Index Catalog // ScholarsArchive@OSU

Major element analysis of tephra from the Amami-Sankaku Basin, Izu Bonin back arc

Creator:: Cepello, Jennifer
Abstract:: IODP 351 cruise to the back arc region of the Izu Bonin contained cores with tephra layers intermitted within. These tephra layers under went electron micro probe analysis to gather major earth element abundances in order to put a parameter of a. where did the tephra originate from (volcanic source)...
Resource Type:: Presentation

Meeting of the magmas : the evolutionary history of the Kalama Eruptive Period, Mount St. Helens, Washington

Creator:: Lieuallen, Athena Erin
Abstract:: Comprehension of eruptive histories is critical in understanding the evolution of magmatic systems at arc volcanoes and may supply evidence to the petrogenesis of intermediate and evolved magmas. Within the 300 ka eruptive history of Mount St. Helens, Washington, the Kalama Eruptive Period, 1479- ~1750 CE was bracketed by interludes...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: _______________________________________________________________ Frank J. Tepley

Volatiles and Geochemical Fingerprinting of Plagioclase-Hosted Melt Inclusions from Mid-Ocean Ridge Lavas: Determination of Depth of Crystallization and Melt Composition in the Lower Crust

Creator:: Kotash, Alisa K.
Abstract:: The global mid-ocean ridge system is the largest magmatic system encompassing over 75% of the Earth’s total volcanism. As magmas ascend through the vertically variable oceanic crust, melts begin to crystallize and diversify and subsequently erupt at the surface. The interpretation of these erupted products observed on the seafloor requires...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Frank J. Tepley III The global mid-ocean ridge system is the largest magmatic system

The provenance and trace element signatures of MORB anorthitic plagioclase

Creator:: Burleigh, Andrew W.
Abstract:: In an attempt to understand the phase equilibria and petrogenesis of MORB anorthitic plagioclase, Cr-spinel commonly hosted within anorthitic plagioclase has been investigated petrographically and compositionally. Based on spinel-anorthite relationships from three samples of plagioclase ultra-phyric basalt (PUB; Southeast Indian Ridge, Axial Seamount and West Valley Segment, Juan de Fuca...
Resource Type:: Masters Thesis
Full Text:: Plagioclase Abstract approved: Roger L. Nielsen Frank J. Tepley III In an attempt to understand the

Exploring Volcano-Tectonic Connections in Cascadia – Temporal Linkages between Tephra Deposition and Megathrust Earthquakes

Creator:: Gutierrez, Joel C.
Abstract:: Explosively erupting volcanoes and megathrust earthquakes (Mw 8+ magnitude) occur at subduction zones and adjacent volcanic arcs. Volcanic eruptions are observed occurring close in time to megathrust earthquakes in the historical record from at least the 18th century CE to present in locations globally, including Japan in 1707 CE (Chesley...
Resource Type:: Masters Thesis
Full Text:: Professors Adam Kent, Adam Schultz, Frank Tepley, James Liburdy, Chris Goldfinger and Dr. Randall Milstein

An Experimental and Analytical Investigation of the Parameters that Influence Measured CO₂ in Plagioclase-Hosted Melt Inclusions in MORBs

Creator:: Drignon, Melissa J.
Abstract:: To understand the processes that lead to the formation of the oceanic crust, one must know the composition and the depth at which primary melts originate. Towards this end, this dissertation focuses on plagioclase-hosted melt inclusions from plagioclase ultraphyric basalts (PUBs). Plagioclase is usually considered to be the second phase,...
Resource Type:: Dissertation and Video
Full Text:: Frank J. Tepley III To understand the processes that lead to the formation of the oceanic crust, one

The geology, geochronology, and geochemistry of the Kaskanak Batholith, and other late Cretaceous to Eocene magmatism at the Pebble porphyry Cu-Au-Mo deposit, SW Alaska

Creator:: Olson, Nansen H.
Abstract:: The Pebble porphyry Cu-Au-Mo deposit in Alaska is one of the world's largest Cu-Au mineral resources. Late Cretaceous magmatic evolution in the Pebble district culminated with the intrusion of the Kaskanak Batholith and associated porphyry copper-gold-molybdenum mineralization. The Kaskanak Batholith is a multiphase granodiorite intrusion with an estimated footprint of...
Resource Type:: Masters Thesis
Full Text:: also like to thank my committee members, Dr. Adam Kent, and Dr. Frank Tepley for their assistance

LangeAmyCEOASPetrogenesisPlagioclase-Phyric.pdf

Creator:: Lange, Amy E., Nielsen, Roger L., Tepley, Frank J., III, and Kent, Adam J. R.
Abstract:: Plagioclase ultraphyric basalts (PUBs) have been sampled along most mid-ocean ridges with ultraslow to intermediate spreading rates. Over the past 40 years, the prevalent models for their origin assume positive buoyancy of plagioclase in basaltic liquids resulting in selective concentration of plagioclase phenocrysts by floatation. However, when the global population...
Full Text:: . Lange, Roger L. Nielsen, Frank J. Tepley III, and Adam J. R. Kent College of Earth, Ocean, and

Origin of minor and trace element compositional diversity in anorthitic feldspar phenocrysts and melt inclusions from the Juan de Fuca Ridge

Creator:: Adams, David T., Nielsen, Roger L., Kent, Adam J. R., and Tepley, Frank J., III
Abstract:: Melt inclusions trapped in phenocryst phases are important primarily due to their potential of preserving a significant proportion of the diversity of magma composition prior to modification of the parent magma array during transport through the crust. The goal of this investigation was to evaluate the impact of formational and...
Resource Type:: Article
Full Text:: ) Frank J. Tepley III College of Oceanic and Atmospheric Sciences, Oregon State University, 104 COAS Admin

LangeAmyCEOASPetrogenesisPlagioclase-Phyric_SupportingInformation.zip

Creator:: Lange, Amy E., Nielsen, Roger L., Tepley, Frank J., III, and Kent, Adam J. R.
Abstract:: Plagioclase ultraphyric basalts (PUBs) have been sampled along most mid-ocean ridges with ultraslow to intermediate spreading rates. Over the past 40 years, the prevalent models for their origin assume positive buoyancy of plagioclase in basaltic liquids resulting in selective concentration of plagioclase phenocrysts by floatation. However, when the global population...

ScholarsArchive@OSU

Major element analysis of tephra from the Amami-Sankaku Basin, Izu Bonin back arc

Meeting of the magmas : the evolutionary history of the Kalama Eruptive Period, Mount St. Helens, Washington

Volatiles and Geochemical Fingerprinting of Plagioclase-Hosted Melt Inclusions from Mid-Ocean Ridge Lavas: Determination of Depth of Crystallization and Melt Composition in the Lower Crust

The provenance and trace element signatures of MORB anorthitic plagioclase

Exploring Volcano-Tectonic Connections in Cascadia – Temporal Linkages between Tephra Deposition and Megathrust Earthquakes

An Experimental and Analytical Investigation of the Parameters that Influence Measured CO₂ in Plagioclase-Hosted Melt Inclusions in MORBs

The geology, geochronology, and geochemistry of the Kaskanak Batholith, and other late Cretaceous to Eocene magmatism at the Pebble porphyry Cu-Au-Mo deposit, SW Alaska

LangeAmyCEOASPetrogenesisPlagioclase-Phyric.pdf

Origin of minor and trace element compositional diversity in anorthitic feldspar phenocrysts and melt inclusions from the Juan de Fuca Ridge

LangeAmyCEOASPetrogenesisPlagioclase-Phyric_SupportingInformation.zip

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