The Single Biggest Problem With the Younger Dryas Impact Hypothesis: Uniformitarian Impact Craters, Part Cinq

Guest commentary by David Middleton YDIH = Younger Dryas Impact Hypothesis YDB = Younger Dryas Boundary Last month I shot a big hole in the latest YDIH paper.  This Science News article shoots another big hole in it.  The irony is that both of these particular holes were preexisting conditions: The contradictory data were either…

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A bad day for Younger Dryas comet impact climate theory

Studies refute hypothesis on what caused abrupt climate change thousands of years ago Two new studies in the Journal of Quaternary Science refute the hypothesis that one or more comets/bolides struck North America approximately 12,900 years ago triggering rapid climate change and the start of the Younger Dryas period. Prior to the Younger Dryas, the…

Younger Dryas cooling event said to be comet related

From the University of California – Santa Barbara: A cataclysmic event of a certain age Geologist James Kennett and an international team narrow the date of an anomalous cooling event most likely triggered by a cosmic impact At the end of the Pleistocene period, approximately 12,800 years ago­ — give or take a few centuries…

Where Lies the Younger Dryas Smoking Gun?

Guest Post by Dan Johnston I have been following the proposed collision theory for the onset of the Younger Dryas for a number of years with considerable interest as it explains so much in a relatively straightforward fashion, if true. The academic response to the hypothesis has been, predictably, harsh and unforgiving with accusations flying…

Widespread evidence of cosmic impact documented – likely cause of the Younger Dryas cool climate episode

From the University of California – Santa Barbara some paleoclimatology without the need to see hockey sticks. Comprehensive analysis of impact spherules supports theory of cosmic impact 12,800 years ago (Santa Barbara, California) –– About 12,800 years ago when the Earth was warming and emerging from the last ice age, a dramatic and anomalous event…