Principles of Geology - An Attempt to Explain the Former Changes of the Earth's Surface, by Reference to Causes now in Operation

In 1833, the Scottish geologist Charles Lyell published the final volume of his groundbreaking trilogy, which profoundly influenced Charles Darwin. With infectious enthusiasm, Lyell describes the composition of the Earth's crust, examines volcanic formations and marine fossils, and explains rock stratification, separating geological formations into three periods.