Abstract Analysis of 519 obsidian artifacts (pebbles, debitage, cores and small bifaces) by nondestructive X-ray fluorescence from forests and steppes of southern Lanín National Park in the northern Patagonian Andean region, from Lácar (chemical group QU/AP), Lolog (CP-LL 1), Filo Hua-Hum (FHH), Paillakura (Pk, former unknown 1 group), Meliquina (MQ, former unknown group 2) and Yuco (YC) sources. Neutron activation analysis was applied to 29 of the artifacts. We identified for the first time the presence of obsidian from distant Covunco (PC1) in the center of Neuquén. This paper is the first English language publication of our ongoing, ten-year-long research. In accordance with previous work, but using other analytical techniques, the most frequently used sources during the late Holocene remain CP/LL 1 and Pk, here we add YC, mainly by the incorporation of new sites recently surveyed in the islands and the coast of Lake Lácar, next to its source. Another result consistent with previous work is the absence of obsidian from Mendoza and Chilean sources; therefore, we suggest these obsidians circulate just to the east and northeast, allowing us to discuss issues of human territoriality during the Late Holocene.

中文翻译：

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全新世晚期（北阿根廷），北巴塔哥尼亚森林地区和邻近地区的黑曜石分布

通过对巴塔哥尼亚安第斯山脉北部拉南国家公园南部森林和草原的519黑曜石文物（鹅卵石，借记，核子和小双面）进行无损X射线荧光分析，来自洛格（Lácar）（化学组QU / AP）（ CP-LL 1），Filo Hua-Hum（FHH），Paillakura（PK，以前未知的1组），Meliquina（MQ，以前未知的2组）和Yuco（YC）来源。将中子活化分析应用于29个伪像。我们首次发现了来自内乌肯中心的遥远的Covunco（PC1）的黑曜石。本文是我们正在进行的为期十年的研究的第一本英语出版物。根据先前的工作，但使用其他分析技术，在全新世晚期，最常用的震源仍然是CP / LL 1和Pk，在这里我们加上YC，主要是通过合并最近在拉卡尔湖的岛屿和海岸附近对其进行调查的新站点来实现的。与先前工作一致的另一个结果是，门多萨和智利没有黑曜石。因此，我们建议这些黑曜石只向东和向东北传播，这使我们可以讨论全新世晚期的人类领土问题。