This thesis is the result of information obtained during the field seasons of 1947 and 1948. The writer was an assistant on a geological survey party for the Quebec Bureau of Mines, working in the area. The thesis contains a description of the rock formations and an interpretation of the regional structures. Much of the information had to be obtained from the literature previously published on the district. The geological sketch-map accompanying this paper is drawn at the scale of one mile to the Inch. It is a compilation of the previous geological work In Gaspe completed and modified with the aid of personal notes. In order to give a better picture of the structures, a portion of this map was drawn at a scale of half a mile to the Inch. All the important exposures of rocks situated south of the Shickshook series were visited, but only two weeks were spent on the northern contact of this series with the North Coast sediments. Consequently more attention will be given to the Geology south of the Shickshooks than can be given to the northern part of the area. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate