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Mammoths, sabre-tooths MURDERED by second giant space boulder
"First the dinos, then the mastodons ... then ..."
"A 16-strong team of international boffins have added more evidence for the controversial theory that a gigantic asteroid smashed into the Earth 12,900 years ago and wiped out a range of furry mammals, including the mammoths. The researchers found an ancient layer of thin, dark sediment buried at the bottom of Lake Cuitzeo in central Mexico that contains nano diamonds, impact spherules and other exotic materials that are only found after a cosmic impact." See: http://www.theregister.co.uk/2012/03...moth_asteroid/ |
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Mammoths, sabre-tooths MURDERED by second giant space boulder
On Mar 7, 11:12*am, wrote:
"First the dinos, then the mastodons ... then ..." "A 16-strong team of international boffins have added more evidence for the controversial theory that a gigantic asteroid smashed into the Earth 12,900 years ago and wiped out a range of furry mammals, including the mammoths. The researchers found an ancient layer of thin, dark sediment buried at the bottom of Lake Cuitzeo in central Mexico that contains nano diamonds, impact spherules and other exotic materials that are only found after a cosmic impact." See: http://www.theregister.co.uk/2012/03...moth_asteroid/ KIlled not murdered. Murder, I think suggests intent. The article is interesting so thanks for posting it. I wonder if there were multiple kill zones for this 'event.' Or perhaps I should about the kill zone size. I'd wonder if may have been a complex event. A grazing interaction of the planet with a rather large cometary body. Some hitting Mexico and the rest in a decaying orbit that then rains down over the coming months. I suppose we need to look at the climate proxies at the time for suggestions of an event. Sudden warming going to cold in the span of year? Perhaps ocean sediment would have a grand change in plankton organisms? musing out loud...................Trig |
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Mammoths, sabre-tooths MURDERED by second giant space boulder
On Mar 11, 9:36*am, |"
wrote: On Mar 7, 11:12*am, wrote: "First the dinos, then the mastodons ... then ..." "A 16-strong team of international boffins have added more evidence for the controversial theory that a gigantic asteroid smashed into the Earth 12,900 years ago and wiped out a range of furry mammals, including the mammoths. The researchers found an ancient layer of thin, dark sediment buried at the bottom of Lake Cuitzeo in central Mexico that contains nano diamonds, impact spherules and other exotic materials that are only found after a cosmic impact." See: http://www.theregister.co.uk/2012/03...moth_asteroid/ KIlled not murdered. Murder, I think suggests intent. The article is interesting so thanks for posting it. I wonder if there were multiple kill zones for this 'event.' Or perhaps I should about the kill zone size. I'd wonder if may have been a complex event. A grazing interaction of the planet with a rather large cometary body. Some hitting Mexico and the rest in a decaying orbit that then rains down over the coming months. I suppose we need to look at the climate proxies at the time for suggestions of an event. Sudden warming going to cold in the span of year? Perhaps ocean sediment would have a grand change in plankton organisms? musing out loud...................Trig Anyway the timing is suggestive on an event that falls at the close of the Pleistocene and extinctions were NOT confined to North American or Central American but seem rather more evenly spread. http://en.wikipedia.org/wiki/Quatern...tinction_event if I had a time machine, I could cause all sorts of trouble ;-) Then again maybe I do .........Trig |
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