Resumen de Weathering of petroglyphs: direct assessment and implications for dating methods
Petroglyphs weather at varying rates, compared tothe unengraved host rock into which they are carved. Most petroglyphs are significantly harder or significantly softer than surrounding rock, depending on the nature of weathering. Variability and intensity of weathering probably introduces error into radiocarbon, rock varnis and micreoerosion dating methods.
