Cool.

I'm not an "ologist," just an interested amateur, quite hooked on geology and plate tectonics. If you want a real treat, read John McPhee's Annals of the Former World. It's a single-volume compilation of his three great geological explorations of North America (including my favorite, Assembling California).
McPhee is the single best nonfiction writer in America, in my opinion. In this trilogy, he weaves an incisive cultural geology through the physical geology, revealing deep connections between people and the unseen world underneath their feet. You start to appreciate how North American geology has influenced North American values and spirit. No one does it better...no one else even does it at all.