Geologists studying deposits of volcanic glass in the western United States have found that the central Sierra Nevada largely attained its present elevation 12 million years ago, roughly 8 or 9 million years earlier than commonly thought.
http://www.sciencedaily.com/releases/2008/04/080423153318.htm
The Moon is Waning Crescent (20% of Full)
Sierra Nevada Rose To Current Height Earlier Than Thought, Say Geologists
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April 27, 2008 10:28AM |
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