First Advisor

Paul E. Hammond

Date of Publication

1981

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Geology

Department

Earth Science

Language

English

Subjects

Geology -- Oregon -- Mount Jefferson Wilderness

DOI

10.15760/etd.3259

Physical Description

1 online resource (198 p.)

Abstract

The volcanic stratigraphy and petrography is described for a 46 km2 area on the southern flank of Mount Jefferson in the north-central part of the Oregon High Cascades. Here, volcanic processes have been active throughout Quaternary time, resulting in complex stratigraphic relationships. In addition, three formerly recognized glaciations and a two-phase period of neoglaciation have eroded the terrain, depositing tills in contact or interstratified with the volcanic units. Collectively, these processes and the resulting deposits are characteristic of High Cascades development.

Rights

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Comments

If you are the rightful copyright holder of this dissertation or thesis and wish to have it removed from the Open Access Collection, please submit a request to pdxscholar@pdx.edu and include clear identification of the work, preferably with URL

This thesis contains supplemental content

Persistent Identifier

http://archives.pdx.edu/ds/psu/18755

Additional Files
gannon1.pdf (9635 kB)
Figure 1
gannon2.pdf (6747 kB)
Figure 2
gannon3.pdf (3001 kB)
Figure 3
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