The excavation at Bull Creek, Oklahoma, shows the paleosol — ancient buried soil; the dark black layer in the side of the cliff — that formed during the Younger Dryas. – UCSB
More recently, another group of earth scientists, including UCSB’s Alexander Simms and alumna Hanna Alexander, re-examined […]
Earlier GSA abstract
Co-author spotlight: Andrew S. Madden
Carter, Simms, Benamara….
PNAS Lexus lane? 46,000 hits!
In 2007, scientists proposed that the start of the Younger Dryas (YD) chronozone (10,900 radiocarbon years ago) and late Pleistocene extinctions resulted from the explosion of a comet in the […]
A comet collided with the Earth’s atmosphere from the Constellation of Orion on 17 Jan AD 773 with coma stretched across the whole sky and disappeared within one day with ‘dust rain’ in the daytime.
— Old Tang Dynasty Book
January 21st, 2014 | Category: Uncategorized |
At home with Han
The Tusk has no greater admiration than our’s for Han Kloosterman. The Dutch geologist is a truly indefatigable prospector for the truth.
Han has had some recent success in his decades long effort to describe the unique nature of his local expression of the Younger Dryas Boundary, his beloved Usselo […]