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Bücher von Alistair Marshall

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  • - Prospection and analysis
    von Alistair Marshall
    100,00 €

    This programme of five geophysical analyses arose from specific problems encountered during survey and excavation of mid-later Iron Age settlement enclosures by the author in the Gloucestershire Cotswolds (UK). At these sites there was a need to supplement detailed magnetic mapping from gradiometry with higher quality data on magnetic susceptibility (MS), in order to establish a more viable basis for assessing patterns of burnt material over and around clearly defined archaeological structures. Paper 1: small Iron Age enclosures: The first project introduces the MS probe within a detailed analysis, supported by data from a range of related sites. These smaller, lightly-defended ditched enclosures, often complexes with appended subenclosures, usually clearly definable by gradiometry, are a common type in the Cotswold and English Midland areas, and present excellent subjects for functional analysis using MS and other geochemical data. Few such detailed studies exist. Paper 2: Iron Age hillforts: The Cotswold area contains a series of hillforts, ranging from smaller and more modestly defended, to larger and often highly defensive sites. This diversity, and the relative absence of data on internal, and especially on any external features, present clear grounds for investigation. MS surveys over the interiors of Iron Age hillforts and adjacent extra-mural areas indicate patterns of activity highly relevant to their functional interpretation, and allow comparison with data from broadly contemporary ditched enclosures. Paper 3: larger Roman settlement:Survey of extensive and complex areas of Iron Age and Roman settlement provides data relevant to their layout and operation. One Roman 'small town' site and one complex of more agrarian Roman settlement, both with known mid-later Iron Age antecedents, were selected, both on a similar gravel substrate. Paper 4: early Bronze Age round barrows: The region includes many funerary areas of Neolithic to Bronze Age date, containing mainly round, but often long barrow sites. MS survey can be applied with some confidence to map distributions of burnt sediment over and around them, and to retrieve at least some information. Detailed survey of barrow monuments and their surrounding areas provides data on the properties of known sites as MS anomalies, indicates the potential for detection of terminal sites, truncated and without apparent above-ground features, and allows association between round barrows and areas of nearby settlement or activity to be assessed. Paper 5: Cotswold area: Extensive survey over a 40 km2 sample of the Cotswold upland and dip-slope reveals patterns of MS relevant to discussion of early land clearance and use, to development and organisation of settlement in the area, also to environmental events in this catchment area of the upper Thames valley and their effects on its hydrology.

  • von Alistair Marshall
    102,00 €

    Two extended papers investigating two contemporary areas of experimental archaeology. Paper 1: Simulation of prehistoric cremation: experimental pyres, and their use for interpretation of archaeological structures. Excavation in 1990-1992 of the round barrow at Guiting Power 3, located in the Gloucestershire Cotswolds (England), produced burnt surfaces, scatters of fire-debris, and deposits of cremated human bone in primary locations. All of these elements were critical for interpretation of the sequenceof ritual at the site, and for discussion of its general function as a monument. Analysis of a series of fully-monitored experimental cremation pyres is used to supplement the interpretation of burnt pyre-bases, and other associated archaeological features, of the type found under Bronze Age round barrows in Britain, and to add detail to the process of ancient cremation. Paper 2: Methods of grain storage during the Iron Age in southern Britain: further investigation by experiment. Discovery of unusually large, rock-cut 'silo-pits' at certain Iron Age enclosures in the Cotswolds (Gloucestershire, UK), with parallels elsewhere, prompted examination of their potential as unsealed but roofed granaries, in view of practical difficulties inherent in sealing them at ground level and other structural evidence. A series of fully-monitored experiments allows their performance during over-winter storage of grain to be assessed, and compared with operation of smaller sealed pits.

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