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The 300/200BC event

26 October 2010

We now have the 300/200BC event (see www.livescience.com/environment/asteroid-impact-possibly-caused-prehistoric-tsunami/ … Dallas Abbot, a geologist based at Columbia University in New York, says an asteroid 183m wide crashed off the coast of New Jersey and sent a tsunami surging across what is now New York city over 2000 years ago. Sediment cores from the mouth of the Hudson River display evidence of a tsunami event, it is claimed, with shocked minerals and microscopic carbon beads loaded with nano-diamonds within them. There is in fact an offshore crater – 90 miles from New Jersey.

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