Date of Award:

5-1953

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Geosciences

Department name when degree awarded

Geology

Committee Chair(s)

J. Stewart Williams

Committee

J. Stewart Williams

Committee

Clyde T. Hardy

Committee

Orson W. Israelsen

Committee

Melvin Cannon

Committee

Robert E. Landon

Abstract

This thesis presents the results of a geologic investigation of the Rendezvous Peak area, Cache and Box Elder Counties, Utah (Figure 1). The area lies between the Bear River Range on the east and the Northern Wasatch Mountains on the west (Figure 2). It is south of Cache Valley in which Logan, Utah, is located and north of Ogden Valley, east of the Wasatch Range near Ogden, Utah.

The Rendezvous Peak area is centrally located in a little known and critical area between the Logan Peak syncline in the Bear River Range and the more complex structures in the Wasatch Range. Rocks of all periods of the Paleozoic era except Pennsylvanian and Permian crop out in the Rendezvous Peak area. Rocks of Tertiary age overlap the Paleozoic rocks in the northeastern part of the mapped area. A conspicuous syncline in Paleozoic rocks, which plunges north-northeast, as well as many high-angle faults of Basin and Range age are found in the area. The high-angle faults trend mostly north-south as do the major faults of the Logan Quadrangle to the north (Williams, 1948, pl.1). Other high-angle faults in the Rendezvous Peak area trend east-west. One major fault, however, extends northeast-southwest. Two high-level erosion surfaces are recognized. The Rendezvous Peak erosion surface is found on the higher peaks of the area which are composed of Paleozoic rocks. It slopes eastward toward the southern part of Cache Valley. The McKenzie Flat surface, which is lower than the Rendezvous Peak surface, truncates Tertiary and adjacent Paleozoic rocks in the northeastern part of the mapped area.

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