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Filtering by: File Format image/jpeg Rights Statement Copyright Not Evaluated Subject Geology -- Oregon -- Jefferson County

Geology of part of the northern half of the Bend quadrangle, Jefferson and Deschutes counties, Oregon

Creator:

Stensland, Donald Eugene

Abstract:

The mapped area is part of the middle Deschutes Basin of central Oregon, which lies in the northwestern corner of the High Lava Plains physiographic province, between the Cascade and Ochoco Mountains. It is underlain by Cenozoic lavas, tuffs and sediments of continental origin. The oldest rocks in the sequence...

Resource Type:

Masters Thesis
Geology of the Fly Creek quadrangle and the north half of Round Butte Dam quadrangle, Oregon

Creator:

Hewitt, Samuel Loyd

Abstract:

A thick sequence of intercalated andesite and basalt flows, tuffs, and volcanic sediments crop out in the Fly Creek Quadrangle and the north half of the Round Butte Dam Quadrangle. This sequence was deposited in the ancestral Deschutes River Valley along the east flank of the Cascade Range during the...

Resource Type:

Masters Thesis
The Deschutes Formation-- High Cascade transition in the Whitewater River area, Jefferson County, Oregon

Creator:

Yogodzinski, Gene M.

Abstract:

The Whitewater River area is located directly east of Mt. Jefferson in the Cascades of central Oregon. Approximately 90 mi2 (230 km2) were mapped (scale 1/24,000) and four new K-Ar ages and 151 major element analyses were obtained in a study of the stratigraphic and magmatic transition from the Miocene...

Resource Type:

Masters Thesis