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Filtering by: Creator Thompson, Gene Thomas Degree Level Doctoral Resource Type Dataset Subject Flood basalts--Oregon

Petrogenesis of the Steens Basalt : Variation in Source Contributions and Effects of Crustal Passage During the Onset of Columbia River Flood Basalt Volcanism

Creator:

Moore, Nicole E.

Abstract:

Continental flood basalts represent short-lived but immense blasts of mafic magma to the continental crust. The youngest and smallest continental flood basalt worldwide, the Columbia River Basalt, initiated with the eruption of the most mafic member, the Steens Basalt (~16.9 Ma). The Steens Basalt is exposed in southeast Oregon, southwest...

Resource Type:

Dataset and Dissertation

Full Text:

(e.g., Cox, 1980; Thompson et al. 1983; Garfunkel, 2008; viz., high Fe/Mg, low MgO, low Mg#, and low