Changes in the ways Paleolithic foragers exploited raw material sources are linked to mobility, the demands of production, and investment in quarrying. Here, we analyze the use of raw materials in a long series of superimposed layers from Tabun Cave dating to the Middle Pleistocene, attributed to the Lower and Middle Paleolithic periods. Using the cortex preserved on the surfaces of artifacts, including blanks, tools and cores, we distinguished between flints obtained from primary and secondary geological contexts. The results from Tabun Cave indicate that the exploitation of secondary sources was fairly common during the earlier part of the Lower Paleolithic sequence. It decreased during the later part of the Acheulo-Yabrudian complex of the Lower Paleolithic, coinciding with growing use of predetermined technological strategies, which demand high-quality raw materials. By the Middle Paleolithic, primary and secondary raw materials are generally designated for different reduction trajectories, suggesting a growing distinction and formalization of technological strategies. The need for the 'best' stone for Middle Paleolithic laminar and Levallois production may have necessitated increased investment in raw material procurement. During most of the Lower Paleolithic, raw material needs could have been met easily through a purely embedded strategy, in which raw material was collected while focusing on other activities. Starting in the late Acheulo-Yabrudian and especially during the Middle Paleolithic, the focus on primary geological contexts may have demanded greater planning of visits to raw material outcrops. In other words, in the Middle Paleolithic and possibly already during the very end of the Lower Paleolithic, raw material procurement had greater influence on patterns of movement through the landscape.

中文翻译：

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原材料采购策略的演变：来自以色列Tabun Cave的深层视角。

旧石器时代的觅食者利用原材料的方式的变化与机动性，生产需求和采石业的投资有关。在这里，我们分析了从塔本洞穴到中更新世的一系列叠加层中的原材料的使用情况，这些层归因于旧石器时代的中下时期。使用保存在人工制品（包括毛坯，工具和岩心）表面上的皮质，我们可以区分从原始和次要地质环境获得的火石。Tabun Cave的结果表明，在下旧石器时代早期，次生资源的开采相当普遍。在下旧石器时代的阿彻洛-亚布鲁底山脉群后期，它减少了，这与预定技术策略的使用日趋一致，需要高质量的原材料。在旧石器时代中期，通常将主要和次要原材料指定为不同的还原轨迹，这表明技术策略的区别和形式化日渐增多。中古石器层流和Levallois生产对“最好”石材的需求可能需要增加对原材料采购的投资。在下旧石器时代的大多数时期，可以通过完全嵌入的策略轻松满足原材料需求，在该策略中，在集中精力进行其他活动的同时收集原材料。从Acheulo-Yabrudian晚期开始，尤其是在旧石器时代中期，对主要地质背景的关注可能要求对探访原材料的露头进行更大的计划。换一种说法，