Lithostratigraphy of Border Cave, KwaZulu, South Africa: a Middle Stone Age sequence beginning c. 195,000 b.p.

Border Cave is well-known for its Middle Stone Age (MSA) sequence and associated hominids, as well as for the earliest demonstrable Later Stone Age (LSA) (c. 38,000 b.p.) strata in southern Africa. Detailed lithostratigraphic and sedimentological study permits identification of 8 Pleistocene sedimentary cycles, including 6 major cold phases and 2 intervening weathering horizons. The 2 youngest cold phases are associated with the LSA and have 8 ¹⁴C dates 38,600-13,300 b.p. By gauging sedimentation rates in finer and coarser sediments, duration of sedimentary breaks, and allowing for differential compaction, the excellent radiocarbon framework provided by 28 available ¹⁴C dates can be extrapolated to the 6 cold intervals and 2 palaeosols that are older than 50,000 b.p. These clearly span oxygenisotope stages 4, 5 and 6, placing the base of the MSA deposits at c. 195,000 b.p., Homo sapiens sapiens at c. 90,000–115,000 b.p. and the sophisticated, microlithic “Howieson's Poort” industry at 95,000 b.p. These results require radical reassessment of the age and nature of the MSA complex and of the earliest evolution of anatomically-modern people.     

ESR Dating of the Last Interglacial Mousterian at Karaïn Cave, Southern Turkey

We have obtained ESR ages on 18 teeth from archaeological levels AH16-AH27 exposed at the east profile in compartment E at Karaïn Cave. This sequence exhibits a transition in lithic assemblage from a Classic Charentian to a Karaïn (Zagros-type) Mousterian between levels AH27 and AH25, and two calcite-cemented soils at levels AH22 and AH16 which have been interpreted as climatic warm phases. Since we found no systematic increase in tooth ages with depth, we assigned this sequence a mean early uptake (EU) age of 108 ± 23 ka and mean linear uptake (LU) age of 121 ± 27 ka, on the basis of 37 subsamples from 16 teeth. In this site, the precision of individual tooth ages suffered little from the problems associated with uranium uptake. However, this advantage was offset due to uncertainties arising from the rather inhomogeneous nature of the enclosing strata which contained various sizes of limestone blocks with intervening sediment. This led to difficulties in ascribing a precise annual gamma radiation dose to individual teeth in such a "lumpy" gamma radiation field. Considerable scattering of the individual tooth ages occurred mainly because the annual gamma dose comprised greater than 50% of the total annual dose to the individual teeth. On the basis of the ESR dating results, we infer that deposition of the two different lithic assemblages and both the penultimate and the final climatic warm phases at Karaïn probably occurred during oxygen isotope stage 5. We also conclude that these lithic assemblages are significantly different than contemporaneous Levantine Mousterian industries which occur about 700 km to the southeast.     

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.     

The Middle and Later Stone Age faunal remains from Diepkloof Rock Shelter,Western Cape,South Africa

The faunal sample from the Middle Stone Age (MSA) and overlying Later Stone Age (LSA) deposits of Diepkloof Rock Shelter (Western Cape Province, South Africa) includes at least 40 taxa, mostly mammals, but also tortoises, snakes, birds (especially ostrich represented by eggshell), and intertidal mollusks. The LSA sample contains only species that occurred nearby historically, including domestic sheep, which LSA people introduced to the region by 1800 years ago. In contrast, like other Western Cape MSA faunas, the Diepkloof MSA sample has more species and it is especially notable for five large extralimital grazing species. These imply a greater-than-historic role for grasses in the local vegetation, particularly in the post-Howiesons Poort (latest MSA) interval where the grazers appear most abundant. Extreme fragmentation and dark-staining impedes analysis of the MSA bones, but cut-marks, abundant burning, and numerous associated artifacts suggest that people were the main accumulators. Rare coprolites imply that carnivores could have contributed some bones, and concentrations of small mammal bones, particularly near the bottom of the MSA sequence, suggest a role for raptors. Tortoise bones are common throughout the sequence, and the MSA specimens tend to be especially large, as in other MSA assemblages. The LSA specimens are smaller, probably because LSA human populations were denser and preyed on tortoises more intensively. The most surprising aspect of the Diepkloof assemblage is its marine component. The coast is currently 14 km away and it would have been even more distant during much of the MSA when sea levels were often lower. Intertidal mollusks, particularly black mussels and granite limpets, are concentrated in the LSA and in the Late and Post-Howiesons Poort layers. Only LSA shells are complete enough for measurement, and the limpets are small as at other LSA sites. The implication is again for more intense LSA collection by relatively dense human populations. Both the LSA and MSA deposits also contain bones of shorebirds and Cape fur seals. Whale barnacles and occasional dolphin bones indicate that MSA people scavenged beached cetaceans.     

Trampling vs. Retouch in a Lithic Assemblage: A Case Study from a Middle Stone Age Site,Steenbokfontein 9KR (Limpopo,South Africa)

At the site of Steenbokfontein 9KR, virtually 80% of the lithic blanks presented retouch—an extreme proportion for Middle Stone Age assemblages. The high percentage of putative retouch led us to investigate whether post-depositional processes played a role in the preservation of the lithic assemblage. We designed and performed an experiment that reproduced all the archaeological conditions inferred from the site formation analyses to determine if the archaeological assemblage was trampled or retouched. We defined several qualitative attributes and studied both trampled and retouched experimental samples, and compared them to the archaeological material. We subsequently performed different statistical analyses and a correspondence analysis with all the macro qualitative attributes that we defined. We were then able to discern which attributes were the most eloquent variables and assess the usefulness of a multivariate analysis in discriminating between trampling and retouch.     

The Howiesons Poort and MSA III at Klasies River main site,Cave 1A

We present the results of a technological analysis of the Howiesons Poort and MSA III lithic artifacts from Cave 1A at Klasies River. We studied most of the debitage and retouched pieces from Deacon's excavations (about 3000 pieces) and all the cores and retouched pieces from three layers of Singer and Wymer excavations (640 pieces). Our analysis shows: (1) that HP blade production was based on the use of marginal percussion by soft stone hammer, as at Rose Cottage; (2) that impact scars at Klasies, Rose Cottage and Sibudu indicate that the backed pieces were hafted in two different ways; and (3) that the HP backed pieces were an innovative way of hafting spear tips but are not clear evidence of the invention of bows and arrows.We document the gradual evolution of debitage techniques within the HP sequence with progressive abandonment of the HP technological style. Very similar trends occur in the upper part of the HP sequence at Rose Cottage. The similarity in temporal trends between sites separated by more than 600 km has significant implications for the disappearance of the HP industry. We suggest that the disappearance of the HP was not due to a phenomenon of population contraction and isolation that caused the collapse of social networks. The internal evolution and parallel process of change documented at Klasies and Rose Cottage speak against a collapse of social systems and are associated with evidence of environmental and subsistence changes at the transition MIS 4/3.     

Correlation BetweenC Ages and Aspartic Acid Racemization at the Upper Palaeolithic Site of the Abri Pataud (Dordogne, France)

The Upper Palaeolithic site of the Abri Pataud (Dordogne, France) has been the subject of numerous¹⁴C age determinations which cover the period from 20,400±450 years (OXA-373) to 34,250±675 years (Grn-4507). The racemization ratios of aspartic acid have been determined in 26 fossil bones. The bones are present in two different sedimentary surroundings: levels (fine deposits with numerous artefacts and fossil bones) and “éboulis” (coarse deposits derived from the neighbouring limestone cliff). Racemization ratios for total aspartic acid have a poor correlation with¹⁴C ages (respectivelyr²=0·59 and 0·82 for the two environments) but apparent racemization rates are clearly dependent on the type of deposits (levels: K=4·4×10⁻⁶year⁻¹; éboulis: K=9×10⁻⁶year⁻¹).Racemization ratios of aspartic acid in a high molecular weight protein fraction (>10,000 Da) correlate much better with¹⁴C ages (r²=0·999) for the samples from the levels (k=2·1×10⁻⁵year⁻¹). From this regression line we estimate ages for two Aurignacian levels: level 6≈29,560 years and level 9≈30,440 years .It is noteworthy that none of the regression lines intercepts the origin. Racemization of aspartic acid appears to occur only after a delay of many thousands of years. This phenomenon could be the result of a coupling between the degradation of proteins and the racemization of amino acids.     

Geoarchaeological investigations at the Topper and Big Pine Tree sites,Allendale County,South Carolina

The Topper and Big Pine Tree sites are located along the central Savannah River in South Carolina. Both sites contain significant Clovis horizons and the Topper site is reported to contain a pre-Clovis assemblage characterized by a smashed core and microlithic industry. The stratigraphic position of the early assemblage at Topper is indeed below Clovis and radiocarbon and luminescence ages support its pre-Clovis age. However, the human origin of the proposed artifacts has not been conclusively proven. The late Quaternary stratigraphic sequence developed for this segment of the Savannah River provides support for a regional pattern of river metamorphosis over the last 50,000 years in southeastern U.S. streams.     

The Upper Mississippian Occupation at the Collier Lodge Site (12PR36): Ceramics and Chronology on the Eastern Edge of Oneota

The Upper Mississippian Fisher/Huber occupations of northwestern Indiana are part of the easternmost extension of Oneota. Excavations at the Collier Lodge site (12PR36) found 18 Upper Mississippian features from a seasonal encampment on the edge of the Kankakee Marsh. The ceramic assemblage and radiocarbon dates indicate the site was created during the late fifteenth century, placing it in the northwestern Indiana temporal sequence between the previously known Fifield site occupation and the Huber phase component at the Griesmer site. The ceramic decorative elements include relatively low proportions of medium trailing and cordmarking, with higher proportions of wide trailing and smooth surfaces, suggesting a very late pre-Huber occupation (fine trailing is virtually absent). The assemblage could also reflect a Late Fisher occupation followed after a short period of time by a terminal Fisher/early Huber occupation. Oneota sites in northwestern Indiana appear to have been relatively rare, widely distributed, small, and seasonal.     

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.     

Burned bone in the Howieson’s Poort and post-Howieson’s Poort Middle Stone Age deposits at Sibudu (South Africa): behavioral and taphonomic implications

Despite a growing awareness of the wide range of information that can be provided by detailed analyses of burned bone from archaeological contexts, such analyses are still relatively uncommon. This paper focuses on the behavioral and taphonomic implications of burned bone from the Middle Stone Age (MSA) site of Sibudu Cave (South Africa), reporting on the analysis of a large sample (>377,000 fragments) of bone recovered from the Howieson’s Poort (HP) and post-HP MSA deposits at the site. Faunal remains were initially sorted into burning categories based on changes in color; microscopic analyses focused on the optical properties of the bone matrix (degree of preservation of the bone structure, reflectance and fluorescence) indicated that the color is a valid indicator of thermally altered bone in the Sibudu assemblage. The association of burned bone with hearths, the intensity of burning damage, and the sheer quantity of thermally altered bone suggests that the bone was not burned primarily as a result of natural fires. We propose that the high incidence of burned bone primarily reflects two types of site maintenance activities: first, the discarding of bone into fire as a means of disposing of food waste (as also argued by Cain [2005, Using burned animal bone to look at Middle Stone Age occupation and behavior. J. Archaeol. Sci. 32, 873–884], for a smaller sample of material from the post-HP and late MSA deposits at the site), and second, the incidental burning of bone on/near the surface during the periodic burning of plant-based bedding. In considering the taphonomic implications of the burned bone, we demonstrate that calcined bone is in fact more heavily fragmented than unburnt or moderately burned bone. Furthermore, cortical preservation was negatively correlated with the intensity of burning damage, which has implications for the study of surface modifications. These results indicate the importance of conducting thorough taphonomic analyses prior to making comparisons between units that show differing degrees or intensities of burning damage.     

Identifying regional variability in Middle Stone Age bone technology: The case of Sibudu Cave

A few pieces of worked bone were previously reported from Sibudu, a site from KwaZulu-Natal in South Africa featuring a stratigraphic sequence with pre-Still Bay, Still Bay, Howiesons Poort, post-Howiesons Poort, late and final MSA cultural horizons. Here we describe an expanded collection of worked bones, including twenty-three pieces. Technological and use-wear analysis of these objects, and their comparison with experimental and ethnographic data, reveals that a number of specialised bone tool types (wedges, pièces esquillées, pressure flakers, smoothers, sequentially notched pieces), previously known only from the Upper Palaeolithic and more recent periods, were manufactured and used at least 30,000 years earlier at Sibudu Cave. These tools appear to be part of a local tradition because they are absent at contemporaneous or more recent southern African sites. Variability in Middle Stone Age material culture supports a scenario in which, beyond broad similarities in lithic technology, significant differences between regions, and trends of continuity at a local scale emerge in other aspects of the technical system, and in the symbolic domain. The archaeological record is revealing a complexity that prevents evaluation of the modern character of Middle Stone Age cultures in antinomic terms. We argue here that it is the detailed analysis of cultural variation that will inform us of the non-linear processes at work during this period, and contribute in the long run to explaining how and when crucial cultural innovations became established in human history.     

Intensifying collection and size increase of the tessellated nerite snail (Nerita tessellata) at the Coconut Walk site,Nevis, northern Lesser Antilles,AD 890–1440

Recent archaeological investigation at the Coconut Walk site on the Caribbean island of Nevis revealed dense 40 cm deep midden deposits that accumulated between cal AD 890–1440. Analysis of invertebrate faunal remains reveals an assemblage dominated by nerite snails. We measured the length and width of more than 2700 tessellated nerite (Nerita tessellata) shells to investigate evidence for changing mean size that might be indicative of intensifying human predation pressure or other cultural and natural processes. Contrary to similar archaeomalacological studies in which size decline is detected, we observed a statistically significant size increase for N. tessellata over time. This size increase is coupled with increasing levels of tessellated nerite exploitation at the Coconut Walk site. Results suggest that tessellated nerite use was sustainable over several centuries of site occupation. Our findings have important implications for investigations of anthropogenic impacts on prehistoric mollusc populations. In addition, the findings reported here provide important insight into human subsistence patterns during the Late Ceramic Age in the Caribbean and a framework for comparison with observations from other Pre-Columbian sites in the Caribbean.     

Flake selection and scraper retouch probability: an alternative model for explaining Middle Paleolithic assemblage retouch variability

It has been proposed that the relative abundance of retouched objects in Paleolithic assemblages can serve as a measure for artifact transport and by extension a proxy for site occupation duration. This approach is based on the assumption that retouch represents curatory effort for extending the service time of transported artifacts when raw material access is uncertain or limited, a condition that could arise when groups move frequently over long distances across the landscape. This paper proposes an alternative model that explains retouch as a probabilistic outcome of an expedient, on-site flake selection process. A simulation illustrates that the model is capable of producing assemblage retouch configurations akin to those commonly observed in Paleolithic settings. The simulation also indicates that the threshold applied by past individuals for selecting particular artifacts is an important parameter for explaining assemblage retouch variability. Using artifact weight as a proxy for flake selection criteria, several Middle Paleolithic assemblages exhibit patterns that support predictions made from the model simulation. Findings suggest that variation in scraper frequency among the studied assemblages can be accounted for by an interaction between the abundance of artifact production events and shifting artifact selection criteria, without appealing to higher-level behaviors of technological and mobility strategies.     

First excavation of intact Middle Stone Age layers at Ysterfontein,Western Cape Province,South Africa: implications for Middle Stone Age ecology

Excavations into a coastal cliff at Ysterfontein (YFT) 1, South Africa, have revealed 2.5–3 m of stratified sands containing classic Middle Stone Age (MSA) stone artifacts, abundant mussel and limpet shells, numerous fragments of ostrich eggshell, and somewhat rarer bones from mammals, birds, tortoises, and snakes. The sands apparently filled a crevice-like, calcrete shelter, where the artifacts and animal remains accumulated partly in place and perhaps partly through slippage down the face of a dune that once stood between the site and the sea. Accelerator radiocarbon dating of ostrich eggshell places the sequence before 33,400 years ago. Artifact typology provisionally suggests that it formed after 70,000 years ago. The fauna resembles faunas from the handful of other known coastal MSA sites and contrasts with faunas from regional Later Stone Age (LSA) sites in its low diversity of coastal marine species and in the large size of its limpets and tortoises. The difference suggests that MSA people exploited local resources less intensively, probably because their populations were less dense.     

A late Middle Stone Age artifact assemblage from Sibudu (KwaZulu-Natal): comparisons with the European Middle Paleolithic

It has been suggested that many behavioral innovations, said to appear during the late Middle Stone Age in sub-Saharan Africa, facilitated the expansion of anatomically modern humans from Africa and the Near East into Europe at about 50 kyr; the process eventually led to the replacement of Neanderthals by modern humans and the emergence of the Upper Paleolithic. However, assemblages in this time range are little known in South Africa. In fact, the transition from Middle to the Later Stone Age in Southern Africa is controversial. The early appearance in South Africa of many innovations, such as sophisticated knapping techniques (e.g. the use of soft hammer or indirect percussion in blade production, of composite tools, of microlithic and bladelet technologies) remains to be established through technological analysis.We present here the first results of a project designed to carry out detailed technological studies of several lithic assemblages in South Africa and France dated to the transition period. At this time we have completed the study of a post-Howiesons Poort assemblage from the rock shelter site of Sibudu.The >2 m deep stratigraphic sequence of Sibudu extends from Howiesons Poort at its base to final Middle Stone Age, directly under Iron Age layers. We have analyzed in detail layer RSP (ca. 53 kyr, 1 m above the Howiesons Poort levels) which has provided a large assemblage of several thousand stone artifacts. Compared to published MSA assemblages this industry is unusual for the very high proportions of retouched pieces (15%). The technology is not very elaborate and there is no strong standardization of the end-products. There are no flakes of predetermined shapes; retouch is used to modify irregular flakes to obtain desired edges. Knapping of flakes and blades is done by hard hammer; soft hammer is used only for retouching tools. Interestingly the older Howiesons Poort blades were produced on the same raw materials by soft hammer. Raw material (hornfels and dolerite) was procured from distances of less than 20 km. Unifacial points are the dominant type and there is strong evidence of hafting and use as spear armatures. Detailed comparisons with Middle Paleolithic assemblages of Western Europe show that the late Middle Stone Age technology in South Africa is very similar to that of the Middle Paleolithic; in fact we see no fundamental differences between the two entities, as far as lithic technology is concerned. Implications for the Out of Africa hypothesis are discussed.     

Clovis Blades at Paleo Crossing (33ME274), Ohio

Abstract

This paper describes the previously undocumented Paleoindian lithic blade assemblage from the Paleo Crossing Site, Ohio (33ME274). Qualitative and quantitative comparisons of the Paleo Crossing blade assemblage to blade assemblages from other Paleoindian sites demonstrates its fragmented and utterly exhausted nature, but support its designation as Clovis. This is significant given that a majority of the Paleo Crossing toolstone outcrops 600 km southwest of the site in southern Indiana and western Kentucky, a prominent locale for Clovis prismatic blade manufacture. We propose that blade reduction was practiced for prolonging the use-life of distally retouched endscrapers, a prominent tool form at Paleo Crossing. Since use-wear and ethnographic evidence often show that endscrapers were used for hide-working, Paleo Crossing may be an appropriate venue to test for the presence of intense caribou hide-working.     

The PalaeoEnvironments and ARchaeological Landscapes (PEARL) project: Recent findings from Neolithic sites in Northern Oman

The PalaeoEnvironments and ARchaeological Landscapes (PEARL) research project is a joint German–British project with the principal objective of developing a framework of past human occupation and landscape change in south-eastern Arabia. Fieldwork during 2018 and 2019 involved the systematic survey and excavation of sites in the Rustaq and Ibri regions of Northern Oman, with the aim of establishing the nature and timing of human occupation and landscape change during the Early Holocene period (c. 10,000–7,000 years BP). Further to the findings previously reported, results from recent excavations of the site Hayy al-Sarh in Rustaq revealed the presence of animal remains, stone and shell beads and stone structures, indicating a large Neolithic settlement with burial areas. In addition, preliminary excavations at a rock shelter site near Ibri have revealed stratified archaeological remains, including a Fasad-type assemblage. Future fieldwork will further develop archaeological and palaeoenvironmental records to help build a framework for studying cultural and natural developments in Northern Oman.