William Smith (1769-1839)
From Britannica Concise Encyclopedia
English engineer and geologist, known as the founder of the science of stratigraphy. The son of a blacksmith, he was largely self-educated. He produced the first geologic map of England and Wales (1815), setting the style for modern geologic maps, and subsequently a series of geologic maps of the English counties. He introduced many techniques still used, including the use of fossils for the dating of layers.