Post by firstname.lastname@example.org Post by Daud Deden
Ross, what was Rivet's migration theory you speak of? Wiki has no details, and my French skill is too limited to read his book.
All he says in the 1925 paper (the only one I can readily get hold of)
is that there were migrations "by way of the islands", first by Australians
and later by Melanesians/Polynesians. He (and others) believed in
the migrations on the basis of physical and cultural resemblances.
In this paper he presents what he considers linguistic evidence, comparing
the Chon languages (Patagonia, Tierra del Fuego) with Australian, and
the Hokan group (mainly North American) with Oceanic.
I'd be polite enough not to call Rivet a crank; he was an anthropologist,
highly esteemed by his French colleagues. But he had no more clue than
the average crank about what linguistic evidence is. He compares basketfuls
of languages on either side and finds (unsurprisingly) random similarities.
Others before and since have done the same.
Post by Daud Deden
I specified route, method & motive, all aligned with present evidence and logical speculation. No-one that I'm aware of has done that.
There might be something to it. New paper shows genetic anomaly in southern South America:
Whole genome sequence of Mapuche-Huilliche Native Americans
This article is quite technical as is indicated by the tone of the abstract.
In their Admixture analysis, Vidal et al. detected differences between the Huilliche genomes and those of other Native American populations:
"We ran ADMIXTURE from K = 1 to K = 15 models.....Notably, a large component of the AMR ancestry in PEL, MXL, CLM and PUR populations (dark gray) is not present in HUI genomes (average = 0.5%) and is marginally represented in Chilean Latino individuals (average = 6.9%, compared with 76.2% in PEL, 42.9% in MXL, 25.6% in CLM and 13.5% in PUR samples). These results suggest that HUI individuals and the broader Chilean cohort derive this genetic component from shared Native American ancestors with low genetic representation in other admixed American populations.
mtDNA sequences of the Southern Cone populations nearly all belong to haplogroups C & D. It is no surprise, then, that the mtDNA sequences of the Mapuche-Huilliche of this study also all belong to these two haplogroups, only:
"Analysis of mitochondrial DNA showed that all HUI individuals belong to the Native American haplogroups C and D, two of the major pan-continental founder haplogroups. The majority of genomes sequenced (7 out of 11) belong to the C1b haplogroup and 6 of them were assigned to the clade C1b13 (Additional file 1: Fig. S5a), which is a branch found mainly in the Southern Cone of South America between 38° and 42°S [15, 29]. While the other 4 individuals belong to the D haplogroup, 3 of them are in the D1g clade, which is found almost exclusively in the central-southern part of Chile and Argentina, and only one is in the D4h3a clade (Additional file 1: Fig. S5b), found mainly in the Southern Patagonia [15, 29]. These results are in agreement with the admixture data (K = 10, as described before) showing that the genetic component of the HUI cohort differs from the genetic component of other Native American populations living in the northern region of South America."