Regional Geology
Non-Technical:
A Sea Without Fish: Life in the Ordovician Sea of the Cincinnati Region (by David L. Meyer and Richard Arnold Davis)
Ancient Landscapes of the Colorado Plateau (by Ron Blakey)
Annals of the Former World (by John McPhee) (5 books in 1) Pulitzer Prize Winner
Bretz's Flood: The Remarkable Story of a Rebel Geologist and the World's Greatest Flood (by John Soennichsen)
California Rivers and Streams: The Conflict Between Fluvial Process and Land Use (by Jeffery F. Mount)
Canada Rocks: The Geologic Journey (by Nick Eyles and Andrew Maiall)
Cascadia's Fault: The Coming Earthquake and Tsunami That Could Devastate North America (by Jerry Thompson)
Colliding Continents: A Geological Exploration of the Himalaya, Karakoram, and Tibet (by Mike Searle)
Devil in the Mountain: A Search for the Origin of the Andes (by Simon Lamb)
Disaster Deferred: A New View of Earthquake Hazards in the New Madrid Seismic Zone (by Seth Stein)
Earthquake Storms: The Fascinating History and Volatile Future of the San Andreas Fault (by John Dvorak)
Exploration of the Colorado River and Its Canyons (by John Wesley Powell)
Geologists' Association Guide series (United Kingdom) (various authors)
Geology of the American Southwest: A Journey Through Two Billion Years of Plate-Tectonic History (by W. Scott Baldridge)
Geology of the Ice Age National Scenic Trail (by David M. Mickelson, Louis J. Maher Jr., and Susan L. Simpson)
Geology of the Lake Superior Region (by Gene L. LaBerge)
Geology of the North Cascades: A Mountain Mosaic (by Rowland Tabor and Ralph Haugerud)
Geology of the Sierra Nevada (California Natural History Guides) (by Mary Hill)
Minnesota's Geology (by Richard Ojakangas and Charles L. Matsch)
Noah's Flood: The New Scientific Discoveries About the Event That Changed History (by William Ryan and Walter Pittman)
Roadside Bedrock and Mining Geology of the Upper Peninsula Michigan, United States (by Elisa J. Piispa and Steven D. J. Baumann)
Roadside Geology/Geology Underfoot (United States) series (by various authors)
The Geology of Britain (by Peter Toghill)
The Hidden Landscape: A Journey into the Geological Past (by Richard Fortey)
The Story of Earth and Life: A Southern African Perspective on a 4.6-Billion-Year Journey (by Bruce Rubidge and Terence McCarthy)

History of Industry and Geologic Science
A History of Geology (by Gabriel Gohau)
Bretz's Flood: The Remarkable Story of a Rebel Geologist and the World's Greatest Flood (by John Soennichsen)
Coal: A Human History (by Barbara Freese)
Disaster Deferred: A New View of Earthquake Hazards in the New Madrid Seismic Zone (by Seth Stein)
Earth's Deep History: How It Was Discovered and Why It Matters (by Martin J. S. Rudwick)
Great Geological Controversies (by A. Hallam)
Mapping the Deep: The Extraordinary Story of Ocean Science (by Robert Kunzig)
Mind Over Magma: The Story of Igneous Petrology (by Davis A. Young)
Night Comes to the Cretaceous: Dinosaur Extinction and the Transformation of Modern Geology (by James Lawrence Powell)
Noah's Flood: The New Scientific Discoveries About the Event That Changed History (by William Ryan and Walter Pittman)
Soundings: The Story of the Remarkable Woman Who Mapped the Ocean Floor (by Hali Felt)
T-Rex and the Crater of Doom (by Walter Alvarez)
The Behavior of the Earth: Continental and Seafloor Mobility (by Claude Allegre)
The Disappearing Spoon: And Other True Tales of Madness, Love, and the History of the World from the Periodic Table of the Elements (by Sam Kean)
The Dragon Seekers: How an Extraordinary Circle of Fossilists Discovered the Dinosaurs and Paved the Way for Darwin (by Chris McGowan)
The Last Giant of Beringia: The Mystery of the Bering Land Bridge (by Dan O'Neill)
The Ocean of Truth: A Personal History of Global Tectonics (by Henry William Menard)
The Map That Changed the World: William Smith and the Birth of Modern Geology (by Simon Winchester)
The Prize: The Epic Quest for Oil, Money & Power (by Daniel Yergin) Pulitzer Prize Winner
The Rejection of Continental Drift: Theory and Method in American Earth Science (by Naomi Oreskes)
The Science of Liberty: Democracy, Reason, and the Laws of Nature (by Timothy Ferris)
The Seashell on the Mountaintop: A Story of Science Sainthood and the Humble Genius Who Discovered a New History of the Earth (by Alan Cutler)
The Seven Sisters: The Great Oil Companies & the World They Shaped (by Anthony Sampson)
Time and Clocks: A Description of Ancient and Modern Methods of Measuring Time (by Sir Henry Hardinge Cunynghame)
Time's Arrow, Time's Cycle: Myth and Metaphor in the Discovery of Geological Time (by Stephen Jay Gould)
Vanished Ocean: How Tethys Reshaped the World (by Dorrik Stow)
Volcano Cowboys: The Rocky Evolution of a Dangerous Science (by Dick Thompson)

Volcanoes
Non-Technical:
Eruptions that Shook the World (by Clive Oppenheimer)
In the Path of Destruction: Eyewitness Chronicles of Mount St. Helens (by Richard Waitt)
Introducing Volcanology: A Guide to Hot Rocks (by Dougal Jerram)
Krakatoa: The Day the World Exploded: August 27, 1883 (by Simon Winchester)
Volcano Cowboys: The Rocky Evolution of a Dangerous Science (by Dick Thompson)

Earthquakes
Non-Technical:
A Crack in the Edge of the World: America and the Great California Earthquake of 1906 (by Simon Winchester)
Cascadia's Fault: The Coming Earthquake and Tsunami That Could Devastate North America (by Jerry Thompson)
Disaster Deferred: A New View of Earthquake Hazards in the New Madrid Seismic Zone (by Seth Stein)
Earthquake Storms: The Fascinating History and Volatile Future of the San Andreas Fault (by John Dvorak)
The Orphan Tsunami of 1700 (by Brian Atwater, Satoko Musumi-Rokkaku, Kenji Satake, Yoshinobu Tsuji, Kazue Ueda, and David K. Yamaguchi) Free PDF