Late Pleostocene Human Population Bottlenecks. . . (Toba)

The Bradshaw Foundation ^ | 1998 | Stanley H. Ambrose

[blam]

Some place the worldwide human population after the Toba explosion as low as 2,000 people.

[blam]

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.

[Coyoteman]

More good stuff ===> Placemarker <===

[Darksheare]

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.

[djf]

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.

[naturalized]

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 perished—birds, 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.

[Luke Skyfreeper]

Incredible thesis.

[HamiltonJay]

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?

[Coyoteman]

Problems with a Global Flood, Second Edition, by Mark Isaak

[blam]

"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.

[blam]

"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.

[Sam Cree]

The above looks like a moderne style menorah. Very nice design.

Placemark, I look forward to reading this.

[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?

[Coyoteman]

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.

[Slicksadick]

From this site, lots of super caldera info. http://www.solcomhouse.com/yellowstone.htm

[add925]

Proud member of Haplogroup G2 :^)

[Darksheare]

Yes, but only up to a point.

[blam]

"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.

[Toadman]

ping for great discussion topic

[Darksheare]

Looking back into the program, it simulates only two types of caldera, Valles type, and Mazama type.