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FarCenter

(19,429 posts)
18. Interesting -- seems mostly Yellowstone, but older than 600,000 years.
Mon Nov 26, 2012, 10:53 AM
Nov 2012
http://academic.emporia.edu/aberjame/ice/lec17/lec17.htm

See Figure 17-1. We would appear to be due for another eruption of Yellowstone.
thanks! I want to watch this, especially now living Voice for Peace Nov 2012 #1
only 200 years ago the lands were pristine, covered with millions of grazing animals. Sunlei Nov 2012 #2
Bison, antelope, etc. were the original grazers-- Jackpine Radical Nov 2012 #4
Indeed. Without humans, the Plains would probably be oak savanna NickB79 Nov 2012 #7
I think the first masses of covered wagons cut down any groves of trees pretty fast Sunlei Nov 2012 #16
horses evolved for over 50 million years on north america and spread out from here. Sunlei Nov 2012 #11
Yes, of course. Jackpine Radical Nov 2012 #13
no not the forrest horses of 60,000 years ago Sunlei Nov 2012 #15
Horses were wiped out in N. America entirely 10,000 yr ago NickB79 Nov 2012 #19
I disagree with you, horses are a native species. Sunlei Nov 2012 #20
Huh? hobbit709 Nov 2012 #27
Not just grazing animals. slackmaster Nov 2012 #10
unlike buffalo and horses, tasty domestic cattle don't have upper teeth for grass "clipping" Sunlei Nov 2012 #21
I have mixed feelings about modern "wild" horses which are descended from European imports slackmaster Nov 2012 #25
Way to go hybridized wheat. geckosfeet Nov 2012 #3
But the tillage didn't cause the drought -- it just made the consequences worse locally FarCenter Nov 2012 #5
The sand hills of Nebraska, did a well drill and ~ 80ft down there is a 40 ft layer of volcanic ash Sunlei Nov 2012 #17
Interesting -- seems mostly Yellowstone, but older than 600,000 years. FarCenter Nov 2012 #18
hope that super volcano yellowstone stays quiet for 200,000 years or more Sunlei Nov 2012 #22
Why? It's completely improbable that civilisation will last 200,000 years. FarCenter Nov 2012 #23
In addition to being and excellent source of fibers and oils, hemp enriches the soil. Egalitarian Thug Nov 2012 #6
Hemp grown on an industrial basis isn't that great for soils NickB79 Nov 2012 #8
Fast growing, minimal water requirement, constant production of biomass during growth cycle, Egalitarian Thug Nov 2012 #9
dang, I still remember hfojvt Nov 2012 #12
Many of us do KamaAina Nov 2012 #24
Just saw the second half -- changes farming practices helped some, but ultimately it was rain FarCenter Nov 2012 #14
In 20 years the Ogallala Aquifer will be depleted (no more drinking water).... Little Star Nov 2012 #26
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