Avances metodológicos en el estudio de las construcciones de pirca de las sierras Bonaerenses: las técnicas de aerofotointerpretación

The techniques of archaeological photogrammetric interpretation have been of limited application in the Pampa region, situation that began to change in the last decade under the impulse of some research projects of historical archaeology. The present work synthesizes the results of the use of this tool in the study of a group or stone constructions located in the central portion Tandilia range, where it was used basically as a remote sensing technique.The way in which the aerial photographs were analyzed is described and, through the presentation of different cases –both positive and negative identifications -, the advantages and the limitations of its application are discussed. One of the conclusions is that the systematic study of aerial photographs made possible the selection of the places where it was probable to find stone buildings as well as to get a corpus of general environmental information, optimizing the time and the resources destined to fieldwork surveying.