The Man Who Found Time - James Hutton and the Discovery of the Earth's Antiquity

Modern geology began with James Hutton, who looked to the ground rather than holy writ for clues about the age of our planet. He flourished during the Scottish enlightenment, which also saw the rise of his friends David Hume and Adam Smith; at that time, biblical scholarship's estimate of a 6,000-year-old Earth was widely accepted. How this number was derived-- it made sense even to Isaac Newton--is part of the interesting background material in this biography of Hutton, which also digresses into the politics of Hutton's Edinburgh in 1745, when Bonnie Prince Charlie arrived in town to raise the Stuart standard.