During the past season the writer, in company with Mr. J. M. Jessup and Mr. M. A. Becher, from the University of Wisconsin, made a somewhat detailed survey of parts of the mountains near Ogden, Utah, and were afforded glimpses of wider range both north and south. This paper will present in a disconnected way some of the more important results of the work. It can not lay claim to being a unified account of the geology of the range, for the opportunities of the party were not such as to permit a sufficiently comprehensive survey. The writer and his companions fully realize that they have only scratched the surface in a highly fertile field of geologic study.
The Wasatch Mountains, as defined by the U. S. Geographic Board, comprises two distinct parallel ranges which are separated by depressions 4 to 10 miles wide. The eastern range is often . . .