Date of Award


Degree Type

Bachelors Thesis

Degree Name

Bachelor of Science in Geological Engineering



First Advisor

Dr. Eugene S. Perry

Second Advisor

Dr. Alvin M. Hanson


It has been hoped that a micropaleontological study of the shales of the Upper Cretaceous Colorado Group in northern Montana would reveal certain faunal zones which would serve as markers in an otherwise drab, undifferentiated, 1800 feet of grey, fissile shale. This paper presents the results of a study of the microfauna in certain samples from this shale in the Sunburst Dome area north of Shelby, Montana.