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This is the first of four books on North American geology by McPhee, collectively entitled Annals of the Former World. The other volumes are In Suspect Terrain, Rising from the Plains, and Assembling California.
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Not long ago, he reminds us, the world was once considered to be like a drying apple. Some areas shrink driving other places to rise leaving a skin of folds. McPhee describes the history of the idea of plate tectonics and how it confounded this earlier concept. The starting point was an understanding of the earth's age. A Scottish "gentleman," James Hutton was an astute observer and an eloquent speaker. Putting his findings in writing, however, "trampled people with words." Hutton revealed the vast duration of time required to form earth's vistas. He was followed by a herald of Charles Darwin, Charles Lyell. Between them, the age of the earth and of life replaced the established biblical origins. In effect, Hutton had taken the next major step in science after Copernicus. Plate tectonics, a group, rather than an individual's insight, opened new fields of research and provided more detailed views of Earth's processes.
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McPhee's other works provide testimony to his physical courage, which is immense. Join him as he drives a twisting mountain road with a geologist on a quest: "We turned a last corner, with our inner wheels resting firmly on the road and the two others supported by Deffeyes' expectations." McPhee has joined Kenneth Deffeyes to learn about the building of the Basin and Range - the succession of mountain strings and the valleys separating them. Through McPhee, Deffeyes relates how the mountains were thrust up, eroding silt into the lowlands. Mountain building forces also produce other interesting results. Deffeyes, "a big man with a tenured waistline" by McPhee's description, has "pure and noble purposes in coming to Nevada." His quest for "pure science" investigation is one side of Deffeyes' character. The
other side is his pursuit of a "noble" metal - silver. Deffeyes knows of how plate tectonics works. He also grasps the history of the Nevada mining industry. The combination may make him a millionaire from refining abandoned mines. But there are risks and he tells McPhee " . . . if anybody comes after me, I want you to go to jail cheerfully rather than surrender your notes." Fortunately, McPhee is still outside prison walls writing for us.
This first of several works on the revolution in thinking inspired by plate tectonics remains a readable and valuable book. McPhee doesn't confine his talents to imparting what scientists do. Arcane topics are deftly woven with our everyday lives and ambitions. Sit beside him in a cafe in Nevada as he queries patrons on their reaction to the possibility that the sea will someday flood their region: "We got a boat." His careful balance of deep science and everyday life has received many accolades, but never quite enough. The best reward is to buy him and read him - and the benefits to the reader will be the more enduring.