Andesite and obsidian accessibility and distribution during the Holocene in north-west Santa Cruz province (south-central Patagonia), Argentina

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2018-12-15 DOI:10.2218/jls.2800

M. Sacchi, Damián L. Bozzuto, A. Guraieb, M. T. Civalero, Nicolás Maveroff

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引用次数: 3

Abstract

This paper discusses different aspects related to the andesite and obsidian availability and circulation routes in different moments of the occupation sequence in the Pueyrredón-Posadas-Salitroso (PPS) Lake Basin in the north, and the Burmeister-Belgrano (BB) Lake Basin to the south (north-west Santa Cruz province, Argentinian Patagonia). The distribution of raw materials - both in space and time - allows us to assert that potential regional circulation routes would have been affected differentially by the palaeolakes present from the Pleistocene up until the mid-Holocene. We are taking into account three sites: Cueva Milodón Norte 1 (CMN1), located in the northeast coast of the Pueyrredón Lake, Cerro de los Indios 1 (CI1) (central portion of the PPS Basin), and Cerro Casa de Piedra 7 (CCP7) (near to the Burmeister Lake). This investigation considers six periods, based on the calibrated ranges from 73 radiocarbon dates: 17 from CI1, 14 from CMN1, and 42 radiocarbon dates from CCP7. As a result of this analysis we can conclude that, in sites with a higher density of occupation such as CI1 and CCP7, the use of obsidian (non-local rock) and andesite or basalt did not vary over time. In the case of CMN1, access to the sources of these raw materials varied according to the presence of large bodies of water, although it does not seem to have influenced the procurement of these rocks.

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阿根廷圣克鲁斯省西北部（巴塔哥尼亚中南部）全新世安德西岩和黑云母的可及性和分布

本文讨论了在北部的Pueyrredón-Posadas-Salitroso（PPS）湖盆地和南部的Burmeister-Belgrano（BB）湖盆地（阿根廷巴塔哥尼亚圣克鲁斯省西北部），在占领序列的不同时刻，与安山岩和黑石的可用性和环流路线有关的不同方面。原材料在空间和时间上的分布使我们能够断言，从更新世到全新世中期，潜在的区域环流路线会受到古湖泊的不同影响。我们考虑了三个地点：Cueva Milodón Norte 1（CMN1），位于Pueyrredón湖东北海岸，Cerro de los Indios 1（CI1）（PPS盆地的中部）和Cerro Casa de Piedra 7（CCP7）（靠近Burmeister湖）。根据73个放射性碳年代的校准范围，本次调查考虑了六个时期：17个来自CI1，14个来自CMN1，42个来自CCP7。根据这一分析，我们可以得出结论，在CI1和CCP7等占用密度较高的场地，黑石（非本地岩石）和安山岩或玄武岩的使用不会随着时间的推移而变化。在CMN1的情况下，这些原材料的来源根据大型水体的存在而有所不同，尽管这似乎没有影响这些岩石的采购。

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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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.