Here we report the findings from excavations at the open-air Middle Palaeolithic site of Alapars-1 in central Armenia. Three stratified Palaeolithic artefact assemblages were found within a 6-m-thick alluvial-aeolian sequence, located on the flanks of an obsidian-bearing lava dome. Combined sedimentological and chronological analyses reveal three phases of sedimentation and soil development. During Marine Oxygen Isotope Stages 5–3, the manner of deposition changes from alluvial to aeolian, with a development of soil horizons. Techno-typological analysis and geochemical sourcing of the obsidian artefacts reveal differential discard patterns, source exploitation, and artefact densities within strata, suggesting variability in technological organization during the Middle Palaeolithic. Taken together, these results indicate changes in hominin occupation patterns from ephemeral to more persistent in relation to landscape dynamics during the last interglacial and glacial periods in central Armenia.

中文翻译：

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Alapars-1 露天遗址中旧石器时代中期占领和亚美尼亚中部景观变化的证据

在这里，我们报告了在亚美尼亚中部 Alapars-1 露天旧石器时代中期遗址的发掘结果。在一个 6 米厚的冲积-风成序列中发现了三个分层的旧石器时代人工制品组合，位于含黑曜石的熔岩穹顶的侧面。结合沉积学和年代学分析揭示了沉积和土壤发育的三个阶段。在海洋氧同位素阶段 5-3 期间，沉积方式从冲积变为风成，随着土壤层位的发展。黑曜石人工制品的技术类型分析和地球化学来源揭示了地层内不同的丢弃模式、来源开发和人工制品密度，表明旧石器时代中期技术组织的可变性。综合起来，