23 research outputs found

    The Archaeology and Paleoecology of the Aubrey Clovis Site (41DN479) Denton County, Texas

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    This report contains the results of interdisciplinary investigations of the Aubrey Clovis Site (41DN479}, located at Lake Ray Roberts, Denton County, Texas, and conducted by the Center for Environmental Archaeology, University of North Texas for the U.S. Army Corps of Engineers, Fort Worth District. Exposed by construction of the artificial outlet channel for the reservoir, the site is a multi-cluster complex of archaeological features and artifact-fauna! concentrations buried 7-9 meters below the flood plain of the Elm Fork Trinity River. The Clovis-age materials are geologically situated on a paleo surface within a 14 m thick sequence of late Quaternary deposits, associated with spring, lacustrine, alluvial and colluvial sedimentary environments. A stratigraphically consistent set of 23 radiocarbon ages establishes a sound chronometric frame for these deposits between 1.6 Ka and 14.2 Ka. The Clovis occupations are directly dated by two radiocarbon ages of ca. 11,550 Ka determined on charcoal from a hearth. These ages are securely bracketed by stratigraphically and numerically consistent ages above and below, within the period of ca. 12,300 to 10,940 Ka. Paleoenvironmental reconstructions for the periods before, during and after Clovis occupations have been afforded by pollen, insects, mollusks, vertebrate faunas as well as sedimentary and geochemical data. In the early post-glacial period, the site environs was a cool grassland with moderate effective precipitation, that evolved towards significantly warmer and drier conditions prior to Clovis occupations. The environment ameliorated at about the time of occupations, but exhibited a maximum of Late Quaternary mammalian biodiversity. Clovis artifacts and faunas occur in multiple clusters, including ·camps 8 and F that contain ca. 9,800 lithic artifacts, over 4,000 fauna! remains and features including hearths, lithic concentrations and a pit considered to be a well. These concentrations were adjacent to a Clovis-age pond and river. Bison bones and associated artifacts indicate a butchering (and kill ?) locus on the pond shore opposite Camp 8 . Subsistence data from the camps indicate exploitation of a broad set of animals, ranging from mega-mammals (Bison and possibly Mammoth) down to small game, fish and birds. Lithic artifacts show procurement from a minimum of almost 200 km from the site, with materials dominated by Tecovas quartzite, white Novachert and Edwards chert, and including chalcedony, Alibates chert, and Morrison or Dakota sandstone. The assemblage is dominated by repair and maintenance debris associated with bifacial and unifacial tools. Latest stage manufacture is indicated for a biface(s), while all other activities were apparently performed with only resharpening/ repair of other stone tools. Detailed spatial patterning indicates quite well differentiated activities within and between these occupation clusters. Overall, the uniquely detailed record of Clovis occupations at Aubrey registers an adaptive strategy characterized by high mobility, broad exploitation of dispersed, variable resources, long-distance raw material procurement coupled with efficient blank and tool depletion, and a probable combination of functional flexibility and strong within group task differentiation and integratio

    A Spatial Distribution Study of Faunal Remains from Two Lower Magdalenian Occupation Levels in El MirĂłn Cave, Cantabria, Spain

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    Abstract: Human behaviour can be reconstructed by analysing specific activities and campsite organization using spatial analysis. The dense occupation layers of the Lower Cantabrian Magdalenian in the Northern Spain reveal varied aspects of Upper Palaeolithic lifeways, including evidence of specific localized activities. The outer vestibule of El Mirón cave has a particularly rich and intact Lower Magdalenian occupation horizon, Levels 15–17. The excavations in the outer vestibule “Cabin” area of the site revealed excellent bone preservation. Artefacts and faunal remains were individually recorded and sediments water-screened to yield a large sample of archaeological finds and spatial data. Zooarchaeological analysis provided the taxonomic, anatomic and taphonomic determination of the faunal individual finds. Smaller animal remains were categorized and counted; special attention was given to the identification of anthropogenic modifications such as burnt bones or bone flakes. These small refuse items are considered to be useful, in situ indicators of localized activities. The spatial distribution analysis of this dense and complex palimpsest of El Mirón Lower Cantabrian Magdalenian layers required GIS based methods including density analysis, heatmaps and cluster analysis. Based on the spatial distribution of Level 15 and 16 faunal remains, different activity areas were identified comprising hearth, working and dropping zones. These results imply the deliberately segregated use of space within the Lower Cantabrian Magdalenian site area, in which bone-processing activities played a central rol

    The spatial structure of lithic landscapes : the late holocene record of east-central Argentina as a case study

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    Fil: Barrientos, Gustavo. DivisiĂłn AntropologĂ­a. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Catella, Luciana. DivisiĂłn ArqueologĂ­a. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Oliva, Fernando. Centro Estudios ArqueolĂłgicos Regionales. Facultad de Humanidades y Artes. Universidad Nacional de Rosario; Argentin

    Archaeological Investigations at Five Prehistoric Sites at Lewisville Lake, Denton County, Texas

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    This report describes the results of excavations performed by the Institute of Applied Sciences at the Lewisville Lake project, Denton County, Texas
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