Abstract
Several geoarchaeological techniques have been employed in evaluating an open-air site within a uniform sand matrix, near Rio Maior, Portugal. Electrical resistivity data, acquired at the Upper Palaeolithic site complex of Cabeço do Porto Marinho (CPM), delineated an important new occupational locus. This result was confirmed, first by auger testing which recovered subsurface artefacts, and then by direct excavation. In addition, 107 samples were recovered at the site for magnetic susceptibility measurements. Comparisons between magnetic susceptibility profiles from two loci, including the new area at CPM, show distinctive patterns which allow direct correlation between the occupation areas. These methods provide quick and inexpensive means for investigators to evaluate new sites or to correlate between and within sites, without resorting to other more time-consuming and expensive techniques.
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