View Full Version : Bad Impact Events

2010-May-22, 03:09 AM
Australian scientists find Timor Sea meteorite crater (http://news.yahoo.com/s/afp/20100520/sc_afp/spacemeteoritesaustraliatimor)
Australian scientists have discovered a crater deep beneath the Timor Sea.....

Australian National University archaeologist Andrew Glikson said...
A meteorite 100 kilometres wide hit Siberia at the same time, along with an 85 km one in Chesapeake Bay, off the US coast of Virginia, followed by a large field of molten rock fragments over northeast America, he said.
ANU News gets it right (http://news.anu.edu.au/?p=2159):
“Round the same time as the Mount Ashmore impact, a 100 kilometre wide asteroid impact structure formed in Siberia, and another measuring 85 km in diameter in Chesapeake Bay, off Virginia, in the United States. Likewise a large field of tektites – molten rock fragments splashed by impact – fell over northeast America. This defined a major impact cluster across the planet,” he said.

The crater from a 100 km diameter impactor (http://janus.astro.umd.edu/astro/impact/) might measure 847.0 km across.

2010-Jul-22, 02:37 AM
I thought the object over Siberia exploded rather high in the atmosphere, rather than actually impacting with the earth. And wasn't it much smaller than 100 km in diameter. An object of this size striking the earth d would wipe out life over a major portion of Central Asia. No such event has been report in historical times.
Woops, I just realized the object in question struck 35,000,000 years BP. I was thinking of the object in Siberia early in the 20th century.