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5 of 5 people found the following review helpful:
5.0 out of 5 stars
The layperson's guide to understanding glaciers, October 21, 1998
By A Customer
This review is from: Glaciers of California: Modern Glaciers, Ice Age Glaciers, the Origin of Yosemite Valley, and a Glacier Tour in the Sierra Nevada (California Natural History Guides) (Hardcover)
Bill Guyton, professor emeritus of geosciences at Cal State Chico, has written an excellent book designed to teach people with little knowledge of geology about the glaciers of California. The book discusses glaciers and ice ages in general, discovery of glaciers in California, glacial chronology, and techniques used to determine ages of glaciations; then goes on to describe ice-age and modern glaciers throughout California. As a bonus, Guyton has included a chapter about the controversy surrounded formation of Yosemite Valley and a field trip through Yosemite on which readers may see glaciers and their effects on the landscape. Though the book is fairly complete, well researched, and certainly well written, Guyton might have discussed general concepts of glaciation a little bit more thoroughly. In addition, Guyton omits recent highly controversial (and perhaps faulty) research done in Yosemite by Jeffrey Schaffer (see _The Geomorphic Evolution of the Yosemite Valley and Sierra Nevada Landscapes: Solving the Riddles in the Rocks_, 1997). The book, however, is an excellent book for anyone wanting to learn more about California's glaciers.
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6 of 7 people found the following review helpful:
4.0 out of 5 stars
Good overview of California glaciers for the general public, January 7, 2000
This review is from: Glaciers of California: Modern Glaciers, Ice Age Glaciers, the Origin of Yosemite Valley, and a Glacier Tour in the Sierra Nevada (California Natural History Guides) (Hardcover)
I essentially agree with the previous review, with the exception that the absence of references to J. P. Schaffer's work on glaciation in the Sierra Nevada should not be viewed as a problem with the book. Speaking as a glacial geologist who has worked extensively in the Sierra Nevada, the public should know that Schaffer's work has repeatedly failed to pass scientific peer review. Until it does so, it would be irresponsible for other authors, like Guyton, to present it in any publication purporting to be a synopsis of current scientific thinking. Guyton has done a very commendable job of summarizing the latest CRITICALLY REVIEWED thinking on timing and geomorphic effects of ancient glaciation in the Sierra. I would recommend it to anyone interested in learning more about modern and ancient glaciers of California.
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5.0 out of 5 stars
Short, sweet, and very understandable., September 14, 2008
This is a basic, understandable review of the Ice Age and later glaciation of the mountains of California. The focus is on Yosemite, but other mountains in California are briefly covered. Glaciers that are present now date to the Little Ice Age, from 100- 700 years old only. They are shrinking fast. But older, "big" ice-age glaciers covered these mountains, starting with the glaciations of 1.5 million years ago. After reading the book, you understand why our mountains are so dramatically sculpted. The author briefly discusses the causes of cyclical changes in the temperature of the Northern hemisphere that accounts for recurrence of ice ages. There follows a good tour of Yosemite, by car,foot, and backpack, where you can see modern glaciers as well as the evidence of ancient ice ages. Many mountaineering terms (Col, Horn, Arête, Couloirs,etc) refer to mountain features that are products of glaciation, and are defined. There is a good glossary. Hikers, climbers, and mountain-visitors will enjoy this good book.
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