ABSTRACT The aim of this paper is to present the first record of engraved stone plaquettes recovered at the Laguna Azul site (LA-P3) located in the Somuncurá plateau (Río Negro, Argentina). The stone plaquettes record is wide and varied in Argentina and especially in the North Patagonia region; however, it mostly consists of surface finds. The four plaquettes from LA-P3 are associated with Late Holocene dates (c.1906–1756 years BP) and in this paper the authors describe their designs and motifs, as complementary studies using different microscopy techniques. LA-P3’s plaquettes displayed red residues which were analysed by SEM-EDX and allowed identification of iron and titanium on their surfaces. This study contributes to the stone plaquette register of North Patagonia, and provides novel information related to their production techniques (mostly incision) and their motifs identified (non-figurative). The low frequency of similar motifs between the sets analysed allows us to propose a certain regionalization of their production.

中文翻译：

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北巴塔哥尼亚地区（Somuncurá高原，里奥内格罗，阿根廷）的雕刻石块，并使用不同的显微镜技术进行分析

摘要本文的目的是介绍在Somuncurá高原（阿根廷里奥内格罗）的Laguna Azul遗址（LA-P3）上发现的雕刻石块的第一个记录。在阿根廷，特别是在北巴塔哥尼亚地区，石块的记录广泛而多样。但是，它主要由地表发现组成。LA-P3的四块板块与全新世晚期（约1906-1756年BP）有关，在本文中，作者描述了它们的设计和图案，作为使用不同显微镜技术的补充研究。LA-P3的碎片显示红色残留物，通过SEM-EDX进行分析，从而可以识别其表面上的铁和钛。这项研究有助于北巴塔哥尼亚的石刻画登记，并提供有关其生产技术（主要是切口）和已确定其图案（非图形）的新颖信息。所分析的集合之间相似基序的频率较低，这使我们可以对它们的产生进行一定的区域划分。