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Pleistocene North African genomes link Near Eastern and sub-Saharan African human pop
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[QUOTE]Originally posted by Elmaestro: [QB] perplexing, We have transition and gradual development in the Nile regime. But to the west west we have skeletons & older dates however, spontaneous industries. TBH, I'm not aware of Microburine industries in the near east that isn't (or is older than) Mushabian. But I'm prompted to subscribe to at least one pulse migration OOA and to the Maghreb (at least to the Taforalt) during the Early M78 days being responsible for these "sudden" industries. [QUOTE][i]"There is a high degree of similarity with phase 2 in the core-reduction procedures and in the use of soft hammer percussion but a strong divergence can be seen in the method of retouching bladelet tools fromthose in the phases above. [b]There is no evidence of the microburin technique in the Lower Yellow Series.[/b] The distal ends of retouched bladelets are also rarely modified. Instead, the most common tool forms are obtuse-ended backed bladelets (Tixier’s type 67), with semi-abrupt or abrupt backing down one margin, and Ouchtata bladelets (Tixier’s type 70), which carry fine retouch down all or part of one edge (often the proximal portion). Pointed backed forms also occasionally occur (Fig. 5)." [..] "Turning to the Iberomaurusian, although the deposits at Taforalt represent a thick and fairly continuous record of human occupation, there are in fact subtle variations in the cultural sequence. [b]The clearest example is the switch from IB1 with marginally backed (‘Ouchtata’) blades and bladelets to IB2 dominated by microlithic backed bladelets. The actual transition between the two phases is marked by a sharp sedimentary contact between Units Y2/Y1.[/b] This is clearly an erosive boundary so it is impossible to know whether the time gap of 857 years (between [b]15,686 - 15,010 BP [/b]and [b]17,204 - 16,898 BP[/b] at 2s) in the radiocarbon model is more apparent than real."[/QUOTE]10.1016/j.jhevol.2013.06.003 [b]Note:[/b] Easy digest for the lay; Barton's 'series' are based on sedentary deposition, where Grey postdates Yellow. Grey spans from ~10.7-12.6Kya And includes IB3 lithic assemblies and yellow spans from ~12.2 - 30Kya and accommodates IB1 and IB2.[/i] [b]@Swenet[/b] [i](and anyone else with an opinion)[/i] What would the Maurasians closer to the 30Kya date look like to you [b]autosomally[/b]? [/QB][/QUOTE]
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