Nelson Horatio Darton
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Nelson Horatio Darton (1865 – 1948) was a geologist who worked for the United States Geological Survey. He was born in Brooklyn, New York, and started working in his uncle's drug business at the age of 13, also becoming a practicing chemist. His interest in geology started as a sideline, and he was hired by the USGS in 1886.
Darton was an expert at geological photography, a noted geologic map maker, and a hydrogeologist. He was awarded the Penrose Medal in 1940. He also made some important paleontological discoveries.