The Amakomanak site (AMR-00095), dated around 7500 BC, is located in the Noatak National Preserve in northwestern Alaska and presents an important microblade component (microblade cores, core tablets, and microblades) made of local chert. During the late Pleistocene and the early Holocene, microblade technology is widespread in central Alaska, dominated by Campus-style microblade cores (wedge-shaped microblade cores). The Amakomanak assemblage is primarily composed of larger prismatic microblade cores, similar to assemblages from other northwestern Alaskan sites compared here. This paper argues that raw material available in each area may have played a major role in the different microblade core variants described. Indeed, raw material availability in the northwestern region could be one of the major reasons behind the production of larger prismatic cores, as opposed to central Alaska Campus-style cores usually made on smaller river cobbles. The paper also presents the results of a morphometric analysis of microblade cores and microblades from the Amakomanak site, comparing the data to both experimentally derived data sets on microblade-flaking modes, as well as other microblade assemblages in Alaska and Siberia.

中文翻译：

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Amakomanak：阿拉斯加西北部的全新世微刀片早期遗址

Amakomanak遗址（AMR-00095）的历史可追溯到公元前7500年，位于阿拉斯加西北部的Noatak国家级自然保护区，具有重要的微刀片成分（微刀片核心，核心药片和微刀片），由当地的石制成。在更新世晚期和全新世早期，微刀片技术在阿拉斯加中部广泛传播，以校园风格的微刀片核心（楔形微刀片核心）为主导。Amakomanak组件主要由较大的棱柱形微刀片核心组成，与此处比较的西北阿拉斯加其他站点的组件相似。本文认为，在每个领域可用的原材料可能在描述的不同微刀片核心变体中起了主要作用。确实，与通常在较小的河卵石上制成的阿拉斯加中央校园型岩心不同，西北地区的原材料供应可能是生产较大棱柱形岩心的主要原因之一。本文还介绍了来自Amakomanak站点的微刀片核心和微刀片的形态计量分析结果，将数据与实验得出的关于微刀片剥落模式的数据集以及阿拉斯加和西伯利亚的其他微刀片组合进行了比较。