Younger Dryas Caused by Impact?

[IanC]

Old Rocks- I thought you would like this link

UCSB Press Release: "Study Jointly Led by UCSB Researcher Finds New Evidence Supporting Theory of Extraterrestrial Impact "

Santa Barbara, Calif.) –– An 18-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has discovered melt-glass material in a thin layer of sedimentary rock in Pennsylvania, South Carolina, and Syria. According to the researchers, the material –– which dates back nearly 13,000 years –– was formed at temperatures of 1,700 to 2,200 degrees Celsius (3,100 to 3,600 degrees Fahrenheit), and is the result of a cosmic body impacting Earth.
These new data are the latest to strongly support the controversial Younger Dryas Boundary (YDB) hypothesis, which proposes that a cosmic impact occurred 12,900 years ago at the onset of an unusual cold climatic period called the Younger Dryas. This episode occurred at or close to the time of major extinction of the North American megafauna, including mammoths and giant ground sloths; and the disappearance of the prehistoric and widely distributed Clovis culture. The researchers' findings appear today in the Proceedings of the National Academy of Sciences.

cheers

 

[Old Rocks]

Thank you, Ian. That is very interesting. A Lucifer's Hammer scenerio at the beginning of our agricultural period. Wonder how far that set us back?

 

[westwall]

Indeed. Cold ALLWAYS seems to have a catastrophic effect on life of this planet.....unlike warmth.

 

[flacaltenn]

Thank you, Ian. That is very interesting. A Lucifer's Hammer scenerio at the beginning of our agricultural period. Wonder how far that set us back?

Well it delayed Al Gore's Internet thingy by about 2,000 yrs at least... Not a good day when our OldRocks are eating molten glass..