Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Subject Nitrogen -- Fixation -- Oregon -- Oregon Coast Range Academic Affiliation Geosciences Creator Oxford, Jeremiah

Early Oligocene intrusions in the central Coast Range of Oregon : petrography, geochemistry, geochronology and implications for the Tertiary magmatic evolution of the Cascadia forearc

Creator:

Oxford, Jeremiah

Abstract:

The Early Oligocene Oregon Coast Range Intrusions (OCRI) consist of gabbroic rocks and lesser alkalic intrusive bodies that were emplaced in marine sedimentary units and volcanic sequences within a Tertiary Cascadia forearc basin. The alkalic intrusions include nepheline syenite, camptonite, and alkaline basalt. The gabbros occur as dikes and differentiated...

Resource Type:

Masters Thesis

Full Text:

: Early Oligocene Intrusions in the Central Coast Range of Oregon: Petrography, Geochemistry