TL DATING OF BURNT LITHICS FROM BLOMBOS CAVE (SOUTH AFRICA): FURTHER EVIDENCE FOR THE ANTIQUITY OF MODERN HUMAN BEHAVIOUR*

This paper presents the first TL dates for burnt quartzites and silcretes from the Still Bay layers of Blombos Cave (South Africa). These layers contained engraved ochres and marine shell beads that could be an early manifestation of symbolic and thus ‘modern’ behaviour by the Middle Stone Age humans. The procedure devised to calculate the ages is presented in detail, particularly with regard to internal microdosimetry, because the problems faced in estimating the dose rates require an approach different from the one usually used on flints and sediments. A mean age of 74 ± 5 ka was obtained for five burnt lithics unearthed in the BBC M1 member of the Still Bay layers. This result is in good agreement with both ESR dates on teeth and OSL dates on sediment, and demonstrates the great antiquity of the archaeological remains discovered at Blombos Cave.     

An improved OSL chronology for the Still Bay layers at Blombos Cave,South Africa: further tests of single-grain dating procedures and a re-evaluation of the timing of the Still Bay industry across southern Africa

This paper presents a series of new single-grain optically stimulated luminescence (OSL) ages for the Still Bay at Blombos Cave, South Africa, and compares them to previously published OSL, thermoluminescence (TL) and electron-spin resonance (ESR) ages for this site. Details are provided about the measurement and analytical procedures, including a discussion of the characteristics of the OSL signals of individual quartz grains. This forms the basis for further investigations into the sensitivity of the equivalent dose (D_e) estimates to a range of different analytical approaches, including changes in the size of the test dose, the choice of signal integration interval, the subtraction of an appropriate background, and isolation of the most light-sensitive (‘fast’) component of quartz OSL. We also report the results of an inter-operator test of D_e determination using seven new samples from Blombos Cave, and demonstrate the reproducibility of results obtained for two samples that had been dated previously at another laboratory and were measured and analysed again in this study. Together, these tests validate the robustness of the Blombos Cave single-grain OSL age estimates to a variety of alternative OSL dating procedures. We have incorporated, for the first time, these ages for Blombos Cave into a data set of all single-grain OSL ages for Still Bay and Howieson's Poort sites across southern Africa, and have used a statistical model to re-evaluate the timing and duration of the Still Bay industry. We calculate the most plausible start and end dates of the Still Bay as 72.2 ka and 71.3 ka, respectively – amounting to a duration of 0.9 ka – and estimate (with conventional 95% confidence) that this industry began no earlier than 75.5 ka, ended no later than 67.8 ka and lasted no longer than 6.6 ka.     

Engraved ochre from a Middle Stone Age context at Klein Kliphuis in the Western Cape of South Africa

This paper reports on a piece of engraved ochre recovered from a Middle Stone Age context at the rock shelter site of Klein Kliphuis (Western Cape, South Africa). The ochre was associated with a mixed assemblage of Howiesons Poort and post-Howiesons Poort MSA artefacts, suggesting that it is substantially younger than similar finds at Blombos Cave. The implications of the find for arguments concerning the nature of Late Pleistocene behavioural evolution are discussed.     

Middle Stone Age bone tools from the Howiesons Poort layers,Sibudu Cave,South Africa

Recently discovered bone implements from Middle Stone Age (MSA) deposits at Sibudu Cave, South Africa, confirm the existence of a bone tool industry for the Howiesons Poort (HP) technocomplex. Previously, an isolated bone point from Klasies River provided inconclusive evidence. This paper describes three bone tools: two points and the end of a polished spatula-shaped piece, from unequivocal HP layers at Sibudu Cave (with ages greater than ∼61 ka). Comparative microscopic and morphometric analysis of the Sibudu specimens together with bone tools from southern African Middle and Later Stone Age (LSA) deposits, an Iron Age occupation, nineteenth century Bushman hunter-gatherer toolkits, and bone tools used experimentally in a variety of tasks, reveals that the Sibudu polished piece has use-wear reminiscent of that on bones experimentally used to work animal hides. A slender point is consistent with a pin or needle-like implement, while a larger point, reminiscent of the single specimen from Peers Cave, parallels large un-poisoned bone arrow points from LSA, Iron Age and historical Bushman sites. Additional support for the Sibudu point having served as an arrow tip comes from backed lithics in the HP compatible with this use, and the recovery of older, larger bone and lithic points from Blombos Cave, interpreted as spear heads. If the bone point from the HP layers at Sibudu Cave is substantiated by future discoveries, this will push back the origin of bow and bone arrow technology by at least 20,000 years, and corroborate arguments in favour of the hypothesis that crucial technological innovations took place during the MSA in Africa.     

The 100,000–77,000-Year Old Middle Stone Age Micromammal Sequence from Blombos Cave,South Africa: Local Climatic Stability or a Tale of Predator Bias?

African Archaeological Review - In this paper, we present a case study of the micromammal sequence from Marine Isotope Stage 5 (130,000–71,000 YBP) at Blombos Cave on the southern Cape coast...     

Shellfish Exploitation Strategies at the Pinnacle Point Shell Midden Complex,South Africa,During the Later Stone Age

Pinnacle Point, Mossel Bay, is best known for the preservation of the earliest evidence for systematic shellfish exploitation by humans during the African Middle Stone Age (MSA). Comparatively little is known about the shellfish gathering strategies of the Later Stone Age (LSA) inhabitants of this region. This article reports on five LSA sites at the Pinnacle Point Shell Midden Complex excavated by the Centre for Heritage and Archaeological Resource Management in 2006 and 2007. These sites represent 2,000 years of hunter-gather and herder settlement and subsistence in the region. Shellfish remains from the five middens were analyzed in order to understand the exploitation patterns of their LSA inhabitants. Information on the relative abundance of different mollusk species in these assemblages and, where possible, the average size of collected specimens, is then compared with published accounts of shellfish material from other sites along the southern Cape coast. These include roughly contemporary assemblages from Noetzie, Hoffman's/Robberg Cave and sites in the Garcia State Forest, and MSA assemblages from Pinnacle Point, Blombos Cave, and Klasies River Mouth. Regional continuities in gathering strategies focused on a range of bivalves and gastropods, and chronological shifts in the exploitation of rocky shores and sandy beaches, and different littoral zones, are apparent.     

Blombos Cave,Southern Cape,South Africa: Preliminary Report on the 1992–1999 Excavations of the Middle Stone Age Levels

The Later- and Middle Stone Age levels at Blombos Cave (BBC) were excavated over four field seasons between 1992 and 1999. Here we report on the results from the Middle Stone Age (MSA) levels. The taphonomy and depositional history of the MSA levels is complex due to faulting, folding and spalling. Careful observations during excavation have assisted in understanding some of these taphonomic and site formation processes; microstratigraphic analysis, currently in progress, will add to this information. The uppermost MSA level, the Still Bay phase, contains high densities of bifacial points, the fossile directeur of the Still Bay Industry. Placing the Still Bay within the MSA culture sequence has been problematic in the past because Still Bay assemblages are rarely found in situ and previous excavations were inadequately recorded. However with the regional data discussed in the text, the Still Bay can be securely placed before the Howiesons Poort dated at 65–70 ka.Flaked stone makes up the greatest proportion of all artefacts with the highest incidence of retouch and use of fine grained, non-local materials found in the Still Bay levels. The ochre assemblage is remarkable for the mass of material compared to other MSA sites. Finds uncommon in an MSA context are two pieces of ochre from the Still Bay phase engraved with a geometric design; a fragment of deliberately engraved bone; also, 28 shaped and polished bone tools recovered mainly from a phase just below the Still Bay. Blombos Cave is the first site where well preserved faunal remains have been recovered in association with the Still Bay allowing for unique insights into human subsistence behaviour and palaeoenvironmental reconstruction. Large fish bones, marine shells, seals and dolphins attest to extensive exploitation of aquatic resources and a wide range of terrestrial animals were hunted and gathered. The few human teeth recovered are heavily worn and damaged thus the issue of morphological modernity cannot be addressed.The BBC findings are a useful adjunct to findings from other MSA coastal sites in the southern Cape, especially Klasies River (KR) and Die Kelders Cave 1 (DK1); uniquely, BBC provides insights into human behaviour during a phase of the MSA never before studied in detail.     

The Still Bay points of Blombos Cave (South Africa)

We present the results of a technological and morphometric analysis of all the Still Bay points (n = 371) recovered from the 1993 to 2004 excavations at Blombos Cave. We have been able to reconstruct the manufacturing sequence of the bifacial points from initial shaping, by direct internal percussion, to finished morphology, by direct marginal percussion. Identifications of impact fractures and manufacturing breaks are based on comparisons with experimental and archaeological bifacial points of verified function, i.e. Paleoindian points from bison kill sites, replicates of Solutrean points mounted as spear-heads or arrowheads and shot into adult cattle, and experimental replication on local raw materials. Our analysis shows that: (a) only a minority of the points are finished forms, and that a large number of pieces are production failures, a situation known at bifacial point production sites of later ages; (b) morphometric and impact scar analyses should take into account this process and distinguish finished points from preforms and unfinished points; (c) there were at least three different kinds of raw material sources and that there is a marked increase in the frequencies of silcrete with respect to the M2 and M3 phases at Blombos; (d) three kinds of evidence prove that some of the points were hafted axially and used as spear tips; (e) production of bifacial points was a primary activity at the site but the hypothesis of intergroup exchange of Still Bay points cannot be sustained on the basis of present evidence; and (f) the Still Bay phase appears to initiate a trend to relatively rapid changes in specialized hunting weaponry and that this innovation is congruent with other innovations such as bone tools, shell beads and engraved ochre of the M1 and M2 phases at Blombos.     

Behavioral ecological models of lithic technological change during the later Middle Stone Age of South Africa

This paper examines changes in the organization of lithic technological systems during the later Middle Stone Age (MSA) of South Africa. Using principal components analysis (PCA), the study looks at the lithic data from two important South African MSA sites: Blombos Cave and Klasies River Mouth. The paper uses PCA to describe the transition to (1) the biface-dominated Still Bay industry at Blombos Cave and (2) the microlithic Howiesons Poort industry at Klasies River Mouth. Based on these analyses, the paper offers a synthetic scenario of the emergence of the Still Bay industry from earlier MSA industries, closely followed by the dramatic transition to the Howiesons Poort. Using a few principles of tool design and behavioral ecological models derived from the study of modern foragers, the paper suggests that the Still Bay came about as the result of deteriorating environmental conditions at the beginning of Oxygen Isotope Stage 4, which caused resources to become scarce and more widely distributed. The study proposes that the bifacial point strategy of the Still Bay was a response to wider mobility patterns and increased movement away from lithic raw material sources. The paper then suggests that Howiesons Poort emerged as information sharing strategies improved, and resources in the environment could be more efficiently targeted with more task-specific tools. The paper closes by reviewing the implications of these findings for modern human origins in South Africa.     

An exclusively hyena-collected bone assemblage in the Late Pleistocene of Sicily: taphonomy and stratigraphic context of the large mammal remains from San Teodoro Cave (North-Eastern Sicily,Italy)

A detailed taphonomic analysis of the large mammal assemblage from 1998 to 2006 excavations at San Teodoro Cave is presented, taking into account the stratigraphic context of the deposits. Three not strictly contemporary fossiliferous levels having different lithological features have been detected, here named B-I, B-II, and B-III. Fossil remains are prevalently accumulated in B-I and B-II. The three levels are characterized by evidence of Crocuta crocuta spelaea occupation, represented by their skeletal remains, coprolites, and distinctive damages on the bones, similar to fossil and modern spotted hyena dens from Europe and Africa. A differential distribution of coprolites and small digested bones, probably due to different humidity conditions, has been recognized in B-I and B-II, and can be related to different topographic locations within the cave or to different climate conditions during the sedimentation phases. The very low density of fossil remains in B-III, which is the oldest level, could indicate an area that was less inhabited by hyenas, probably due to geomorphological conditions. Taphonomic comparison of the three fossiliferous levels of the San Teodoro Cave deposits points to a long-term, perhaps cyclic, occupation of the cave by hyenas and confirms the cave as one of the most important Pleistocene hyena dens in Europe.     

Possible shell beads from the Middle Stone Age layers of Sibudu Cave,South Africa

Recent excavations at Sibudu Cave, KwaZulu-Natal, South Africa, uncovered an Iron Age horizon below which is a complex 3 m thick Middle Stone Age sequence with post-Howiesons Poort, Howiesons Poort, Still Bay and pre-Still Bay layers. Available OSL ages indicate that the Howiesons Poort occupation is older than 60 ky and the Still Bay older than 70 ky. Here we present the archaeological context and the taphonomic analysis of six Afrolittorina africana, three of which bear perforations, from the Still Bay and Howiesons Poort layers of this site. The single specimen from the latter cultural horizon comes from the lowermost layer attributed to this technocomplex. This and the depositional context of this layer suggest that this shell derives, as do the other five, from the Still Bay occupation layers. Taphonomic analysis of the archaeological specimens based on present day Afrolittorina africana biocoenoses, microscopic examination, morphometry, experimental perforation of modern shells, and a review of the natural agents that may accumulate marine shells at inland sites, indicate probable human involvement in the collection, transport, modification, and abandonment of Afrolittorina africana in Sibudu. If confirmed by future discoveries these shells would corroborate the use of personal ornaments, already attested at Blombos Cave, Western Cape Province, by Still Bay populations. The apparent absence of ornaments at Howiesons Poort sites raises the question of the mechanisms that have led to cultural modernity since it seems to contradict the scenario according to which cultural innovations recorded at Middle Stone Age sites reflect a process of continuous accretion and elaboration interpreted as the behavioural corollary of the emergence of anatomically modern humans.     

Assessing the Accidental Versus Deliberate Colour Modification of Shell Beads: a Case Study on Perforated Nassarius kraussianus from Blombos Cave Middle Stone Age levels

Colour plays an eminent role in beadwork. Colour modifications are reported on early shell beads from Middle Stone Age sites. However, identifying the colouring agent and demonstrating the intentional nature of the colouring process is not straightforward. Here, we provide analytical data on colour and structural modifications observed on Nassarius kraussianus (Nk) collected in modern thanatocoenoses and on shells of the same species experimentally heated in oxidizing and reductive atmospheres. Comparison with Nk shell beads from the 72 ka old Middle Stone Age levels of Blombos Cave, South Africa, and contextual analysis of other malacological remains from the same levels that were not used as ornaments identify the mechanisms responsible for the change of colour in modern Nk thanatocoenoses and heated shells, and show that although some Nk shell beads were heated, intentional heat treatment of shell beads is not demonstrated.     

Some Evidence for Seasonality amongst Later Stone Age Hunter-gatherers in Southern Africa

Abstract

The Later Stone Age (LSA) period in Southern Africa is characterised by a succession of cultural traditions. The LSA hunter-gatherer populations were ancestral to the present-day San. They moved around in small bands, within a semi-fixed territory visiting open air and shelter sites to coincide with available resources.

The hunter-gatherers filled every niche in the environment, including the high mountains, deserts and semi-deserts, bush savanna and grass lands. They were well aware of the food sources available in their territories during the course of a year and utilized these opportunities. As winters in southern Africa are relatively mild, and most regions have foods available throughout the year, seasonality is difficult to demonstrate.

In only a few instances there is some evidence for seasonal use or seasonality. Age profiles of seals at Elands Bay Cave suggest short occupation periods during late winter and early spring. In the high mountains of South Africa and Lesotho, where winters are cold and frost and snow common, the faunal and floral remains suggest occupation during late spring, summer and early autumn. Abbot's Cave in the semi-arid central Karoo was used as a hunting lodge during September, relating to the lambing season and migratory behaviour of springbok (Antidorcas marsupialis).     

Wild or domesticated? An ancient DNA approach to canid species identification in South Africa's Western Cape Province

The fragmentary remains typical of archaeological fauna can prove impossible to identify when confronted with closely related sympatric species. In southern Africa domesticated dogs (Canis familiaris) and black-backed jackals (Canis mesomelas) pose just such a problem, rendering difficult an accurate assessment of the timing of arrival of domesticated dogs in the region. Contextual evidence has suggested that canid remains from four Later Stone Age archaeological sites were likely to be domesticated dogs rather than jackals, and were subjected to ancient DNA analyses to determine species. Every tested specimen proved to derive from black-backed jackals. These data provide not only an unexpected window on southern African prehistory, but also highlight the value in applying ancient DNA techniques to archaeological species identification.     

Mid-Holocene age obtained for nested diamond pattern petroglyph in the Billasurgam Cave complex,Kurnool District,southern India

India has one of the world's largest and most significant bodies of rock paintings and engravings, yet not a single rock art site or image has been directly and accurately dated using radiometric techniques. Here we report on results from the Billasurgam Cave complex near Kurnool in southern India. Although this cave complex has been investigated archaeologically since the late 1800s, it was not until 2008 that a large petroglyph, consisting of the remains of three nested diamond designs on a stalactite, was noted. In order to determine if this petroglyph had been made recently, flowstone was sampled from on top of and below the engraving. Radiocarbon dating revealed a mid-Holocene age of about 5000 cal BP for the petroglyph, but we cannot rule out the possibility that the engraving is several centuries younger. Similar nested diamond designs at some rock painting sites and on a chert core elsewhere in India have been assumed to be Mesolithic. Our result is consistent with this hypothesis, although we note that it also consistent with the creation of the petroglyph in the early Neolithic. We conclude that the Billasurgam engraved diamond design was probably made by Mesolithic foragers of the Kurnool region and is the oldest surviving form of rock art yet directly dated in southern India.     

Descent of Iron Age Farmers in Southern Africa During the Last 2000 Years

Ethnographies from southern Africa indicate that patrilineal descent dominates Bantu-language speakers. With great differences in material culture suggesting sociopolitical and economical changes between the earliest farmers that settled in the region in the first millennium AD and those described from ethnographies, it is very likely that descent patterns did not remain static over the course of nearly 2000 years. With major sociopolitical and economical changes, it is not surprising to suggest that other forms of descent also existed amongst farmers of southern Africa in the past. Although it remains ambiguous to establish descent patterns from archaeological remains in the absence of human burials, in this paper I investigate herding practices and the nature of farming as ways to infer descent. The results indicate that at least matrilineal descent was common in southern Africa before the arrival of ancestral Nguni and Sotho-Tswana speakers in the region during the Late Iron Age in the second millennium AD. Other forms of descent were likely present alongside matrilineal descent during the Early and Middle Iron Ages, when widespread evidence for patrilineal descent is absent.     

Pests in an ancient Egyptian harbor

Our investigations combine detailed identification and interpretation of plant remains and associated fauna and their mode of arrival in one of the rock-cut galleries, Cave 3, at the site of Mersa/Wadi Gawasis on Egypt’s Red Sea coast. The site served as a staging area and harbor from which Middle Kingdom pharaohs launched seafaring expeditions to the land of Punt in the early second millennium BC. Quantities of wood, including ship timbers, fastenings, debris related to ship dismantling and reworking, and charcoal were excavated and analyzed. Evidence of marine mollusk infestation (shipworm) was abundant in Cave 3, as were the remains of insect pests of stored foods. We also report on a unique find of a plaster “spill” that preserved the floor of Cave 3 as it was when people worked in the gallery ca. 3800 years ago. The plaster spill created a sealed deposit of plant and insect remains with a diagnostic ceramic fragment, allowing us to securely associate insect remains and “hollow” spikelets of emmer wheat (Triticum dicoccum) recovered from the gallery. An impression of the beetle Trachyderma hispida and its associated exoskeleton fragments provide new evidence of this species as a potential pest not yet reported from an archaeological grain storage site in Egypt. The finding of Tenebroides mauritanicus from the same deposit is the earliest known association of this pest with stored grains. These unique finds shed new light on the risks associated with preserving food supplies, combating pest infestation, and dealing with marine organisms on land and at sea in the pharaonic harbor.     

The Technology of the Early Oakhurst Lithic Techno-Complex from Klipdrift Cave,Southern Cape,South Africa

The analysis of the lithics recovered from the layers dating between cal bp 10,700 and cal bp 13,700 at Klipdrift Cave, southern Cape, South Africa, provides new information on the Oakhurst techno-complex. A comparison with contemporary sites such as Matjes River Rock Shelter indicates not only technological similarities, but also unexpected differences. The Klipdrift Cave Oakhurst shares many characteristics typical of this techno-complex from the southern Cape, for example, in the dominance of quartzite, irregular and unstandardised flakes; the occurrence of irregular cores; and typical large side and end scrapers. It differs from most coastal Oakhurst sites however, in the more intensive exploitation of quartz, and the presence of a blade component, especially in the lowermost layers. Palaeoenvironmental data, derived from stable isotope analysis of ostrich eggshell, suggest that it was dry in this region during this time period. This was partially a result of the colder conditions that prevailed during the Younger Dryas. The lithic technological production techniques are stable at Klipdrift Cave during the period that the site was occupied from cal bp 13,700 to cal bp 10,700. Our data suggest that the lithic technology did not change in response to possible climatic variability.     

Macrobotanical food remains from a trans-Holocene sequence at Daisy Cave (CA-SMI-261), San Miguel Island, California

Carbonized macrobotanical remains from a trans-Holocene archaeological and paleontological sequence at Daisy Cave provide important insights into the use of food plants by Paleocoastal people as well as later groups on California’s Northern Channel Islands. Small seeds are rare among the macrobotanical remains recovered in the cultural strata at Daisy Cave, which are dominated by charcoal from woody plants used as fuel. The recovery of Brodiaea-type corms from the Early and Late Holocene strata suggests, however, that geophytes were an important source of carbohydrates and calories for Channel Islanders throughout the Holocene. The proposed importance of geophytes is consistent with the abundance of Brodiaea in island vegetation communities recovering from more than a century of overgrazing, as well as the large numbers of digging stick weights found in island sites.     

The mobile herding economy of Kebarah Cave,Mt carmel: An economic analysis of the faunal remains

The faunal remains from Kebarah Cave provide evidence of the economic activities of the cave's inhabitants during the late Pleistocene and early Holocene. The variety of grazing resources around the cave is reflected in the proportions of the several species exploited, which changes gradually over time. A comparison of Bos remains indicates that locational factors appear to outweigh any chronological tendency towards size reduction. It is suggested that the same may be the case for animals not usually associated with human exploitation, in particular the hyaena. The data from an excavation conducted 40 years ago are inadequate to answer the questions posed by bioarchaeologists today, but the evidence from better known neighbouring sites has subsequently borne out much of what could be proposed here as hypothesis.