Saturday, August 23, 2008

23-08-2008 - Half the age of the Earth

APAD_20080823 (Half the age of the Earth)

The rocks making up the Sila Thoranam (rock arch) in the Rock Garden in Tirumala are approximately 2.5 billion years old, which is nearly (or more than, in fact) half the age of the Earth! The formation is only slightly younger, at 1.5 billion years old.

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