Rough-Hewn Land: A Geologic Journey from California to the Rocky Mountains

When it comes to books written about geology for a general audience there is only one definitive classic: Annals of the Former World by John McPhee. It's hard to imagine that anything could really improve upon the classic, but I think Rough-Hewn Land has in many ways added to McPhee's geological chronicle across the western portion of I-80 and is a worthy companion piece. For a complete history of the assembling of California to the exhumation of the Rockies you can't go wrong with either of these books, but there are a few key differences:The first key difference between Rough-Hewn Land and the Annals, is that Rough-Hewn Land has been written by a professional geologist, that is intimate with the geology of the western United States. McPhee uses his unique narrative style to essentially relate a very detailed interview/tour guide of a local expert. Medahl on the other hand is the expert, so his story is more coherent and complete. He also is better at relating how plate tectonics controls the dramatic landscapes of the American west. I was worried that Medahl's prose would be somewhat dry considering that he is a professor after all, but I was pleasantly surprised that his writing is not only very readable but it is also quite enjoyable. There was even a bit of humor in his writing, that is if you find geologist “humor” to be funny (Beer cans are used at one point to illustrate a concept). And if the geology bores the reader Medahl has included some asides into the regional histories like the California gold rush and why the geology of Utah doomed the Donner Party long before they got to the infamous pass named in their honor. However, it does lack the amateur enthusiasm of the McPhee's books. Medahl like most geologist is quite passionate about his subject, but it's not the kind of enthusiasm of a first discovery.Another major difference between the Annals and Rough-Hewn Land is that Medahl has peppered pictures and block diagrams to help illustrate the more complicated bits. Geology is a very visual sort of science and without a diagram or picture it's hard to visualize what the author is talking about. The Annals completely lacks diagrams of any kind, making it more difficult to truly understand what's going on for the uninitiated. This is a big plus in favor for Rough-Hewn Land. Another huge factor in favor for Rough-Hewn Land is an appendix that list many of the outcrops complete with GPS coordinates that Medahl visited when putting this book together. So it's possible to construct a field trip along I-80 to get a first hand look at the geology.Plate tectonics also plays a much bigger part in Rough-Hewn Land. This isn't necessarily a fault of the Annals so much as it is a matter of time. Since Annals has been written our understanding of the plate tectonics and the fault systems of the American west has increased exponentially. Medahl using a modern evidence goes so far as to say that the San Andreas may not be the western most edge of the North American Plate. Instead he proposes that the actual edge of the North American Plate is further inland near the Sierra Mountain range and that there is a smaller plate called the Sierran Plate which should be considered a separate plate from the North American Plate. A very intriguing hypothesis to say the least and the evidence for Medahl's argument is compelling. In this respect Rough-Hewn Land is a welcomed update to the Annals.Lastly another key difference is the direction of the traverse across the western portion of the United States. Rough-Hewn Land starts on the west coast and finishes in the plains where McPhee chooses to go in the opposite direction. From my point of view this is the proper direction to tell a complete history of the west. It makes more sense to go from the younger events and work our ways backwards in time rather than going from the old to the new. This is not an intuitive notion for sure, but it just makes more sense when you are trying to put it altogether.Rough-Hewn Land is a proper geology book, not just an update to the Annals of the Former World. I'm now adding a book to a very short list of geology books to recommend to a newly minted enthusiast. It's as enjoyable as it is informative, easy to read and understand, full of pictures and diagrams, and GPS points to get out into the field. Brilliant!

Put bluntly: This is a first rate didactic master piece. Only someone with a truly deep and broad understanding of his field can write like this. It is indeed a rare occasion that a science book is so captivating that one can’t put it down! It’s a must read for anyone living west of the Rocky Mountains. It will leave you rattled when it begins to dawn on you what goes on underneath your feet, the colossal forces, almost endless time scales, and the rather unique combination of geological events that shaped the western part of the US. Pacific Oceanic floor on the western slopes of the Sierras? Eruptions that make Mt. St. Helens look puny? A mountain range jumping some 12 feet in a few seconds? Just be glad you weren’t anywhere near when it happened, in California, and some of it not so long ago.Even though it is written for folks with no geology background, the author always explains why the things happen that he describes, what the evidence is for the conclusions he draws, and even where expert opinions still differ. Why was there gold in the western Sierras, why is the Central Valley this huge flat expanse, why is there a San Andreas fault, why do Basin and Range, Owen’s Valley and the Rocky Mountains even exist – the list goes on.In addition to many photos and maps, the book contains thoughtfully composed sketches that are very insightful, and an appendix that describes where precisely one can find the places shown in photographs (longitude and latitude to put into e.g. Google Maps).I’m a retired physicist and I read a lot, but this is one of the best books I have read in the last ten years! My advice to anyone interested in CA geology is: This is the first book to read - five stars, hands down.Prof. Meldahl, my hat off to you, and I thank you for a fantastic read.

A thrilling read!I sipped one section at a time and delved into places present in each section.I did learn new places along his journey and their geologic importance.It took me from the West Coast (San Francisco) along I-80 through Sierra Nevada.He didn't just tell a story of geology but also history.I learned interesting history of Gold Rush and how it affected the area geologically.His intertwining of the two subjects makes the book so impressive.Across Basin and Range, he discussed a story of early expeditionssearching for the easy water way (Buenaventura River) from east to Pacific Oceanbut getting disappointed when learning that no river crosses Sierra Nevada.The section "where rivers die" sounds very romantic and well-apted.I didn't think there were much interesting in Basin and Range.It was him who changed my view to this area. Well done, Keith!He keeps doing his great job when it comes to the Rocky Mountain (my favorite mountain range)Here I learned a lot about Wyoming, of which what I knew earlier is just Grand Teton and Yellowstone.Cheyenne and Laramie are very geologically interesting.His narration has changed my perspective when I'm looking at US maps.This book also inspired my trip last fall (2016) to Northern Sierra (Lake Tahoe, Carson City, Reno)as well as Lassen, Mount Shasta, Crater Lake.Along with reading, I kept searching on Wikipedia, Google Maps, Google Earth,so I was so immersed reading the book.After traveling the above trip, I got back to the book and feel even more related.So much from this book has lived in me.His excellent writing style not only inspires but also teaches me geology.Reading his book makes me feel like I'm traveling not just in place but in time as well.I couldn't love geology more and will keep an eye on his new book as well askeep searching for another geology books to pacify my curiosity in the subjects.Great job, Keith!I hope I can meet you in person or attend your lecture to learn more of interesting stuff in geology!I have no hesitant to declare myself "I'm a big fan of you!"Wait for your new book!

Ever since reading Meldahl's "Hard Road West,", which I consider to be one of the finest stories of western bound pioneers and the landscape they had to confront to make it to the promised lands of Oregon and California, I've been tempted by this sort-of follow up. But I was concerned. Afterall, Meldahl covers this same area in Hard Road West--would it be too much like reading a bad sequel? Or even repetitive? But after several years I finally caved in and it was worth it. Yes, the author deals with plate tectonics and the volcanic forces shaping the lands west of the Mississippi, but Rough Hewn Land looks much more closely at the American West Coast and inland to the Rockies, offering a more detailed insight into geological forces at work along with a deeper timeline. He also offers fascinating "potted histories" of the formation of the Atlantic and Pacific oceans with measurements of how much they are changing today. There is some history here as well, particularly about the 1849 Gold Rush and the famous Comstock Lode, but this is less a tale of the people walking the surface than it is what lies miles beneath them, and is enlivened by Meldahl's light hearted anecdotes about his own explorations of the region. Most importantly, like Hard Road West, this is a book of solid geological science, but easily told in a language accessible to any lay reader. If you are even remotely interested in the natural history of the USA, this book is for you.