A NEW METHOD TO DATE PETROGLYPHS

Abstract

A new calibrated method based on erosion phenomena is presented for the dating of petroglyphs (rock carvings and engravings) and geomorphic surfaces. In contrast to previous methods of petroglyph dating, which sought to determine the age of various mineral and organic deposits coating the art, microerosion analysis attempts to ascertain the time of mark production itself, by creating a geomorphologically based time frame. The method involves the establishment of calibration curves for the crucial variables to be considered. These are the rock type and climate of a particular region, microerosional indices and age. The theory, practical application, and prerequisites of the method are considered, and the paper concludes by defining the disadvantages and advantages of the method.

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