Index Catalog // ScholarsArchive@OSU

Development of a progeny marker for steelhead

Creator:: Shippentower, Gene E.
Abstract:: This study was undertaken to determine if strontium chloride could be used to create a trans-generational otolith mark in steelhead (Oncorhynchus mykiss). I completed two strontium injection trials and a survey of juvenile steelhead from various steelhead hatcheries. The two trials measured Sr:Ca ratios in otoliths in response to injections...
Resource Type:: Masters Thesis
Full Text:: . Douglas Markle and Dr. Roger Nielsen for providing assistance during my graduate work. I would like

Dynamics of a long-lived magmatic system as indicated by variations in amphibole composition and textures in dacites erupted over 11 M.y. at the Aucanquilcha Volcanic Cluster, Central Andes, Chile

Creator:: Giles, Denise E. L.
Abstract:: The Aucanquilcha Volcanic Cluster (AVC) is the erupted part of a magmatic system with a complex and long-lived history. The AVC lies at 21°S in the high Andes and is built on thick continental crust. The thick crust in the area combined with the prolonged magmatic activity make it an...
Resource Type:: Masters Thesis

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:: Duncan for his contribution to the geochronology work and for lending use of his laboratory; to Roger

Wheeled Mobility Devices Performance and Passive Securement Systems

Creator:: Mather, Andrea
Abstract:: Wheeled mobility devices (WhMD) pose unique safety risks to users while riding public transportation. Unsecured or improperly secured WhMDs create safety concerns for other transit riders and operators. Tests using accelerometers and visual observations were conducted to understand how WhMD orientation and securement in articulated buses, streetcars, and light rail...
Resource Type:: Masters Thesis

Helium isotope variations in peridotite, gabbro and basalt from the Kane Oceanic Core Complex

Creator:: Konrad, Kevin
Abstract:: The Kane Oceanic Core Complex (OCC) is a valuable window into crustal architecture and chemical composition of the lithosphere beneath a slow-spreading ocean ridge. A suite of > 30 samples (comprised of whole rocks, mineral separates and basalt glasses) has been analyzed for ³He/⁴He isotope ratios and He concentrations. Gas...
Resource Type:: Masters Thesis
Full Text:: . Conversations about petrology and crustal accretion with Roger Nielsen were invaluable to the discussion of

A study of the ergonomics of emergency stop pushbuttons

Creator:: Zárate, Patricia B.
Abstract:: Emergency stop controls are essential parts of industrial machinery because they are designed to stop the operation in case of emergencies without risks to operators, equipment, products, or facilities. Current guidelines for emergency stop controls have been formulated based on experience but not on empirical studies. The main objectives of...
Resource Type:: Masters Thesis
Full Text:: . Edward McDowell, Dr. Brian Paul, and Dr. Roger Nielsen, for their valuable input and suggestions while

The genesis of the San Vicente lead zinc rhythmite deposit, Peru : a petrologic, geochemical, and sulfur isotope study

Creator:: Schütfort, Erwin G.
Abstract:: The San Vicente zinc lead deposit is located in the Eastern Andes of Central Peru. The deposit is an epigenetic Mississippi Valley-type deposit based on stratigraphic, geologic, petrographic, and geochemical evidence. The dolomite host rocks of the Pucara Group are of Triassic-Jurassic age. The source of metals are red sandstones...
Resource Type:: Masters Thesis
Full Text:: , scientific inquiry, and geologic writing. My committee members John Dilles, Roger Nielsen, and Jack

Determination of marine migratory behavior and its relationship to selected physical traits for least cisco (Coregonus sardinella) of the western Arctic coastal plain, Alaska

Creator:: Seigle, John C.
Abstract:: With increased resource development on the western Arctic coastal plain of Alaska (especially within the oil extraction industry) it is important to understand the basic life history attributes of whitefish stocks in the region in order to ensure appropriate management. These fish are a crucial part of subsistence harvests for...
Resource Type:: Masters Thesis
Full Text:: science. I am indebted to Roger Nielsen for his guidance in the use of electron microprobe technology

Mineralogy and geochemistry of copper deposits of the Lights Creek Stock, California : an assessment of porphyry versus iron-oxide copper origin

Creator:: Stephens, Abigail E.
Abstract:: The Lights Creek Stock is an 18 square kilometer copper-bearing granitoid intrusion within the Plumas Copper Belt in the northern California Sierra Nevada. Engels Mine, Superior Mine, and Moonlight Valley represent the main copper-mineralization in the Lights Creek district and small prospects include the Ruby Mine, and Moonlight Creek. The...
Resource Type:: Masters Thesis

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

Creator:: Vernoff, Suellen
Abstract:: Both Leperisinus oregonus and L. californicus are bark beetle species which emerge from Fraxinus latifolia brood logs as sexually immature adults and disperse to living ash. Occasional field observations suggest that, for overwintering and maturation feeding, L. oregonus enter trunks and branches, whereas L.; californicus enter twig crotches, buds and...
Resource Type:: Masters Thesis
Full Text:: Sound production in Leperisinus oregonous Blackman and L

ScholarsArchive@OSU

Development of a progeny marker for steelhead

Dynamics of a long-lived magmatic system as indicated by variations in amphibole composition and textures in dacites erupted over 11 M.y. at the Aucanquilcha Volcanic Cluster, Central Andes, Chile

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

Wheeled Mobility Devices Performance and Passive Securement Systems

Helium isotope variations in peridotite, gabbro and basalt from the Kane Oceanic Core Complex

A study of the ergonomics of emergency stop pushbuttons

The genesis of the San Vicente lead zinc rhythmite deposit, Peru : a petrologic, geochemical, and sulfur isotope study

Determination of marine migratory behavior and its relationship to selected physical traits for least cisco (Coregonus sardinella) of the western Arctic coastal plain, Alaska

Mineralogy and geochemistry of copper deposits of the Lights Creek Stock, California : an assessment of porphyry versus iron-oxide copper origin

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

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