Grand Canyon : solving Earth's grandest puzzle

Author / Creator

Powell, James Lawrence, 1936-

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Summary

"The centerpiece of scenic grandeur in the American West is the Grand Canyon, one of the great natural wonders of the world. How it came to be has captured the imagination not only of millions of v...

"The centerpiece of scenic grandeur in the American West is the Grand Canyon, one of the great natural wonders of the world. How it came to be has captured the imagination not only of millions of visitors to the canyon, but for over 135 years, the best American geologists as well. They recognized that the Colorado River carved this scenic masterpiece, but exactly when and how it did so eluded them. Only in the last few years has a consensus begun to emerge and now, for the first time, author James Lawrence Powell tells the story of how the mystery came to be solved." "What makes James Lawrence Powell's narrative so compelling, apart from the grandeur of its subject, is the richness of the characters who participated in this detective story. John Wesley Powell, the most famous of the nineteenth-century Canyon expedition leaders, the man for whom Lake Powell is named, discovered key geologic principles that helped to crack the puzzle. His two assistants, Grove Karl Gilbert and Clarence Dutton, built on Major Powell's findings to make historic scientific advances. Indeed, James Lawrence Powell shows how Dutton's work in the Grand Canyon led directly to our modern understanding of Continental Drift and Plate Tectonics. Twentieth-century geology of the Canyon culminated at a meeting in 2000 on the Canyon rim at which geologists debated the Lazarus Theory and other ideas far into the night. The solution on which they converged resonated around the world." "The 16 pages of photographs Powell collected for this tale bring to life the people and places of the story. The maps and geological time charts are useful references as to when and where the action took place. James Lawrence Powell has created a work of nonfiction that is an eloquent, educating, and exciting ride down to the bedrock of the American West and its most spectacular sight."--BOOK JACKET.

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