Index Catalog // ScholarsArchive@OSU

Sedimentary petrology of some tertiary formations, Upper Nehalem River Basin, Oregon

Creator:: Van Atta, Robert O.
Abstract:: The southern half of the upper Nehalem River basin contains the most complete section of lower to middle Tertiary marine sedimentary and volcanic rocks in northern Oregon. Determination of stratigraphic relationships of six formations, and their depositional environments and provenance is the chief objective of this paper. More than 75...
Resource Type:: Dissertation

Geology, structure, and tectonic history of the Tualatin Basin, northwestern Oregon

Creator:: Popowski, Thomas Allan
Abstract:: The northwest-trending Neogene Tualatin basin in northwestern Oregon is a pull-apart basin with approximately 750 m of post-middle Miocene structural relief. Gently tilted uplands capped by Columbia River Basalt Group surround the synclinal basin on all sides. Integrated gravity, aeromagnetic, and seismic reflection data indicated that the basin is underlain...
Resource Type:: Masters Thesis

Stratigraphy and sedimentation of the Yaquina formation, Lincoln County, Oregon

Creator:: Goodwin, Clinton John
Abstract:: The late Oligocene Yaquina Formation is exposed in an arcuate outcrop pattern which extends along the central Oregon Coast from Siletz Bay on the north to Seal Rock on the south. Maximum inland extent of the Yaquina outcrop is :five miles. Maximum thickness of the Yaquina Formation is 2, 000...
Resource Type:: Masters Thesis

Geoarchaeological Investigations at the Devils Kitchen Site (35CS9), Southern Oregon Coast

Creator:: Curteman, Jessica Ann
Abstract:: A geoarchaeological investigation was conducted at the Devils Kitchen archaeological site, located in the Devils Kitchen State Park along the southern Oregon coast. In this thesis research, the author paired previous and recent excavated stratigraphy profiles to define culturally significant deposits. These stratigraphic units were defined further geochemically using a...
Resource Type:: Masters Thesis
Full Text:: (35CS9), Southern Oregon Coast AN ABSTRACT OF THE THESIS OF Jessica Ann Curteman for

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:: Jeremiah Oxford for the degree of Master of Science in Geology presented on October 13, 2006. Title

Surface-subsurface geology of the middle to upper Eocene sedimentary and volcanic rock units, western Columbia County, northwest Oregon

Creator:: Berkman, Thomas Anthony
Abstract:: The middle to upper Eocene Tillamook Volcanics form the basement in the Rock Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and andesites were erupted as shield volcanoes seaward of the strandline ontop of an older deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
Resource Type:: Masters Thesis

Paleoenvironmental reconstruction of an active margin coast from the Pleistocene to the present : examples from southwestern Oregon

Creator:: Punke, Michele Leigh
Abstract:: This study illustrates geoarchaeological and paleoenvironmental approaches to the investigation of an active margin coastal setting and provides examples of how information gleaned through examination of the stratigraphic record can reveal depositional signatures that provide insights into the geomorphic and tectonic forces active within coastal river basins. Three case studies...
Resource Type:: Dissertation

Partial melting of tonalite at the margins of a Columbia River Basalt Group dike, Wallowa Mountains, northeastern Oregon

Creator:: Petcovic, Heather L.
Abstract:: Columbia River Basalt Group dikes cut the tonalite-granodiorite Wallowa Batholith in northeastern Oregon, providing a natural setting in which to examine partial melting. Many dikes have up to 5 m-wide zones of quenched partially melted wallrock at their margins. This paper examines the progressive partial melting reactions in biotite-and hornblende-bearing...
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Geology presented on July 7. 2000. Title: Partial Melting of Tonalite at the

Volcanism and faulting along the northern margin of Oregon’s High Lava Plains : Hampton Butte to Dry Mountain

Creator:: Iademarco, Michael J.
Abstract:: Oregon’s High Lava Plains Province (HLP) has strongly bimodal basalt and rhyolitic volcanism. The Province caps the northern margin of the Basin and Range Province and serves as a transitional region between westward extension of the Basin and Range Province and unextended crust to the north . The High Lava...
Resource Type:: Masters Thesis

Geology and petrologic evolution of the silicic to intermediate volcanic rocks underneath Steens Mountain basalt, SE Oregon

Creator:: Langer, Vera W.
Abstract:: Steens Mountain in SE Oregon is part of the northern Basin and Range Province, and represents a horst tilted about 100 to the west that is bounded to the east by a high angle, NNE trending normal fault. The minimum displacement is about 1200 m. Volcanic rocks, exposed along the...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Sedimentary petrology of some tertiary formations, Upper Nehalem River Basin, Oregon

Geology, structure, and tectonic history of the Tualatin Basin, northwestern Oregon

Stratigraphy and sedimentation of the Yaquina formation, Lincoln County, Oregon

Geoarchaeological Investigations at the Devils Kitchen Site (35CS9), Southern Oregon Coast

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

Surface-subsurface geology of the middle to upper Eocene sedimentary and volcanic rock units, western Columbia County, northwest Oregon

Paleoenvironmental reconstruction of an active margin coast from the Pleistocene to the present : examples from southwestern Oregon

Partial melting of tonalite at the margins of a Columbia River Basalt Group dike, Wallowa Mountains, northeastern Oregon

Volcanism and faulting along the northern margin of Oregon’s High Lava Plains : Hampton Butte to Dry Mountain

Geology and petrologic evolution of the silicic to intermediate volcanic rocks underneath Steens Mountain basalt, SE Oregon

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