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Lipid Residues Preserved in Sheltered Bedrock Features at Gila Cliff Dwellings National Monument, New MexicoBuonasera, Tammy 31 October 2016 (has links)
Bedrock features represent various economic, social, and symbolic aspects of past societies, but have historically received little study, particularly in North America. Fortunately, new techniques for analyzing spatial configurations, use-wear, and organic residues are beginning to unlock more of the interpretive potential of these features. Though preliminary in nature, the present study contributes to this trend by documenting an application of lipid analysis to bedrock features in a dry rockshelter. Results of this initial application indicate that bedrock features in dry rockshelters may provide especially favorable conditions for the preservation and interpretation of ancient organic residues. Abundant lipids, comparable to concentrations present in some pottery sherds, were extracted from a bedrock grinding surface at Gila Cliff Dwellings National Monument and analyzed using gas chromatography-mass spectrometry. Though the lipids were highly oxidized, degradation products indicative of former unsaturated fatty acids were retained. Comparisons to experimentally aged residues, and absence of a known biomarker for maize, indicate that the bulk of the lipids preserved in the milling surface probably derive from processing an oily nut or seed resource, and not from processing maize. Substantially lower amounts of lipids were recovered from a small, blackened cupule. It is hypothesized that some portion of the lipids in the blackened cupule was deposited from condensed smoke of cooking and heating fires in the caves. Potential for the preservation of organic residues in similar sheltered bedrock contexts is discussed, and a practical method for sampling bedrock features in the field is described.
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Laying the Foundation for a Fremont Phytolith Typology Using Select Plant Species Native to Utah CountyPearce, Madison Natasha 01 December 2017 (has links)
Archaeobotanical evidences for the presence of wild plants at Fremont archaeological sites are numerous. However, little can be positively argued for why those plants are present, if they were used by site inhabitants, and how they were used. Additionally, there are likely several wild plants that were used but that do not appear in the archaeobotanical record as pollen or macrobotanicals, the two most commonly identified plant remains. I argue that it is possible to provide better interpretations for how and why the Fremont used plants by researching how their historic counterparts, the Goshute, Shoshone, Ute, and Southern Paiute, used the same plants that are identified at prehistoric sites. I further argue that a phytolith typology for Fremont archaeology can provide more insight into prehistoric plant use. I demonstrate its utility through a phytolith analysis of ground stone tools from Wolf Village, a Fremont site in Utah County.
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Le macro-outillage dans l'Ouest de la France : pratique économiques et techniques des premières sociétés agropastorales / Ground stone tools in Western France during the Neolithic and the early Bronze AgeDonnart, Klet 30 June 2015 (has links)
Le macro-outillage est un outillage en pierre dont les supports sont bruts ou peu façonnés. Il est traditionnellement exclu des études de l’industrie lithique taillée et il en résulte une certaine méconnaissance de ce mobilier. Cette thèse tente de combler cette lacune dans l’Ouest de la France, du Néolithique ancien à l’âge du Bronze ancien. Sur la base d’une vingtaine d’assemblages fournissant un corpus de près de 3000 pièces, la typologie de cet outillage est d’abord établie. Une quarantaine de types d’outils sont ainsi décrits et interprétés, avec plus ou moins de précision selon la quantité et la qualité des données disponibles. La démarche est ensuite constamment transversale, pour interroger cet outillage sur un maximum d’aspects des premières sociétés agropastorales. Suivant le déroulement de la chaîne opératoire, une approche technofonctionnelle documente la conception et la gestion de cet outillage. Le macro-outillage se révèle être un sous-système technique cohérent, avec des stratégies adaptées aux ressources et aux besoins, de bonnes connaissances techniques et une grande importance économique. Une première approche chronoculturelle aboutit à des résultats mitigés, d’abord en raison d’une documentation relativement insuffisante comparée à l’étendue de l’espace-temps considéré dans ce travail, mais aussi parce qu’il s’agit d’un mobilier très faiblement empreint de caractères culturels. La géographie apparaît comme un facteur de variation plus important, le macro-outillage étant adapté tant aux ressources qu’aux besoins locaux. Les déterminismes environnementaux sont cependant peu marqués, les hommes ayant toujours pu effectuer des choix en fonction de critères techniques et fonctionnels, plus déterminants. Le macro-outillage se place ainsi à l’interface entre l’homme et son environnement et constitue un excellent marqueur économique. / Ground stone tools are stone tools whose blanks are raw or poorly shaped. They are usually excluded of the knapped stone studies, and consequently are rather unrecognized. This thesis tries to fill this gap in Western France, from the early Neolithic to the early Bronze Age. First, the ground stone tools typology is established by the study of twenty collections, supplying a corpus of about 3000 artefacts. About forty tool types are described and interpreted, with more or less precision depending on the quantity and the quality of the data available. The thesis then follows a diachronic approach, to question these tools on most aspects of the earliest farmers’ societies. Following the chaîne opératoire process, a techno-functional analysis documents the ground stone tools’ conception and management. These tools turn out to compose a coherent technical sub-system, with strategies suited to the people’s resources and to the needs; demonstrating good technical knowledge and a high economic importance. The chronological and cultural analysis leads to mixed results, firstly because data is relatively insufficient compared to the large area and the long period studied, but also because ground stone tools wear very few cultural marks. Geography appears to be a more significant variation factor, as ground stone tools are adapted to both local resources and needs. There is however little environmental determinism, as humans have always been able to make choices according to technical and functional criteria, which are more determining. Ground stone tools therefore link humans and their environment and make an excellent economic marker.
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