ON SOME PHYSICAL CHARACTERISTICS OF CHINESE AND EUROPEAN RED WARES

When in the seventeenth and eighteenth century Chinese red ware from Yixing was imported into Europe, imitations of that ware, some of them delusively similar to the originals, were made in the Netherlands, Saxony, and England. With non-destructive energy dispersive X-ray fluorescence analysis (ED-XFA) the Chinese and different European red wares can be easily separated by comparing the patterns of their calcium oxide, manganese oxide, and lead contents. They also have density characteristics of their own.     

PREHISTORIC ANTIGORITE PROCUREMENT IN CYPRUS

The Canadian Palaipaphos Survey Project in the Paphos district of south-western Cyprus investigated extensive areas of the Esouzas, Xero, and Dhiarizos River valleys, locating hundreds of archaeological sites spanning the nine millennia from the aceramic Neolithic period to the recent era (Rupp et al. s1984 and 1986). Antigorite artefacts were recovered from Neolithic, Chalcolithic and Bronze Age settlements. A number of geological sources have been proposed for the material from which these artefacts were manufactured. The results of neutron activation analyses of archaeological and geological specimens suggest that the Troodos ophiolite/Kouris River secondary deposits were the primary source of antigorite for the prehistoric populations of the study area. Extreme care must be taken when analysing antigorite samples to avoid material with grey-black magnetite-rich inclusions. since these have radically different trace element chemistries from the pure antigorite.     

STEATITE SOURCE CHARACTERIZATION IN EASTERN NORTH AMERICA: NEW RESULTS USING INSTRUMENTAL NEUTRON ACTIVATION ANALYSIS*

Doubts have recently been cast on the ability to characterize steatite sources using rare earth elements (REEs). By increasing the number of samples and elements examined using instrumental neutron activation analysis (INAA) and multivariate statistics, this study shows that, with unhomogenized samples, transition metals, not REEs, make the greatest contribution in characterizing steatite sources in the Middle Atlantic region of eastern North America. Preliminary results suggest that INAA has the potential to assign provenance to steatite artefacts, at least at a regional level.     

PROVENANCE OF THE LIMESTONE USED IN TEOTIHUACAN (MEXICO): A METHODOLOGICAL APPROACH*

This work shows the preliminary results of an international project for the interdisciplinary study of the limestone used in the plasters of the ancient city of Teotihuacan. The limestone provenance was studied using a new approach based on the chemical analysis of the lime lumps that were selected because they represent the composition of the original limestone rock. The results show that the applied methodology was successful and that the limestone used to produce the lime employed to make the floor of the main courtyard at Teopancazco (Teotihuacan), comes from the region near Tula (Hidalgo).     

OLDOWAN RAW MATERIAL PROCUREMENT AND USE: EVIDENCE FROM THE KOOBI FORA FORMATION*

Raw material availability has been shown to be a major factor affecting the material culture of Oldowan tool users. Studies of artefact provenance often focus on site‐specific raw material availability. Here, we use data from primary and secondary sources of raw material to develop a model of basin‐scale stone availability in the eastern Turkana Basin, during the KBS and Okote Members of the Koobi Fora Formation. ED‐XRF was used as a method of characterizing raw material sources and artefacts using trace elements. This model is applied to the site of FxJj 50 to investigate transport and discard patterns.     

PROVENANCE OF ANCIENT TEXTILES—A PILOT STUDY EVALUATING THE STRONTIUM ISOTOPE SYSTEM IN WOOL*

Strontium isotopes are used in archaeology to reconstruct human and animal migration routes. We present results of a pilot study applying strontium isotope analyses to modern sheep hair as a basis for its potential use as a provenance tracer for ancient woollen textiles. Our hydrofluoric acid‐based, lipid soluble analytical protocol, also tested on a number of ancient textile fibres, allows for contamination‐free, low blank strontium isotope analysis of minimal amounts of archaeological material. ⁸⁷Sr/⁸⁶Sr ratios of decontaminated sheep hair agree well with the compositions of biologically available (soluble) strontium fractions from the respective feeding ground soils, a translatable requirement for any potentially successful provenance tracing applied to wool textiles.     

EPR OF Mn2+ IMPURITIES IN CALCITE: A DETAILED STUDY PERTINENT TO MARBLE PROVENANCE DETERMINATION*

We demonstrate that the electron paramagnetic resonance spectrum of Mn²⁺ impurities in calcite, and therefore also in marble, may be accurately reproduced by a traditional spin Hamiltonian formalism. The success of such a treatment, however, very much depends on the spin Hamiltonian parameters having the correct signs as well as magnitudes. We present data that determine the sign of the axial anisotropy parameter and thereby facilitate future quantum mechanical characterizations of marble electron paramagnetic resonance spectra that supplement provenance determination.     

PROVENANCE STUDY OF MARBLE ARTEFACTS FROM THE ROMAN BURIAL AREA OF FASCHENDORF (CARINTHIA,AUSTRIA)*

Numerous marble artefacts were among the extraordinary findings excavated at the Roman burial area of Faschendorf (Carinthia, Austria). The provenance of marble objects, particularly in the Roman provinces, is mostly unclear. Predominantly Mediterranean marbles have been used, but there are also some marble occurrences in the eastern Alpine regions that were exploited in those times. Besides a mineralogical–petrographic analysis, grain‐size evaluation in particular, and the determination of carbon and oxygen isotopes allow an effective characterization of the Faschendorf materials. Their provenance from the Gummern Marble complex in Carinthia is very likely.     

A STUDY ON LATE MEDIEVAL TRANSPARENT‐GLAZED POTTERY AND ARCHAIC MAJOLICA FROM ORVIETO (CENTRAL ITALY)*

Nineteen samples of medieval transparent‐glazed pottery and archaic majolica from Orvieto (central Italy) were studied. They were classified by archaeological criterion as follows: five transparent‐glazed fragments with green and brown decorations (first half of the 13th century), eight green transparent‐glazed fragments (13th century) and six tin‐glazed fragments with green and brown decorations (second half of the 13th century). SEM–EDX, XRD (the Rietveld method) and XRF were used to characterize the chemical and mineralogical compositions both of the bodies and the coatings. In all of the samples, the paste is Ca‐rich with CaO contents as high as 13–20 wt%. The mineralogical composition is compatible with a firing temperature of about 950°C, which is the typical temperature reached in a wood kiln. No difference was observed between the bodies of transparent‐ and tin‐glazed pottery. In the case of transparent glazes, the burial conditions lead to heavy weathering of the samples. However, on the basis of the analyses carried out in non‐weathered areas, the typical composition is PbO 55–65 wt%, SiO₂31–35 wt%. In tin glazes, the tin is scattered on the mass of the glaze as SnO₂crystals with a concentration of 7–14 wt%. Concerning the decorations, it is established that the green colour is due to the presence of copper, while manganese is responsible for the brown colour. These pigments, which represent the typical colours of ‘archaic majolica’, are spread through the glaze homogeneously, apart from one case in which there is clear evidence of manganese oxide crystals.     

THE PROVENANCE AND PRODUCTION TECHNOLOGY OF BRONZE AGE AND IRON AGE POTTERY FROM TELL MISHRIFEH/QATNA (SYRIA)*

This work deals with the archaeometric study of the Bronze Age and Iron Age pottery from Tell Mishrifeh/Qatna (central‐western Syria), where the complete cycle of ceramic production is well documented. Petrographic, chemical and diffractometric analyses were carried out on both potsherds and a clayey material found in a separation basin within the area of the workshops. Petrographic groups were defined and maximum firing temperatures and redox firing conditions were estimated, providing constraints on identifying the production technology and its evolution with time. The studied potsherds turned out to be locally produced, with only a few cases of possible similarities with those described for other localities along the Orontes Valley, and in a couple of cases with evidence of pottery exchange.