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The Hampton Tuff, High Lava Plains, Oregon : Implications for Westward Migrating Silicic Volcanism

Creator:

Sanville, Henri J.

Abstract:

The Hampton Tuff is a 3.9 ± .02 Ma (2σ) ignimbrite sheet from the High Lava Plains of central Oregon. The majority of known outcrops exist to the north, within ~22 mi (~35 km) of the Frederick Butte Volcanic Center, the proposed source of the tuff. Thickness of the tuff...

Resource Type:

Masters Thesis

Full Text:

presented on December 10, 2015. Title: The Hampton Tuff, High Lava Plains, Oregon: Implications for
Basaltic volcanism and tectonics of the High Lava Plains, southeastern Oregon

Creator:

Jordan, Brennan T.

Abstract:

The High Lava Plains province (HLP) of southeastern Oregon is a Miocene to Recent volcanic upland characterized by widespread basaltic volcanism and west-migrating rhyolitic volcanism. New ⁴⁰Ar/³⁹Ar ages for HLP rhyolites demonstrate that the trend of migrating rhyolitic volcanism is robust, reflecting westward migration at a rate of -35 km/m.y....

Resource Type:

Dissertation

Full Text:

Tectonics of the High Lava Plains, Southeastern Oregon. Abstract approved: David W. Graham The High Lava