Detecting and mapping buried buildings with Ground-Penetrating Radar at an ancient village in northwestern Argentina |
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Authors: | Néstor Bonomo Ana Osella Norma Ratto |
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Institution: | 1. Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 1, (1428) Buenos Aires, Argentina;2. CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina;3. Departamento de Arqueología, Facultad de Filosofía y Letras, Universidad de Buenos Aires, Argentina |
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Abstract: | We describe an archaeo-geophysical investigation performed near the Palo Blanco archaeological site, Catamarca, Argentina. A large area beyond the northern limit of the site was explored with the Ground-Penetrating Radar (GPR) method in order to detect new buildings. The exploration showed signals of mud-walls in a sector that was located relatively far from the previously known buildings. A detailed survey was performed in this sector, and the results showed that the walls belonged to a large dwelling with several rooms. The discovery of this dwelling has considerably extended the size of the site, showing that the dwellings occupied at least twice the originally assumed area. High-density GPR surveys were acquired at different parts of the discovered building in order to resolve complex structures. Interpreted maps of the building were obtained. Different characteristics of the walls were satisfactory determined, in spite of the low contrast of the dielectric constant at their interfaces and the noticeable spatial fluctuations of the signals due to wall collapses. |
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Keywords: | GPR survey Tapia wall signals Formative period in NW-Argentina |
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