Author

H. E. Lillis

Date of Award

1-15-1942

Degree Type

Report

First Advisor

Eugene S. Perry

Abstract

The Three Forks are includes parts of Jefferson, Madison, Broadwater Pond Gallatin counties, Montana. Sedimentary formations lie at the surface nearly everywhere in the area, and the rugged surface topography has been developed through the folding and tilting of these formations and their dif­ferential erosion.