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Filtering by: Creator Goldbogen, Jeremy A. Academic Affiliation College of Earth, Ocean, and Atmospheric Sciences Committee Member Kent, Adam J. R.

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:

Steens Mountain, with eruptions spanning no more than a few 100,000 years. The Steens Basalt has been
Petrologic Investigations into the Magmatic Processes That lead to Au, Ag, and Base Metal Fertility: Insights from Pebble, Alaska and the Emigrant Pass Volcanic Field, Nevada

Creator:

Olson, Nansen H.

Abstract:

Magmatic-hydrothermal ore deposits are giant geochemical anomalies in the earth’s crust most often generated by normal magmatic terrestrial processes. They are often associated with oxidized and hydrous intermediate to highly evolved magmas that have concentrated metals and have the necessary components to efficiently extract and transport them as ascending magmatic-hydrothermal...

Resource Type:

Dissertation

Full Text:

sulfides in favorable overlying country rocks. In contrast, a magmatic connection to Carlin-type Au(Ag