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But Still Clinging to the "Land Bridge"

Posted: Thu Jul 12, 2012 9:29 am
by Minimalist
http://www.sciencedaily.com/releases/20 ... 134710.htm
ScienceDaily (July 11, 2012) — Scientists have found that Native American populations -- from Canada to the southern tip of Chile -- arose from at least three migrations, with the majority descended entirely from a single group of First American migrants that crossed over through Beringia, a land bridge between Asia and America that existed during the ice ages, more than 15,000 years ago.

Re: But Still Clinging to the "Land Bridge"

Posted: Thu Jul 12, 2012 6:30 pm
by kbs2244
"to the southern tip of Chile "
?????

Re: But Still Clinging to the "Land Bridge"

Posted: Thu Jul 12, 2012 8:04 pm
by Minimalist
Damn long walk, ain't it?

Re: But Still Clinging to the "Land Bridge"

Posted: Thu Jul 12, 2012 9:24 pm
by hardaker
THIS JUST IN:

The Clovis First Theory is put to rest at Paisley Caves

http://www.eurekalert.org/pub_releases/ ... 071112.php
While I tend to believe Clovis First was killed off forty years ago, it has stayed alive as an unkillable zombie theory, the worst kind. But the anal retentive Clovis Firsties have apparently lost their colonic battle, and proven wrong by human do-do.
Happy days.

Re: But Still Clinging to the "Land Bridge"

Posted: Fri Jul 13, 2012 9:16 am
by kbs2244

Re: But Still Clinging to the "Land Bridge"

Posted: Fri Jul 13, 2012 3:45 pm
by hardaker
hotdamn! thanks. missed that one.

Re: But Still Clinging to the "Land Bridge"

Posted: Sat Jul 14, 2012 9:27 am
by hardaker
Great video. Stanford did a fantastic job.

Re: But Still Clinging to the "Land Bridge"

Posted: Mon Jul 16, 2012 11:12 am
by Minimalist
He makes a compelling case. Check out the "Grumble" thread I just started. 14,000 year old pre-Clovis points in Oregon....and then they tell us nothing about the points!

Argh.

Re: But Still Clinging to the "Land Bridge"

Posted: Thu Jul 19, 2012 8:20 pm
by countrcultur
This is from a recent related study. Trying to get a hold of the whole study.

"It is now widely agreed that the Native American founders originated from a Beringian source population ∼15–18 thousand years ago (kya) and rapidly populated all of the New World, probably mainly following the Pacific coastal route. However, details about the migration into the Americas and the routes pursued on the continent still remain unresolved, despite numerous genetic, archaeological, and linguistic investigations. To examine the pioneering peopling phase of the South American continent, we screened literature and mtDNA databases and identified two novel mitochondrial DNA (mtDNA) clades, here named D1g and D1j, within the pan-American haplogroup D1. They both show overall rare occurrences but local high frequencies, and are essentially restricted to populations from the Southern Cone of South America (Chile and Argentina). We selected and completely sequenced 43 D1g and D1j mtDNA genomes applying highest quality standards. Molecular and phylogeographic analyses revealed extensive variation within each of the two clades and possibly distinct dispersal patterns. Their age estimates agree with the dating of the earliest archaeological sites in South America and indicate that the Paleo-Indian spread along the entire longitude of the American double continent might have taken even <2000 yr. This study confirms that major sampling and sequencing efforts are mandatory for uncovering all of the most basal variation in the Native American mtDNA haplogroups and for clarification of Paleo-Indian migrations, by targeting, if possible, both the general mixed population of national states and autochthonous Native American groups, especially in South America."

Re: But Still Clinging to the "Land Bridge"

Posted: Sun Jul 22, 2012 6:04 pm
by uniface
It's funny, the way that the newest "discoveries" that get published always essentially buttress the most entrenched beliefs.

Re: But Still Clinging to the "Land Bridge"

Posted: Tue Jul 31, 2012 7:24 am
by Farpoint
Greetings,

This being my first post, I will simply espouse that this subject is my personal area of great interest. Through the years I have accumulated a fair number of volumes relating to the Peopling of the Americas plus a collection of papers going back to the thirties. I am a member of CSFA, GSA, and the AGU.

I have read Across Atlantic Ice and find Stanford and Bradley's theory very intriguing, but they admit that they do not have a "smoking gun". What I feel is needed is an in situ human skeleton in a well stratified, datable geologic context of an appropriate time period with sundadonty teeth; an associated lithic would be nice too.

The Cinmar find is also fascinating.

Re: But Still Clinging to the "Land Bridge"

Posted: Tue Jul 31, 2012 10:57 am
by circumspice
Farpoint wrote:Greetings,

This being my first post, I will simply espouse that this subject is my personal area of great interest. Through the years I have accumulated a fair number of volumes relating to the Peopling of the Americas plus a collection of papers going back to the thirties. I am a member of CSFA, GSA, and the AGU.

I have read Across Atlantic Ice and find Stanford and Bradley's theory very intriguing, but they admit that they do not have a "smoking gun". What I feel is needed is an in situ human skeleton in a well stratified, datable geologic context of an appropriate time period with sundadonty teeth; an associated lithic would be nice too.

The Cinmar find is also fascinating.
Welcome to Archaeologica Farpoint!

Re: But Still Clinging to the "Land Bridge"

Posted: Tue Jul 31, 2012 11:35 am
by Minimalist
Greetings, Farpoint....

You remind of that song by the Rolling Stones.... "You Can't Always Get What You Want." Still, it is good to have a goal and perhaps someday you will be rewarded.

Re: But Still Clinging to the "Land Bridge"

Posted: Tue Jul 31, 2012 1:19 pm
by Farpoint
Thank you

Let's fire this thing up.

Paisley cave

La Sena (Holen)

Cactus Hill

Topper

Page-Ladson

Meadowcroft

Monte Verde

?BOATS?

?Ice Free Corridor?

Adovasio

Firestone

E. J. Dixon

Stanford

Meltzer

Holliday

Lepper

Tankersley

Grayson

Collins

M. R. Waters

And any other site or researcher.

Let's Roll

Re: But Still Clinging to the "Land Bridge"

Posted: Tue Jul 31, 2012 1:52 pm
by Farpoint
Let's throw one more thing into the mix for the time period under discussion:

A 190‰ drop in atmosphere's Δ14C during the “Mystery Interval” (17.5 to 14.5 kyr)

By Wallace Broecker et. al.

The radio carbon "plateau" issue