Portland State University. Department of Geology
Paul E. Hammond
Date of Award
Master of Science (M.S.) in Geology
1 online resource. Digitized typeset
Stratigraphic geology, Geology -- Oregon -- Castle Rock area, Geology -- Oregon -- Grant County, Geology -- Oregon -- Harney County, Geology -- Oregon -- Malheur County
The geology of the Castle Rock area aids in the understanding of Cenozoic volcanic stratigraphy and structures in an area where these volcanic rocks thin near the margins of the pre-Tertiary basement rocks and structural trends are overlapping. The Castle Rock area is unique in several aspects and is important in understanding and interpreting the geology in adjacent regions which have all been studied, at least on a regional basis. Intrusive ash-flow bodies of the Dinner Creek Ash-Flow Tuff, well-exposed sections of complexly interstratified volcanic rocks and well-exposed faults, and of high amount of erosional relief are features which make this area a unique and important addition to the understanding of the stratigraphy of eastern Oregon.
Wood, John David, "The Geology of the Castle Rock Area, Grant, Harney and Malheur Counties, Oregon" (1976). Dissertations and Theses. Paper 2608.