This was a tough book to get through. Think of it like working out a new muscle for the first time. Interesting, enlightening, expanded my understanding. But it needs an editorial review. Notwithstanding the glossary, which doesn't have ALL the words, the technical language suggest this is not a book meant for the general public, but is more of a textbook. Although there are parts that are in a more vernacular style, other parts feel like they were cribbed from an academic paper. Copiously illustrated, it is highly interesting and will make amateur geologists of many. Still, I feel like I want to make a surfer T shirt that says "Rheic Ocean" just to mess with people and flaunt my new knowledge.