"does the following smehce make sense?"Nobody knows the exact prehistorical phylogeny of Basques/Gascons, although it does make sense to me that Gascons ("Aquitanians") are more diverse because all flows except Neolithic ones (i.e. all Paleolithic flows) arrived from there. So, unless you want to beat the dead horse of Neolithic origin, Gascony and the Northern Basque Country should be more diverse and old, all the rest being equal. The rest of the structure may actually be an effect of Neolithic/Celtic admixture advancing by the banks of the Ebro river. The dates naturally make no sense to me: there are archaeological sites which are continuous, layer on layer, from Gravettian to the Iron Age. But the structure may make sense if you accept that "foreign" Mediterranean-Neolithic and, to lesser extent, later Celtic inflows have expanded the genetic diversity of Ebro Valley peoples. This admixture may also have affected Gascons but the areas surveyed are close enough to the Basque core zone to have probably remained quite unmixed. ...Besides, it is interesting that:1. R1b: confirmed that 2/3 relevant basal lineages of the South Clade (P312), plus large numbers of P312* (still unresolved) are very dominant. The third (the "Celtic" or rather Sub-Alpine clade, U152) is also present and rather widespread (subclade L2 specially), although not too numerous. The "Irish" clade L21 is instead quite numerous (>5% everywhere except CAN, BUR and NAR, >20% in Lapurdi, Roncal,Gipuzkoa, Araba...) and also widespread.2. The possibly Neolithic lineages >5% are specially I2a1a (almost everywhere) and J2a (Navarre, Rioja and Burgos). Also T only in Cantabria and E-V65 in Araba. That's it. Previous reports of high E in Cantabria and Valle del Pas (near Biscay) are not confirmed here.3. NW I is also found: I2b in Bigorre and Dax, I1 in Araba (always so special!)(I'm still unable to subscribe to email feedback for comments).

I'm a little late with coemnntimg on this, but it's really striking how the three main Basque haplogroups, i.e.: R1b-P312, R1b-L21 and R1b-M153 get more frequent as we move from the general research area to the most Basque regions.Together they make up,- in the whole area, which may or may not have been Basque in previous times: 67,3%- in the mixed areas: 74%- in the Basque core areas: 85%This is completely the opposite of what we would expect if R1b-S116 introgressed from surrounding IEs into Basques! It's strong evidence for the idea that it has originally been a Basque haplogroup, not Celtic, leave alone Italo-Celtic, as some have suggested. Actually Italic seems rather associated with J2a, in fact, despite its undeniable similarity with Celtic.Furthermore, there's also the curious fact that the "British" R1b-L21 gets more frequent towards the Basque core area, where it reaches an astounding incidence of 19,1%.Conversely, there's a subvariant of the Basque/Gascon/Catalan (i.e. Basque + Iberian) R1b-Z196, namely L165/S28 found at appreciable frequencies in Scotland. This taken together is strong evidence for intimate contacts and exchange between Britain and the Basque country at some time in the past. And YET there are only very few Celtic loanwords in Basque. This indicates to me that the Britons were not yet Celtic speaking back then.