ANOMALOUS CARBON-13 VALUES FOR FIBRE TEMPER IN CERAMICS*

Ceramic vessels from Later Stone Age sites in the Seacow river valley, South Africa, were heavily tempered with C4 grasses. However, most δ¹³C values of the temper fall between the known δ¹³C ranges for C4 and C3 grasses. Among possible C3 additives that could skew the signal, ground bone, animal dung, alpine grass, Karoo scrub ash, and humic acid contamination are eliminated. The sherd surfaces yield fatty chars with C3-like values. Although these are not enough to account for all the skewing, they represent only the final cooking event. They were preceded by many such events in which fat was absorbed into the C4 grass then charred to soot by later periods in the fire. Thus organic carbon with the isotope composition of the fat built up while the vessel remained in use.     

ELECTRON SPIN RESONANCE THERMOMETRY APPLIED TO QUARTZITE COBBLES FROM VERGELEGEN SLAVE LODGE,SOMERSET WEST,SOUTH AFRICA

This paper describes the use of electron spin resonance spectroscopy to estimate the degree of heating of quartzite cobbles from hearths on the floor of the archaeological remains of an eighteenth-century Dutch colonial slave lodge. A novel technique based on the comparison of line intensities for the E’and O^-₂ centres in quartz distinguished successfully between cobbles which had been heated to estimated temperatures ranging from 300 °C to 450° C and controls from an adjacent stream bed. This inexpensive and simple technique could be applied to a wide range of archaeological problems involving the thermal history of objects consisting of or containing quartz.     

Behavioural and Taphonomic Patterning at Katanda 9: a Middle Stone Age Site, Kivu Province, Zaire

Katanda 9, an open air Middle Stone Age site, contains a dense vertically compressed accumulation of lithic and faunal remains. The physical state of these materials indicates prolonged surface exposure before burial and the site shares essential characteristics therefore with many Lower and Middle Stone Age and Lower and Middle Palaeolithic occurrences in Africa and Eurasia. An important goal of archaeological research is to determine what, if any, anthropogenic signature can be extracted from distributional data and this article utilizes Katanda 9 to suggest an approach to such spatial analysis. It employs a bottom-up, top-down strategy which works in sequential fashion first to determine and control for taphonomic bias and secondly to fit the resultant pattern to models of hominid behaviour. It proposes that questions be posed in nested hierarchical fashion and that probabilities of correctness be assessed. It concludes that the distribution of materials observed at Katanda is most consistent with a nuclear family pattern.     

THE WRITING'S IN THE WALL: A REVIEW OF NEW PRELIMINARY APPLICATIONS OF ELECTRICAL RESISTIVITY TOMOGRAPHY WITHIN ARCHAEOLOGY

Natural processes are known to cause significant damage to archaeological monuments. In fact, the key to understanding the decay of building materials is the internal movement of water through the mineral matrix, which influences the distribution of chemical, physical and biological deterioration processes. Electrical resistivity tomography (ERT) was traditionally used as a surveying tool within archaeology, but a new high‐resolution technique that accurately traces the movement of moisture in building materials could provide a vital tool for understanding the decay of many archaeological monuments. This paper considers current progress, the shift of ERT from soil to rock research and the impact that this development could have on future conservation, using Hertford College (Oxford) and Neolithic rock art (Golden Gate Reserve, South Africa) as case studies.     

Legislation as an Instrument in South African Heritage Management: Is It Effective?

Abstract

Heritage management and cultural legislation have always existed in the African continent, even before the days of written laws. However, it is often perceived that it was with the 'taking over' of the continent that civilization and heritage legislation were first implemented. The 'new' legislation did not recognize the indigenous means of management and ignored the fact that heritage sites have existed long prior to the scramble for the continent. The first enacted legislation in South Africa was distinctively biased towards the Bushmen heritage. I argue that this was probably because it was not politically problematic as Bushmen were considered to be a dying nation with a culture going 'extinct'. Having legislation that promoted the heritage of the people you were colonizing might not have been strategically correct. Legislation over the years moved away from the 'Bushmen culture' to protecting colonial heritage sites. Whilst the post-colonial heritage legislation has improved on the previous legislation — as can be shown by its success in courts — there are still areas of concern. I find the whole heritage framework represented by the legislation to still be clearly non-African, with a top-down approach that has not much respect for African culture, especially the values that clash with Eurocentric ones. I conclude that indeed there has been significant progress made with legislation over the years, from 1911 to 1999 when the current legislation was promulgated. However, a lack of proactive measures from within heritage management, as well as external factors, are still a stumbling block to a successful implementation of heritage legislation and as a result heritage is still threatened.     

PROCESSING CLAY FOR POTTERY IN NORTHERN CAMEROON: SOCIAL AND TECHNICAL REQUIREMENTS*

For several decades, interpreting technical variations in the physical characteristics of pottery has followed two major trends: the ‘cultural’approach and the ‘behavioural or ‘techno‐functionalist’approach. Using data collected during extensive ethnographic fieldwork, I will consider the relative importance of social and technical requirements in the field of clay processing techniques in the Faro area (northern Cameroon) 1 will show that environmental and techno‐functional constraints cannot explain technical variations, while cultural factors appear determinant. However, faking the discussion one step further, I will show the complexity of the social/cultural mechanism involved in the regional distribution of these techniques.     

NON‐DESTRUCTIVE PORTABLE GAMMA RAY SPECTROMETRY USED IN PROVENANCING ROMAN GRANITOID COLUMNS FROM LEPTIS MAGNA,NORTH AFRICA*

Portable gamma ray spectrometry (PGRS) provides a non destructive means to analyst quantitatively large artefacts, such as building stones, for the radioelements K. U and Th. Nine Raman granitoid columns at the Leptis Magna Ruins in Windsor Great Park, London, were measured in situ by PGRS. Corrections for the environmental background contribution to the gamma ray flux measured, and for the shape and size of the columns, are described Comparison of the PGRS data with a radioelement data base for Roman granite sources indicates that most of the columns originated in the Troad area of Turkey. Two columns could not be unambiguously provenanced using PGRS alone because there is insufficient difference between radioelement concentrations in certain sources. However, non‐destructive measurements of magnetic susceptibility, used in conjunction with PGRS data, suggest that these two columns originated in the Kozak Daǧ, also in Turkey.     

AN INVESTIGATION OF THE PROVENANCE OF THE ROMAN AMPHORA CARGO FROM THE PLEMMIRIO B SHIPWRECK

Eighty-six Roman amphora sherds from the Plemmirio B shipwreck, off Sicily, have been analysed by neutron activation analysis. A large group representative of the amphora cargo, mainly of forms Africana 1 and Africana 2A (from the area of modern Tunisia), was subsequently defined. No differences between Africana 1 and Africana 2A samples were observed, thus implying a similar origin for both forms. The provenance of this cargo group was then investigated by comparison with a Roman amphora kiln data base. After elimination of the more mobile elements it was shown that the cargo amphorae were more likely to have been manufactured at kilns around Sullecthum rather than Leptis Minor. The analytical conclusions are thoroughly consistent with the known archaeological information.     

The Middle Stone Age of West Turkana,Kenya

Abstract

Research on the origins of Homo sapiens and the development of our species’ unique behavior is focused on the Middle Stone Age (MSA) period in Africa (in comparison with the European Upper Palaeolithic). Although archaeological and paleontological fieldwork in the Turkana Basin in northwestern Kenya has contributed greatly to our understanding of human evolution in Africa, the Basin's MSA archaeological record remains poorly known. We report on a reconnaissance of MSA sites in West Turkana, Kenya, which included known archaeological/paleoanthropological localities at Eliye Springs and Kabua Waterhole (Kadokorinyang). A newly-discovered site, Nakechichok 1 (GdJh 5), preserves MSA tools stratified beneath Late Stone Age assemblages. The MSA lithic artifacts from Nakechichok 1 differ from those known from other MSA localities in nearby regions, and, they expand the known scope of MSA variability in the Turkana Basin, demonstrating that the MSA is not “missing” in this region, but just hard to find.     

Four middle Holocene pillar sites in West Turkana,Kenya

Abstract

Megalithic architecture is associated with spread of food production in many parts of the world, but archaeological investigations have focused mainly on megalithic sites among early agrarian societies. Africa offers the opportunity to examine megalithic construction—and related social phenomena—among mobile herders and hunter-gatherers with no access to domestic plants. In northwest Kenya, several megalithic "pillar sites" are known near Lake Turkana, but few have seen systematic research. This paper presents the results of archaeological survey and test excavations at four pillar sites in West Turkana 2007–2009, and describes the sites' spatial arrangements, depositional sequences, and material culture. Radiocarbon dates suggest that pillar sites near Lothagam were used ca. 4300 B.P. (uncalibrated), just as early herding began near Lake Turkana, while pillar sites near Kalokol may be slightly later (ca. 3800 B.P.). Comparisons of material cultural point to possible differences in use of contemporaneous pillar sites, and suggest monumental architecture had multiple forms and purposes in middle Holocene Turkana.