eprintid: 10180582 rev_number: 7 eprint_status: archive userid: 699 dir: disk0/10/18/05/82 datestamp: 2023-11-07 14:10:16 lastmod: 2023-11-07 14:10:16 status_changed: 2023-11-07 14:10:16 type: article metadata_visibility: show sword_depositor: 699 creators_name: Shipton, Ceri title: Predetermined Refinement: the Earliest Levallois of the Kapthurin Formation ispublished: pub divisions: UCL divisions: B03 divisions: C03 divisions: F31 divisions: K74 keywords: Science & Technology, Social Sciences, Life Sciences & Biomedicine, Anthropology, Archaeology, Acheulean, Handaxe, Cleaver, Large flake blanks, MSA, MIDDLE STONE-AGE, FLAKE SCAR DENSITY, LITHIC TECHNOLOGY, CORE TECHNOLOGY, SITE, HANDAXE, KENYA, OLORGESAILIE, REDUCTION, TRANSPORT note: Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. abstract: Levallois technology characterizes the Middle Stone Age/Middle Palaeolithic, but one of its earliest manifestations is from the preceding Acheulean of the Kapthurin Formation, in the Rift Valley of east Africa. Here, ~ 400 ka, hominins were creating large flake blank handaxes and cleavers through Levallois knapping. Comparing these tools with other Rift Valley Acheulean assemblages made on large flakes shows those of the Kapthurin Formation are distinguished by their thinness. This was achieved through symmetrical centripetal preparation of gentle upper surface convexities on the Levallois cores, the creation of a protruding facetted platform, and proximal bevelling of the upper surface. A large elongate flake blank was struck from the facetted platform, then finished with marginal trimming to create the symmetrical and regular edge of the handaxe or cleaver. As they were used for the creation of handaxes and cleavers, the Kapthurin Acheulean Levallois cores and flakes are much larger than that of the Middle Stone Age, with overshot flakes from excessive force a more frequent error. The Acheulean Levallois is further distinguished from those of the Middle Stone Age by the lack of recurrent flaking, with cores apparently producing only a single preferential flake without any repreparation of the main flaking surface, despite the cores being big enough for further large blank removals, and even if the preferential removal overshot and was abandoned. The key advantage offered by Levallois in general is large thin elongate flakes. In its Kapthurin Acheulean manifestation, Levallois was used to create an individual tool, but in the Middle Stone Age it was often used to make toolkits. date: 2022-02-12 date_type: published publisher: SPRINGERNATURE official_url: https://doi.org/10.1007/s41982-021-00109-1 oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 2103858 doi: 10.1007/s41982-021-00109-1 lyricists_name: Shipton, Ceri lyricists_id: CSHIP61 actors_name: Shipton, Ceri actors_id: CSHIP61 actors_role: owner full_text_status: public publication: Journal of Paleolithic Archaeology volume: 5 number: 1 article_number: 4 pages: 29 issn: 2520-8217 citation: Shipton, Ceri; (2022) Predetermined Refinement: the Earliest Levallois of the Kapthurin Formation. Journal of Paleolithic Archaeology , 5 (1) , Article 4. 10.1007/s41982-021-00109-1 <https://doi.org/10.1007/s41982-021-00109-1>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10180582/1/Kapthurin%202022.pdf