Most people do not think to observe geology from the sidewalks of a major city, but all David B.
Williams has to do is look at building stone in any urban center to find a range of rocks equal to any assembled by plate tectonics.
In Stories in Stone , he takes you on explorations to find 3.
5-billion-year-old rock that looks like swirled pink-and-black taffy, a gas station made of petrified wood, and a Florida fort that has withstood three hundred years of attacks and hurricanes, desp.