Someone please refresh my memory -- about how long ago was the theorized
impact that tore loose the Moon from the proto-Earth? This sounds like it
happened after the Moon had coalesced enough to be a single solid.
Tracy Latimer
From: Ron Baalke <[EMAIL PROTECTED]>
To: [email protected] (Meteorite Mailing List)
Subject: [meteorite-list] Earth's Surface Transformed by Three
MassiveAsteroid Impacts 3.2 Billion Years Ago
Date: Fri, 5 Aug 2005 11:47:36 -0700 (PDT)
http://info.anu.edu.au/mac/Media/Media_Releases/_2005/_August/_050805glikson.asp
Earth's surface transformed by massive asteroids
Australian National University media release
August 5, 2005
A cluster of at least three asteroids between 20 and 50 kilometres
across colliding with Earth over 3.2 billion years ago caused a massive
change in the structure and composition of the earth's surface,
according to new research by ANU earth scientists.
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