Nevin M. Fenneman

Nevin Melancthon Fenneman (26 December 1865 – 4 July 1945) was an American professor of geology, with a long career at the University of Cincinnati. His contributions were primarily in the large scale geographical understanding of American geology and based on his wide ranging studies, he produced a classification of US physiographic regions using a three-tiered system of 8 major divisions, 25 provinces and 78 sections that remains in use today.