Re: [Precolumbian_Inscriptions] dating patina
- dating the patination of an exhibithttp://184.108.40.206/search/cache?p=dating+patina&ei=UTF-8&url=n8Amw-yRb2EJ:cs.nmhu.edu/Macs/StudentWork/Molly/dating.htmlhttp://220.127.116.11/search/cache?p=dating+patina&ei=UTF-8&url=5RbSp3QrKocJ:mc2.vicnet.net.au/home/date/shared_files/dating1980.pdfhttp://18.104.22.168/search/cache?p=dating+patina&ei=UTF-8&url=h4Yh-FXOW9IJ:laputan.blogspot.com/2003_03_30_laputan_archive.htmlthis presents a good overview of patina dating. there seems to be at least five types of patina. im more familiar with that called desert varnish, which is attributed to exposure to arid conditions with intense sunlight upon the object.at best all current methods only yield a relative date. like with pokotia's monoliths, we can say that the writing scratched into the patina was done at a date long after the objects were created.we need to identify the type of stone the pokotia monokiths were carved from. then identify the type of patina that exists on the stone. also important is the environments the carvings have been exposed to since created. were they entirely buried for unknown ages? its likely they were submerged in seawater for an unknown length of time.it seems certain, that if the layer of coloring on the monoliths is patina, as it appears to be, then we can conclude that the writing was made long after the statues were created.after this study i don't see much accurate dating emerging from the use of lasers and uv light. there are too many variables to consider. the best we can hope for is relative dating in respect to other objects nearby, or in association with the patina, or etching done upon it.mike----- Original Message -----From: mike whiteSent: Thursday, July 31, 2003 11:35 PMSubject: [Precolumbian_Inscriptions] pokotiaplz examine carefully the monolithic statues at pokotia. unless im mistaken the monoliths are so old that they are covered by a very thick patina. the old world script that is written on them, perhaps before 3,000 bce, is scratched into this patina. in the 5,000 years since the graffiti was added it still looks bright and fresh. you dont have to be a brain surgeon to come to some conclusions as to the great antiquity of the monolith. does anyone else see this?btw, i added a poll so that bernardo and pam the treasurer can contact those who are willing to contribute to this excavation. only a little money is needed to pay the laborers who dig, and to contruct a simple structure nearby to protect and display the relics to tourists. this will add some income to these poor aymara natives, and add to their self respect, by sharing what their ancestors created.
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