What do you think?
Rate this book


447 pages, Kindle Edition
First published November 1, 2007
Imagine lying on your back underneath a trailer home holding a sawed-off shotgun, pointing up. As the trailing rolls away, you squeeze off a series of shots. Someone inside the trailer sees the floor-boards explode in a line of holes from one end to the other. The trailer is the North American Plate, the floorboard holes are the line of Snake River Plate-to-Yellowstone calderas, and the stationary shotgun represents a mantle plume – a column of incandescent rock rising up through the mantle. As the North American Plate slides along, the mantle plume beneath it periodically uncorks a caldera-forming eruption.There are also helpful illustrations and photographs throughout the book to understand the concepts, including the one immediately previous. The only problem I had with the concept illustrated by this quote was: as soon as I finished patting myself on the back for understanding it, I learned that the theory encased therein (long accepted as true) has recently experienced some sawed-off-shotgun-blast-sized holes itself, and the author himself is skeptical – “When a theory fails to yield evidence of its most basic predictions, you have to wonder whether it's time to file for divorce.” Then I had to try to understand possible alternative explanations. I said silently: You brought this on yourself.