The distribution of certain rocks in the landscape allows us to reconstruct diverse aspects of past hunter-gatherer behavior. In this work, we evaluate the mobility patterns employed by these groups and the presence or absence of boundaries in the Aeolian system of the center of Argentina. To accomplish this objective, we consider two types of evidence: 1) raw material frequencies and distributions in three areas of this Aeolian System and 2) presence and frequency of knapping stones from Tandilia sources. We construct a fall-off curve that is based on the relationship between the frequency of an item and the distance to the source of supply. The characteristics of each area yielded the human groups that inhabited delineate different modes of exploitation of the rocks. The fall-off curve documents a steep drop-off between 300 and 350 km from the Tandilia source and the spatial analysis indicates that within this distance the source probably represents the threshold of direct access to the quarries. Tandilia stone-tools seem to systematically supply a relatively wide area of the Central Pampean Dunefields of the Pampa grasslands, through varied processes, but they arrive at very low frequencies over great distances. The presence of Tandilia rocks in the Western Pampean Dunefields and Western Pampas Sand Mantles and Dunefields indicates social interaction between human groups that shared some common technological knowledge. The presence of stones in the Central Pampean Dunefields coming from the xerophytic woodland of the Dry Pampas can be related with contacts and exchanges among the hunter-gatherer group that occupied different territories.

中文翻译：

---

阿根廷中部沙丘地带的狩猎采集者流动性和领土

景观中某些岩石的分布使我们能够重建过去狩猎采集行为的不同方面。在这项工作中，我们评估了这些群体所采用的流动模式以及阿根廷中心风神系统中边界的存在与否。为了实现这一目标，我们考虑了两种类型的证据：1）该风成系统三个区域的原材料频率和分布以及 2）来自 Tandilia 来源的敲击石的存在和频率。我们根据物品的频率与到供应源的距离之间的关系构建了一条下降曲线。每个地区的特征产生了居住的人类群体，描绘了不同的岩石开采方式。下降曲线记录了距 Tandilia 源 300 至 350 公里的陡峭下降，空间分析表明，在此距离内，源可能代表直接进入采石场的阈值。Tandilia 石器似乎通过不同的过程系统地供应了潘帕草原中部潘佩斯沙丘相对广阔的区域，但它们在很远的距离内以非常低的频率到达。西潘帕斯沙丘和西潘帕斯沙地幔和沙丘中的坦迪利亚岩石的存在表明了共享一些共同技术知识的人类群体之间的社会互动。