THERMOLUMINESCENCE DATING OF POTTERY: AN ASSESSMENT OF THE DOSE-RATE FROM RUBIDIUM

The naturally occurring radioisotope ⁸⁷Rb makes a small contribution to the total dose-rate. Assuming an average potassium:rubidium ratio of 200:1 the contribution is estimated at 2.9% of the B dose-rate From potassium. The effect will be negligible in quartz inclusion dating because of the strong attenuation of the B- emission from ⁸⁷Rb. In fine-grain dating the omission of the ⁸⁷Rb contribution will overestimate the age of a pottery sherd by not more than 2% and this is regarded as of minor importance when the total error in the technique is at least 15%.     

COMPOSITION AND ORIGIN OF IAPYGIAN POTTERY FROM ROCA VECCHIA,ITALY

We have studied 35 samples of fragments of ceramic containers dated between the eleventh and the eighth centuries BC, found at the archaeological site of Roca Vecchia, some 20 km from Lecce along the Adriatic (Salentine) coastline. Analysis of the elemental composition of the finds has been performed by means of atomic emission spectroscopy in plasma and the results obtained have been treated with diverse multivariate statistical techniques. Except for some minor differences, the statistical analysis confirms the grouping structures indicated by typological and stylistic evaluations of the samples, in accordance with the validity of the above methods.     

RADON ESCAPE FROM POTTERY: EFFECT OF WETNESS

Radon and subsequent members of the uranium-238 decay chain are responsible for an appreciable fraction of the radiation dosage received by pottery. Consequently in thermoluminescent dating calculations it is necessary to make an estimate of the degree to which this gas was escaping during burial. Direct measurement of the radon accumulated from pottery fragments indicates that wet conditions do not drastically inhibit the escape of radon, contrary to what has usually been assumed in thermoluminescent dating up till now.     

INSIGHTS FROM THE ANALYSIS OF ANGEL MOUNDS POTTERY TROWELS

Archaeologists have recovered pottery trowels in excavations at numerous historic and pre-Columbian archaeological sites in North America since the late nineteenth century. Despite these facts, pottery trowels have not been the subject of thorough scientific analysis or interpretation. In this study, I define and implement a new method of analysis for pottery trowels, using a sample of 188 pottery trowels from the Mississippian site of Angel Mounds (12VG1). After describing the quantitative and qualitative attributes of pottery trowels, I define categories of frequently occurring pottery trowel bell and handle types. The extensive variability of pottery trowel shapes and sizes discovered at Angel Mounds is then discussed with regard to alternative or multiple uses for the tools and the spatial and temporal distributions of pottery trowel types. As an artifact type that provides opportunities to analyze technology, craft production and specialization, and daily practices in past societies, I argue pottery trowels may hold important future insights into a number of topics of interest to archaeologists.     

LEAD ISOTOPE ANALYSES OF ISLAMIC POTTERY GLAZES FROM FUSTAT,EGYPT*

Lead isotope analyses have been undertaken on a group of Islamic lead‐glazed pottery artefacts from Fustat, Egypt, spanning the period from the eighth to the 14th century ad , that had previously been the subject of a comprehensive typological, chronological, petrographic and technological study. Comparison of the lead isotope ratios for the glazes with those for lead ores from Egypt, Iran, Tunisia, Anatolia, Greece, Sardinia and Spain provided information on the possible sources of the lead used in the production of the glazes. The results show that the lead used in glaze production by the Islamic potters at Fustat was most probably obtained from distant ore sources in Iran or Tunisia, Sardinia, Spain and the Taurus Mountains. Different ore sources were favoured in different periods and, to a limited extent, for different types of pottery, but at no time did the Fustat potters use the potentially more accessible Egyptian ore sources.     

LUMINESCENCE DATING OF POTTERY FROM LATER PREHISTORIC BRITAIN*

Dating of later prehistoric settlements relies heavily on potter; typologies in England and yet there has been little scientific dating in order to verify these typologies. In this work, luminescence dating techniques were applied directly to the pottery which forms the typological framework. Excellent agreement was obtained between the luminescence ages, and archaeological age ranges for known‐age pottery sherds with diagnostic form and surface decoration. A lower correlation, however, was found in several regions between the luminescence ages for undecorated body sherds and the archaeological assessment which was necessarily based solely on fabric, suggesting the need for reassessment of these fabric chronologies.     

CHARACTERIZATION AND THERMOLUMINESCENCE DATING OF PREHISTORIC POTTERY SHERDS FROM MILENA

This paper reports the results obtained applying absolute dating methodologies and mineralogical, petrographical and micropalaeontological characterization techniques to prehistoric pottery sherds varying in age from the Sicilian Middle Neolithic to Bronze Age. All samples came from the archaeological area of Milena (Caltanissetta, Sicily); those of the Bronze Age were found on a site with a precise stratigraphic succession. The investigation has contributed to the determination of an absolute chronology for the Milena prehistoric period. The data provide, for the first time in Sicily, absolute dates covering a wide spectrum of cultures following one another in the same area and, for the Bronze Age site, correlated to the precise stratigraphic succession. The petrographical and mineralogical analyses allowed not only the identification of the principal constituents of the pottery, but also the formulation of some hypotheses regarding the specific manufacturing techniques of different epochs. The microfacies, obtained from the presence of fossils in the groundmass of the pottery, were also analysed and compared with the microfauna present in the Miocene clays outcropping in the area. The data identified local Messinian clay as the raw material probably used in the manufacture of the pottery and also support the presence, already assumed by archaeologists, of imported Mycenaean pottery, thus supporting the dates obtained on pottery taken from the same stratum.     

THERMOLUMINESCENT DATING OF EGYPTIAN PREDYNASTIC POTTERY FROM HEMAMIEH AND QURNA-TARIF

Eight sherds from Hemamieh and two from Qurna-Tarif, both Predynastic settlement sites in the Nile valley, have been dated by the thermoluminescence method (quartz inclusion technique). The results put the Badarian phase at Hemamieh in the sixth and fifth millenium b.c. , and the Gerzean phase in the first half of the fourth millenium b.c. The dates for the village of Qurna-Tarif fall around 4000 b.c.     

X-RAY DIFFRACTION OF EARLY IRON AGE POTTERY FROM WESTERN NORWAY

X-ray diffraction has been used to analyse the surfaces and cores of sherds from pottery from Voss and Etne. two late Roman-early Migration Period sites in western Norway. Results show: (1) the presence of illite and illite/smectite in black-burnished ware from inhumation graves which suggests that this ware was never subjected to temperatures as high as 375°C, (2) the absence of these heat-sensitive clay minerals in red ware from cremation graves at these sites which suggests a secondary firing at 700–800°C, (3) the clay minerals are similar in the cores and surfaces of the black pottery which suggests that the colour differences are due to firing procedures rather than the application of a slip, and (4) chlorite is present in all of the samples which is an indication that the ware originated in a Voss workshop where chlorite is present in other pottery found there and in the local geologic deposits.     

MYCENAEAN POTTERY FROM CILICIA IN OXFORD

Summary. The Ashmolean Museum possesses a small group of Late Mycenaean (Late Helladic IIIC) sherds from Kazanli in Southern Cilicia, which it acquired in 1930. These are of interest since, although similar pottery is known from nearby Tarsus, they appear to be slightly later in date than most of the other pottery from Kazanli recovered by excavation or surface survey. One of them has a pictorial representation of an unusual nature.
The appearance of Mycenaean pottery in Cilicia has often been associated with the arrival of Mycenaean settlers (particularly refugee settlers) around 1200 B.C. However, it is doubtful whether the pottery really justifies this interpretation. Where identifiable, the Cilician Mycenaean seems to display closer links with Cyprus and the East Aegean than with the Greek Mainland; and, when other evidence is taken into account, there seems little reason to suppose that it is necessarily the result of colonisation from Mycenaean Greece.     

A PROVENANCE STUDY OF POTTERY FROM ARCHAEOLOGICAL SITES NEAR CANOSA,PUGLIA (ITALY)*

Studies have been carried out to assess the provenance of selected pottery excavated at archaeological sites near Canosa, Puglia (Italy). Sixty-six sherds, ranging in date from the mid-seventh century BC to the beginning of the third century BC, were analysed by atomic absorption spectroscopy and 16 elements were determined. The analysis data were subjected to multivariate classification procedures. Tests showed that the majority of the examined sherds came from ancient local kilns; a probable Ionian origin was established for some other sherds, while the rest were of unknown origin.     

MYCENAEAN PICTORIAL POTTERY FROM CYPRUS IN OXFORD

Summary. Six fragments of Mycenaean pictorial vases picked up at different sites in Cyprus are described and discussed. Comparison with other such material and chemical analysis of most of the fragments lead to the conclusion that the original vases were made in the north-east Peloponnese. These and other findings suggest the possibility of a pottery export trade during the 14th–earlier 13th century BC (Late Helladic IIIA2–IIIB1), such as is documented for 6th century BC Athens.     

PINE RESINS AND POTTERY SEALING: ANALYSIS OF ABSORBED AND VISIBLE POTTERY RESIDUES FROM CENTRAL NEW YORK STATE*

Analysis was performed on absorbed and visible residues from 21 New York State prehistoric pottery sherds dating from 2905 ± 35 bp (Intcal04) (1256–998 cal bc ) to 425 ± 40 bp (Intcal04) (1417–1626 cal ad ). The use of pine resin was detected in 10 of 12 absorbed residue samples and 11 of 17 sherds subjected to visible residue analysis. It seems likely that the pots were resin‐sealed to make them more impermeable, constituting the first chemical evidence of extensive resin‐sealing in North America. A comparison of the results of absorbed and visible residues from eight of the sherds indicates that the two kinds of residue provide complementary evidence of vessel use.     

THERMOLUMINESCENT DATING OF NEOLITHIC AND CHALCOLITHIC POTTERY FROM SITES IN CENTRAL PORTUGAL

Samples of Neolithic and Chalcolithic pottery from nine sites in the Upper Alentejo and Estremadura regions of Portugal have been dated by the thermoluminescence method (quartz inclusion technique). The project was designed to help establish an absolute chronology for the Neolithic and Chalcolithic periods in this area, and to try to elucidate the chronological relationships between settlement sites and burial sites (‘dolmens’) in the same area. Portugal was confirmed, together with Brittany, as being one of the earliest foci of megalith builders.