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Late Pleostocene Human Population Bottlenecks. . . (Toba)
The Bradshaw Foundation ^
| 1998
| Stanley H. Ambrose
Posted on 12/16/2005 11:33:44 AM PST by blam
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Some place the worldwide human population after the Toba explosion as low as 2,000 people.
1
posted on
12/16/2005 11:33:46 AM PST
by
blam
To: SunkenCiv
GGG Ping.
I expect that we'll eventually find that humans were stranded in South America during the Volcano Winter caused by the Toba explosion and were not re-united with the world's other humans until thousands of years later.
2
posted on
12/16/2005 11:36:39 AM PST
by
blam
To: blam
More good stuff ===> Placemarker <===
3
posted on
12/16/2005 11:39:56 AM PST
by
Coyoteman
(I love the sound of beta decay in the morning!)
To: blam
I grabbed Kwares Erupt program.
Tried to simulate Toba.
To get the amount of volcanic gunk to erupt that Toba did, you have to simulate an eruption lasting over one year.
Toba erupted its load in less than that.
4
posted on
12/16/2005 11:40:02 AM PST
by
Darksheare
("Keep it just between us..." she said, and then she faded into the mist.)
To: blam
I have heard speculation that during the last third or so of the last great ice age, worldwide population fell to the 10-20K range.
I guess we're talking about 12-15 K years ago.
5
posted on
12/16/2005 11:41:36 AM PST
by
djf
(Bush wants to make Iraq like America. Solution: Send all illegal immigrants to Iraq!)
To: blam
20 The waters rose and covered the mountains to a depth of more than twenty feet. 21 Every living thing that moved on the earth perishedbirds, livestock, wild animals, all the creatures that swarm over the earth, and all mankind. 22 Everything on dry land that had the breath of life in its nostrils died. 23 Every living thing on the face of the earth was wiped out; men and animals and the creatures that move along the ground and the birds of the air were wiped from the earth. Only Noah was left, and those with him in the ark. Last I checked, ice was water.
6
posted on
12/16/2005 11:43:14 AM PST
by
naturalized
(Some folks look at me and see a certain swagger, which in Texas is called walking.)
To: blam
To: Darksheare
I seem to recall Toba was a Caldera.. like the one sitting under Yellowstone... does Kwares Erupt even have the capacity to simulate a Caldera eruption?
To: naturalized
9
posted on
12/16/2005 11:48:35 AM PST
by
Coyoteman
(I love the sound of beta decay in the morning!)
To: djf
"I guess we're talking about 12-15 K years ago."I think you're thinking of the Last Glacial Maximum(LGM), 18-23,000 years ago. That was an extremely cold period and this Journey Of Mankind shows an extreme shrinkage of humans worldwide during that period. I've not seen any population figures associated with that period though.
10
posted on
12/16/2005 11:52:56 AM PST
by
blam
To: HamiltonJay
"I seem to recall Toba was a Caldera.. like the one sitting under Yellowstone." Yes. Super Volcano status.
I've seen some discussion on up-grading the Thera eruption some...not to super volcano status though.
11
posted on
12/16/2005 11:55:16 AM PST
by
blam
To: blam
The above looks like a moderne style menorah. Very nice design.
Placemark, I look forward to reading this.
12
posted on
12/16/2005 11:59:00 AM PST
by
Sam Cree
(absolute reality) - "Reality is merely an illusion, albeit a very persistent one." Albert Einstein)
To: blam
i have a question for you...how does the author know that those lines on the rock are tally marks and not just the grooves left when someone sharpened a stick or arrow head on that rock?
13
posted on
12/16/2005 11:59:07 AM PST
by
willyd
(No nation has ever taxed its citizens into prosperity)
To: willyd
i have a question for you...how does the author know that those lines on the rock are tally marks and not just the grooves left when someone sharpened a stick or arrow head on that rock? Stones used for sharpening tend to have more, and deeper scratches, and they are generally more central. Sometimes they have a single deep "V"-shaped groove.
This stone matches the world-wide pattern you find with non-sharpening (i.e., ceremonial, counting, etc.) stones.
Check out a book title "Patterns that Connect: Social Symbolism in Ancient & Tribal Art" by Schuster and Carpenter for illustrations.
14
posted on
12/16/2005 12:05:12 PM PST
by
Coyoteman
(I love the sound of beta decay in the morning!)
To: blam
From this site, lots of super caldera info. http://www.solcomhouse.com/yellowstone.htm
15
posted on
12/16/2005 12:07:56 PM PST
by
Slicksadick
(Go out on a limb........Its where the fruit is.)
To: blam
Proud member of Haplogroup G2 :^)
16
posted on
12/16/2005 12:10:16 PM PST
by
add925
(The Left = Xenophobes in Denial)
To: HamiltonJay
Yes, but only up to a point.
17
posted on
12/16/2005 12:12:10 PM PST
by
Darksheare
("Keep it just between us..." she said, and then she faded into the mist.)
To: Coyoteman
"Stones used for sharpening tend to have more, and deeper scratches, and they are generally more central. Sometimes they have a single deep "V"-shaped groove." Whew! I was hoping you'd step forward and answer that one, lol.
18
posted on
12/16/2005 12:16:36 PM PST
by
blam
To: blam
ping for great discussion topic
19
posted on
12/16/2005 12:19:13 PM PST
by
Toadman
To: HamiltonJay
Looking back into the program, it simulates only two types of caldera, Valles type, and Mazama type.
20
posted on
12/16/2005 12:22:27 PM PST
by
Darksheare
("Keep it just between us..." she said, and then she faded into the mist.)
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