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- W2280387503 abstract "Rock art is on walls, boulders and bedrock, the last being petroforms or stone alignments depicting animals and other things. Wall and boulder art includes pictographs or painted rock, petroglyphs or engraved rock, or their combination. 20 century archaeologists and rock art historians focused on pictographs because of their colour and possible stylistic dating. Besides style, seven other mostly unsuccessful dating methods existed 40 years ago. They include stratigraphy, superposition, erosion, lichenometry, ethnohistory, prehistory and some laboratory methods. Several are modified for use today. Stratigraphically, most wall motifs do not have buried ivory, bone or wood art that resembles the motifs suitable for crossdating. Superimposed art determines sequence, not date. Erosion is of limited use, as weathering varies with location, microclimate and rock resistance. Sandstone and other sedimentary rocks erode easily and are poor for dating. Lichen growth, typically of Rhizocarpon geographicum, starts any time after the art, its diameter growing only roughly proportional with time. Measuring the largest lichen thallus only gives its maximum age, not that of the art." @default.
- W2280387503 created "2016-06-24" @default.
- W2280387503 creator A5048423038 @default.
- W2280387503 date "2013-01-30" @default.
- W2280387503 modified "2023-09-24" @default.
- W2280387503 title "Dating Rock Art: Two New Methods for Pictographs and Petroglyphs" @default.
- W2280387503 doi "https://doi.org/10.4000/palethnologie.4500" @default.
- W2280387503 hasPublicationYear "2013" @default.
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