The mounds of the India Muerta region, Uruguay, as pit oven stations. New data

Christopher Duarte , Roberto Bracco Boksar , Ofelia Gutiérrez , Daniel Panario
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Abstract

In the India Muerta-Paso Barrancas region (Rocha, Uruguay) more than 600 prehistoric mounds have been identified. The archaeological record of these terrestrial structures includes integrated residues of human activity: bone remains, lithic and bone artifacts, charcoal, ochre, a small number of ceramic fragments and human burials. But the most outstanding characteristic of these structures is that they are mounds of thermoaltered sediment. Between 25 % and 30 % of their matrix are fragments of anthills that reaching 6 cm or more in their largest dimension and that were heated to minimum temperatures of 350/380ºC. This work presents a battery of TL and OSL dates carried out on the thermoaltered sediment of the highest and oldest mound structure in the region, known as “Cerro de la Viuda”. The data obtained with the two techniques are compared, along with 14C chronologies from the same mound. The correlations between the dates obtained and the daily processes that would have led the prehistoric groups of the region to produce, over centuries, of mounds of thermoaltered sediments are analyzed and interpreted. This is a contribution to the understanding of the chronology and function of anthropogenic mounds in the India Muerta-Paso Barrancas region. The data presented support the hypothesis that the sampled clasts were heated in situ and therefore that the mounds were built in association with earth ovens.
印度穆尔塔地区的土丘,乌拉圭,作为坑炉站。新数据
在印度Muerta-Paso Barrancas地区(乌拉圭罗查),已经发现了600多个史前土丘。这些陆地结构的考古记录包括人类活动的综合残留物:骨骸,石器和骨制品,木炭,赭石,少量陶瓷碎片和人类埋葬。但这些结构最突出的特征是它们是热变沉积物的土丘。25% %和30% %之间的基质是蚁丘的碎片,其最大尺寸达到6 厘米或更多,并加热到350/380ºC的最低温度。这项工作展示了对该地区最高和最古老的土丘结构的热变沉积物进行的一系列TL和OSL日期,称为“Cerro de la Viuda”。比较了两种技术获得的数据,以及来自同一土丘的14C年表。研究人员分析和解释了所获得的日期与导致该地区史前群体在几个世纪内产生大量热变沉积物的日常过程之间的相关性。这对了解印度Muerta-Paso Barrancas地区人为土丘的年代学和功能有贡献。所提供的数据支持这样一种假设,即取样的碎屑是在原位加热的,因此这些土丘是与土炉有关的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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