Geology is the perfect pocket-sized, folding guide for the nature enthusiast. The guide simply explains geological processes, the differences between rocks, minerals and gemstones, the most common types North American rocks and minerals and the best rockhounding locations. It also reviews the most common North American fossils and the tools an amateur geologist should take into the field in order to positively identify different types of rocks and minerals. Created and printed in the USA, this guide was updated in 2012 with a new cover design and updated information. Laminated for durability, this handy guide is a great source of portable information and ideal for field use by novices and experts alike.