"The Sierra Nevada reached their present height 50 million years ago -- 30 million years earlier than geologists once believed, according to a new study. "
Interesting findings as they are still trying to deduce how migration into the great basin occurred. Read the entire article in the LA Times here: http://www.latimes.com/news/nationworld/nation/la-sci-mountains9-2010jan09,0,615361.story
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