The other three only displayed periosteal reactions of varying degrees on the postcranial skeleton. Computed tomography scans showed focal obliteration of the periosteum on the long bones as well as on the affected skulls. Radiocarbon dates and stable isotope analyses indicate that three of the four analysed skeletons predate AD 1493. High levels of mercury in three of the individuals suggest that medical treatment with Hg-containing medicine took place.Considering the climate and geography at the sites, venereal syphilis might be the treponemal disease causing the pathologies on the skeletal remains. However, the historical background, the bone lesions and their prevalence point to the presence of a less aggressive, maybe non-venereal, form of treponematosis. Consequently, the hypothesis that pre-Columbian venereal syphilis existed among the analysed skeletal material is rejected with the help of various archaeometric analyses.

Procedencia de las puntas de jabalina del “Dolmen de la Pastora” (Valencina de la Concepción, Sevilla)

In this article, along with an updated bibliographical revision, a new archaeometric approach to La Pastora

BLACK AND RED GRANITES IN THE EGYPTIAN ANTIQUITY MUSEUM OF TURIN: A MINERO‐PETROGRAPHIC AND PROVENANCE STUDY

A recent project to investigate the stone artefacts preserved in the Egyptian Antiquity Museum of Turin has been undertaken, with the aim of supplying their systematic classification and suggesting the provenance site of the original raw materials. This paper focuses on seven sculptures dating back to the New Kingdom (18th–19th Dynasties): the statue of Ramses II, three of the 21 sculptures of the goddess Sekhmet, the statue of the goddess Hathor, the Ram‐headed Sphinx and the sarcophagus lid of Nefertari. Petrographic observations have shown that all the sculptures are made of granitoid rocks, with variable composition from granite to granodiorite and tonalite. The observation of strong macroscopic analogies with the so‐called black and red granites outcropping in the Aswan area has suggested a common origin of all the raw materials used for their manufacture. In order to verify this provenance hypothesis, several samples were collected in the Aswan quarry districts. According to results of a minero‐petrographic and geochemical comparison between the statues and the Aswan quarry samples, it was possible to identify the source area of the stone sculptures and finally to highlight the importance of an archaeometric approach to the solution of archaeological problems.

An archaeometric approach about the study of medieval glass from Siponto (Foggia, Italy)

Medieval glasses, including feet and rims of chalices, fragments of lamps and globular bottles, coming from the archaeological site of Siponto (Foggia, Italy), were analyzed by Inductively Coupled Plasma Emission Spectroscopy and Graphite Furnace Atomic Absorption Spectroscopy for investigating and defining glass production technology in Apulia (Italy) in the Middle Ages, because of the poor understanding currently achieved on either compositional and technological features of medieval glass items. The examined finds, whether colourless or coloured blue, yellow-green, yellow, pink and red, revealed a typical silica–soda–lime-composition. The chemical analysis and the statistical treatment of data allowed to trace former, flux, modifier and, where it is present, the element responsible for colour, clarifying production technology issues. It has been possible to identify, moreover, objects obtained by recycling of cullets or finished items. Finally, this work evaluates the effectiveness of the statistical multivariate treatment by Principal Component Analysis (PCA), Clustering Analysis (CA) and Factor Analysis (FA) on compositional data to obtain technological information in opposition to the conventional binary oxides diagram, which represent the most common, widely assessed, archaeometrical practice to obtain technological information from compositional data.

A micro-Raman archaeometric approach to Roman wall paintings

Infrared and Raman spectra have been recorded on the surface of plasters from Regium Lepidi (Reggio Emilia, Italy). A palette has been identified, that can be compared with the ones from the nearby towns of the Roman Empire, but some peculiarities can be outlined. Some of the pigments could come from the territory, even though the techniques could be ascribed to those usually present in the 1st century a. c.

Technical Study of Pigments and Paintings in Archaeological Ceramics from Northwestern Argentine Region: An Archaeometric Approach and Implications for Their Conservation Through SEM-EDS.

ABSTRACTThe ancient technology involved in the application of pigments and paintings used by potters to decorate ceramic vessels is one of the most interesting aspects of ceramic technology in the past. Potters have used in the past several sources (e.g. inorganic and organic) to decorate the vessels in order to achieve the colours desired and fix them in the vessels throughout the firing process. In this paper, we present the results of a technological and chemical characterisation of pigments and paintings through the application of Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS) to ceramics from the Middle Period (ca. 650 AD – 900 AD) at Northwestern Argentine region.

Technology Transfer at the Periphery of the Mycenaean World: The Cases of Mycenaean Pottery Found in Central Macedonia (Greece) and the Plain of Sybaris (Italy)*

The study of technology transfer in pottery production to the periphery of the Mycenaean world has been addressed by considering two different areas, southern Italy and central Macedonia. Technological features such as ceramic paste, decoration and firing have been determined for different ceramic groups established according to provenance criteria. The studies of technology and provenance have been performed following an archaeometric approach, using neutron activation analysis, petrographic analysis, X‐ray diffraction and scanning electron microscopy. The results have revealed the existence of two different models. On the one hand, southern Italy seems to exhibit a more organized pottery production, which follows a Mycenaean‐like technology, while in central Macedonia production is probably more varied, being based in part on the technology of the local tradition.

State of preservation of polymorphic plasma proteins recovered from ancient human bones

Protected by the mineral matrix, bone proteins are capable of surviving inhumation periods of several hundreds or thousands of years in soil. While the preservation of the bone matrix protein, collagen I, is the prerequisite for a variety of archaeometric approaches, such as radiocarbon dating and the reconstruction of palaeodiet by stable isotope analysis, little is known about both the rate and state of preservation of non-collagenous proteins. We succeeded in the isolation, electrophoretic separation (SDS-PAGE, IEF) and immunological detection (radial immunodiffusion, IEF immunoblotting and ELISA) of plasma proteins preserved in archaeological human bones. However, sample preparation and electrophoretic methods had to be adapted to the specific demands of these aged proteins, since they are not only degraded and fragmented but also cross-linked to other organic components, either indigenous to the bone or to contaminants from the burial environment. Complex decomposition phenomena are responsible for the altered mode of migration of aged proteins through a gel. After isoelectric focusing, the ancient proteins mainly concentrate below pH 4.45 in the pH-gradient. Thus, highly negatively charged protein components have a better chance of preservation in bone after death. Isoelectric focusing with subsequent immunoblotting of ancient protein samples revealed protein patterns which showed marked charge-modifications in comparison with those of modern human plasma proteins due to protein degradation (e.g. α2-HS-glycoprotein and α1-antitrypsin). Nevertheless, in combination with different immunological analyses, previous results concerning the selective enrichment of α2-HS-glycoprotein in bone compared with other plasma glycoproteins could be confirmed. Copyright © 1999 John Wiley & Sons, Ltd.