Last Updated: Mar 13, 2024     Views: 47

On the east and west side of the Main Library, limestone was used for its base building material. All sedimentary rock is fossiliferous, commonly known as limestone.  A magnifying glass will help with seeing the fossils. Usually, small shells can be seen if you look closely. On the west side, about fifty feet down is a “rust stain” where iron pyrite was deposited in the sediment.  The brown stain is where the iron has rusted. 
 

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