
Originally Posted by
alan
I would add that it is interesting that Maykop (zone all M269 and M73 today) was quite separate and very distinct from Kura-Araxes but they both appear overlap , albeit at different time, in NW Iran with the Maykop connection perhaps 4000-3400BC with that area being replaced with a Kura-Araxes period in the same area shortly after. Its and perhaps the extreme east end of the Caucasus are the only common denometor where both cultures were in the same zone. However, V88 is clearly something that has arised from a very distance P25 cousin of the P297 clades and they may have been separated since the late upper Palaeolithic. Presumably P25 was pretty much all there was before 10000BC. Based on archaeological considerations I see a potential divide in P25 occuring around 9 or 10000BC when what would have remained in P297* which is dated to this very moment and remaining P25*. That timewise corresponds very well to the opening up of the Caucasus-west side of Caspian north-south route and the appearance of epipalaeolithic groups around the south Caspian for the first time. This is also in the same ballpark as the younger dryas cold snap. A lot seems to fit some sort of geographical division in R1b starting at this time. Unfortunately not a lot of P25* survives and apparently no P297* which although annoying does fit into a sparsely populated epipalaeolithic scenario. We have nothing of substance for any of these lines until after 5000BC when we suddenly see M73, M269 and V88 appear. As I have posted many times before, I think that is a strong indicator that none of them was in the early farming zone of 9000-5000BC and makes the likeliest zone of their existance the steppe/north Caucasus and Northern Iran. I supect from the distributions of M73 and V88 that R1b had by then split into a northern P297 grop in the former areas and P25* in somewhere like northern Iran or the SE Causcasus. That geographical split, which would seem to me to have to have occurred between 10000BC and 5000BC would be the basis of the contrast between M73 and V88. The former remaining in the steppe and the later being incorporated into the northern fringes of the later farming world c. 5000bc and spread by Kura-Araxes as far as the Levant from c. 3500bc.