New Evidence of Grinding Activities in Patagonian Steppe During the Late Holocene (ca. 2000 Years BP): the Laguna Azul Site (somuncurá Plateau, Río Negro Province, Argentina)
Lithic technology(2022)
摘要
is paper aims to present the first record of micro vegetable remains in grinding-stone tools found in hunter-gatherer contexts located in Laguna Azul (Somuncura plateau, Argentina). These grinding-stone tools resulted from excavations of two hunting blinds (known as "parapets") related to late Holocene radiocarbon dates of 1756 +/- 28 years BP (D-007084; delta 13C = 20.2 parts per thousand) and 1906 +/- 26 years BP (D-007085; delta 13C = -19.8 parts per thousand). The combination of micro-wear and starch grains studies allows us to discuss the autochthonous and allochthonous vegetation processing activities. From these remains, four types of vegetation with nutritive potential were identified: Chenopodoceas, Amaranthaceas, Prosopis sp. and Araucaria sp. The grinding stone tools' microscopic analysis gave evidence of the specific processing motions employed. This evidence-based data enables us to discuss the relationship between the hunter-gatherers and their environment during the late Holocene and also to establish new assumptions about circuits of mobility and communication.
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关键词
Starch grains,use-wear analysis,grinding tools,hunter-gatherers,Somuncura plateau
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