Boston Uncovered: Roxbury Puddingstone

[@fwmacdonald]

this is incorrect- conglomerate formed 500 million years ago glaciers 12000-20000 years.

[@Massangler1856]

Wow, so, so, so wrong. The difference between the actual age of 590 million years and your incorrect date of "the ice age" is only 590 million years, so the entire actual age of the formation.