Abstract
Melikane, a large sandstone rockshelter in the Maloti-Drakensberg Mountains of highland Lesotho, preserves an 80,000-year-old archaeological sequence including an occupation pulse dated to the onset of the Last Glacial Maximum (LGM), ~27–23 kcal BP. Paleoenvironmental proxies indicate that temperature depressions of ~6 °C below present values provoked changes in vegetation distribution around the site. The onset of the LGM also coincides with a global shift towards microlithization, expressed in southern Africa as the Later Stone Age Robberg bladelet industry. Bousman and Brink’s (Quaternary International 495:116–135, 2018) rapid replacement hypothesis asserts that this technocomplex was adopted nearly simultaneously across the subcontinent ~24 ka cal BP, replacing the Early Later Stone Age technologies that preceded it. An alternative model, which we term the LGM acceleration hypothesis, suggests that the Robberg developed slowly as existing technologies were modified and expanded to function flexibly in a variety of LGM environments. In this paper, we test these hypotheses at Melikane through attribute and morphometric analyses of > 17,000 lithic artifacts. Intrasite continuities and gradual, asynchronous changes in flaking systems are inconsistent with rapid replacement. Instead, the subtle refinement of bladelet reduction strategies alongside climate shifts and a reorganization of mobility and settlement systems supports our LGM acceleration hypothesis. However, Melikane’s combination of highland-specific idiosyncrasies and shared flaking systems with sites in less marginal environments suggests a complex role for cultural transmission. We suggest that periodic isolation throughout the LGM encouraged the development of new flaking systems, the most flexible of which were adopted in a variety of environments when biogeographic barriers to transmission were lifted.
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Data Availability
The data that support the findings of this study are available from the corresponding authors upon request.
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Acknowledgements
Melikane was excavated under permits granted by the Ministry of Technology, Environment and Culture (MTEC), Kingdom of Lesotho. We extend thanks to MTEC, and particularly bo-Mme Matsosane Molibeli, Moitheri Molibeli, Moliehi Ntene, Tsepang Shano, Puseletso Moremi, and the late Ntsema Khitsane, for their continued support. We are grateful for the hospitality of the Melikane villagers, especially Morena Pule Machine. We are indebted to Mme Refiloe Okello for her friendship and support. We appreciatively acknowledge the assistance of Jim Moss and John Klausmeyer of the University of Michigan Museum of Anthropological Archaeology (UMMAA) for facilitating access to photographic equipment. We are extremely grateful to Bruce Worden, UMMAA’s illustrator, for his wonderful work on Fig. 10.
Funding
Fieldwork at Melikane was supported by generous grants from the Wenner-Gren Foundation, the British Academy, the Prehistoric Society, and the McDonald Institute for Archaeological Research and the Centre of African Studies (University of Cambridge).
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K. Pazan conducted the lithic analysis, statistical analyses, and wrote the manuscript, with contributions from B. A. Stewart. B. A. Stewart and G. Dewar secured funding, conducted excavations, and obtained dates and paleoenvironment data. All authors reviewed the manuscript.
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Pazan, K., Stewart, B.A. & Dewar, G. Early LGM Environments Accelerated the MSA/LSA Transition in Southern African Highlands: the Robberg’s Emergence at Melikane (Lesotho). J Paleo Arch 6, 24 (2023). https://doi.org/10.1007/s41982-023-00150-2
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DOI: https://doi.org/10.1007/s41982-023-00150-2