Penn State - Obelisk of Stones - 5-28-08
Originally uploaded by mosley.brian
Penn State - Obelisk of Stones - 5-28-08
Penn State Obelisk
The obelisk consists of 281 blocks of building stone from 139 different localities, mostly in Pennsylvania, and its components are arranged to represent the geologic column of the rocks of Pennsylvania, with the oldest rocks at the bottom and the youngest at the top. These stones include pre-cambrian rocks, the oldest in the state, to the youngest triassic rocks which were formed during the age of the dinosaurs. The obelisk was built in 1897.
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