P41 Integrating GPR and Electrical Resistivity to prospect Mortuary Urns on a Archaeological Site of Amazon Region, Brazil

摘要

A variety of geophysical methods are widely used in the studies of archaeological sites, to infer the most appropriate places for excavation work in areas not investigated by direct drill, because, besides being cheaper to obtain information over large areas, they preserve the remains, because the geophysical methods are non-invasive procedures. The archaeological site, investigated here, is located on the campus of Federal University of Amapa, City of Macapa, Brazil. The discovery of this'site occurred during the excavation of a trench 50 meters long to drain rainwater. The excavation of this trench revealed the presence of a layer of pebbles of sandstones with ferruginous cement, twelve and (12) pieces of pottery and two lytic pendants. We carried out two campaigns over the area chosen with geophysical methods of resistivity and GPR . The profiles followed a raised grid of 15 parallel lines spaced 1.0 meters. The GPR used a 400 MHz antenna and the electrical resistivity profile used a dipole-dipole array with offset of one (1) meter between electrodes and five (5) sampling levels. The application of geophysical methods over the area gave the location of five (5) mortuary ums and the base of the pebble layer, which is used to protect the indian cemetery.