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Filtering by: Subject Magmatism -- Oregon Advisor Taylor, Edward M.

Alkaline and peraluminous intrusives in the Clarno Formation around Mitchell, Oregon : ramifications on magma genesis and subduction tectonics

Creator:

Appel, Michael

Abstract:

The Clarno Formation is a series of volcanic, volcaniclastic, and related intrusive rocks located in central Oregon. It is the westernmost extent of a broader Eocene magmatic belt that covers much the western United States. The magmatic belt stretches eastward from Oregon to western South Dakota, and from the Canadian...

Resource Type:

Masters Thesis

Full Text:

the Clarno Formation around Mitchell, Oregon: Ramifications on Magma Genesis and Subduction Tectonics
Petrogenesis of compositionally distinct silicic volcanoes in the Three Sisters region of the Oregon Cascade Range : the effects of crustal extension on the development of continental arc silicic magmatism

Creator:

Hill, Brittain Eames

Abstract:

The Three Sisters region of the Oregon High Cascades has developed three compositionally and petrogenetically distinct silicic (i.e., SiO₂ ≥ 58%) magma systems within the last 600 k.y. These silicic systems evolved from the same High Cascade mafic magma system and developed in the same 20x30 km area of the...

Resource Type:

Dissertation