In the lower basin of the Colorado River (Buenos Aires province, Argentina) the Zoko Andi 1 archaeological site was occupied by hunter-gatherer groups during the Late Holocene (ca. 1500–400 ¹⁴C years BP). The site is the only one in the entire study area that has an important presence of charcoals in a stratigraphic context, particularly related to the Lower Component, dated at ca. 1500–1300 ¹⁴C years BP (1430–1296 cal years BP). This contribution presents the first anthracological results for the study area, which contribute to the understanding of the use of woody resources by hunter-gatherers and to the knowledge about the past vegetal communities and climate in the eastern Pampa-Patagonia transition. The charcoals were assigned to Prosopis caldenia, Prosopis sp., Senna sp. (Fabaceae), Jodina rhombifolia (Santalaceae), Condalia sp. (Rhamnaceae) and Larrea sp. (Zygophyllaceae). The archaeological charcoals show the existence of an ecotone between the Monte and Espinal Provinces during the Initial Late Holocene, which indicates the xerophytic open forests with a predominance of Prosopis caldenia and xeric shrub-dominated by Larrea ssp. The vegetation developed under an arid to semi-arid climate. This is consistent with other proxies (geomorphology, sedimentology, phytoliths, and microvertebrates) suggesting a similar environment for this area. Prosopis and Condalia have high caloric power and long fuel duration. These burning xerophytic forest resources were probably used by hunter-gatherers for cooking, heating, and lighting.

在科罗拉多河下游流域（布宜诺斯艾利斯省，阿根廷）的Zoko安迪1考古遗址被狩猎者群体晚全新世时期沦陷（约1500-400 ¹⁴ Ç年BP）。该地点是整个研究区域中唯一一个在地层环境中存在重要木炭的地点，尤其是与下半部有关的地点，其历史可追溯至约3年。1500–1300 ¹⁴ C年BP（1430–1296 cal BP）。该研究成果是该研究区域的第一个人类学研究成果，有助于人们了解狩猎者对木质资源的利用情况，并有助于了解东部南美大草原-巴塔哥尼亚过渡时期的过去植物群落和气候。木炭被分配给Prosopis caldenia，Prosopis sp。，Senna sp。（Fabaceae），Jodina rhombifolia（Santalaceae），Condalia sp。（鼠李科）和Larrea sp。（霸王龙）。考古木炭显示，在全新世初期晚期，在蒙特省和埃斯皮纳尔省之间存在一个过渡带，这表明旱生开阔的森林中主要存在Prosopis caldenia和以Larrea ssp为主的干灌木。植被在干旱至半干旱的气候下生长。这与其他代理（地貌，沉积学，植物石和微脊椎动物）一致，表明该地区的环境类似。Prosopis和Condalia热量高，燃料持续时间长。这些燃烧的旱生森林资源很可能被狩猎采集者用来做饭，取暖和照明。