9 PIC/AXFLINT"Paris Basin"Middle Paleolithic MOUSTERIAN

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flint blond white patina of the Paris Basin Middle Paleolithic. period of the Mousterian type of debitage Levallois method .SIZE 65/110 MM ref 191 100.000 TO 30.000 BC most of them are Middle Paleolithic. some are Upper Paleolithic and some of its objects are some early Neolithic , but the definition is difficult. because I was often asked the same question about the age I said it's actually quite easy, the patina is the result of an alteration of flint blond by particular component of the earth in this region. is an extremely long process. on some parts, it reaches 1 / 2 mm. it's a good way of dating but not infallible it depends on the burial environment. on flint dating back three or four thousand years is superficial alteration of tenth of a millimeter, but it is decreasing which mean it takes longer in the second tenth. you can see the example photo of a cut in slices and the patina over two millimeters.( not in sale )COMBINE SHIPPING /wiki/Moustérien http://www.google.fr/imgres?imgurl=/dp/images2/61894R14.jpg&imgrefurl=/dp/message-61894.htm&usg=__EVyQcb3KlQoUMVF7liFXFpMnsA4=&h=578&w=667&sz=28&hl=fr&start=74&sig2=-mJ_mnwNrmA5gtS0a5Dz3w&zoom=1&tbnid=mLq3Os-BLonPiM:&tbnh=120&tbnw=138&ei=HZTMTPyhDeWG4gaB75DdDA&prev=/images?q=HACHE BASSIN PARSIEN&start=60&um=1&hl=fr&safe=off&sa=N&gbv=1&rlz=1B3GGLL_fr___FR399&tbs=isch:1&um=1&itbs= read more