Index Catalog // ScholarsArchive@OSU

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:: AN ABSTRACT OF THE THESIS OF Athena Erin

Development of continental magmatic systems : insights from amphibole chemistry of the Altiplano Puna Volcanic Complex, Central Andes

Creator:: Abot, Manggon
Abstract:: The pressure history of a continental magmatic system can be deciphered by analyzing the composition of amphiboles in the eruptive products where the pressure of equilibration correlates with the depth of the magmatic system. This can reveal vertical evolution of the magma as amphibole composition varies significantly with temperature and...
Resource Type:: Masters Thesis
Full Text:: Anita L. Grunder The pressure history of a continental magmatic system can be deci- phered by

Evolution and inheritance of Cascadia sub-arc mantle reservoirs

Creator:: Bromley, Sarah Ashley
Abstract:: Inheritance from pre-existing mantle domains and fluid and melt contributions from active subduction together produce the geochemical signatures of mantle-derived arc basalts. In this context, this work evaluates the evolution of Cascadia mantle sources by documenting the isotopic and compositional characteristics of primitive basalts along a transect across the Eocene-Oligocene...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Anita L. Grunder Inheritance from pre-existing mantle domains and fluid and

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:: : ______________________________________________________ Anita L. Grunder The Hampton Tuff is a 3.9 ± .02 Ma (2σ) ignimbrite sheet from the High

Magma dynamics and evolution in continental arcs : insights from the Central Andes

Creator:: Grocke, Stephanie B.
Abstract:: Constraining the magma evolution and dynamics that lead to the eruption of large volume continental arc systems is fundamental to our understanding of continental crust formation. An investigation into the magmagenesis that results in the formation of the Central Volcanic Zone (CVZ) in the Andes of South America, situated atop...
Resource Type:: Dissertation
Full Text:: from the Central Andes. Abstract approved: Shanaka L. de Silva Constraining the magma evolution

Snow Peak, OR: late Miocene to early Pliocene volcanism in the central Cascadia forearc

Creator:: Hatfield, Ashley K.
Abstract:: Snow Peak is a voluminous shield volcano located ~50 km west of the axis of the modern Cascade arc. A previously published K-Ar age estimate indicates that the Snow Peak lavas are ~3 Ma. Subsequently, the preliminary research framework for studying the Snow Peak lavas focused on constraining the petrogenesis...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Roger L. Nielsen Snow Peak is a voluminous shield volcano located ~50 km

The origin of mid-ocean ridge basalts : insights from trace element contents in anorthite, anorthite-hosted melt inclusions, and ocean core complexes

Creator:: Weinsteiger, Allison B.
Abstract:: The primary goal of this study is to access the processes that alter primary melts after segregation from a mantle source and ultimately form petrologic Layers 2 and 3 of the Ocean Crust. Mineral, melt inclusion, and whole rock chemical compositions are utilized to further the understanding of 1) the...
Resource Type:: Dissertation
Full Text:: : ________________________________________________________________________ Adam J.R. Kent Roger L. Nielsen The primary goal of this study is to access

Controls on eruption style and magma compositions at Mount Hood, Oregon

Creator:: Koleszar, Alison M.
Abstract:: This study is an effort to characterize the magma sources, plumbing system, and eruptive behavior of Mount Hood, a low-explosivity recharge-dominated volcano in the Oregon Cascades. The three manuscripts in this dissertation make use of melt inclusion data, phenocryst compositions, and whole rock petrology and geochemistry to build a schematic...
Resource Type:: Dissertation
Full Text:: students at OSU, especially Erin Lieuallen, Ashley Bromley, and Matt Loewen, who provided moral support

Recent foraminifera and associated sediments of the continental shelf in the vicinity of Newport, Oregon

Creator:: Jarman, Gary Davis
Resource Type:: Masters Thesis
Full Text:: Calloway, Gerald Davis, and Lz'wrenc Cooper. TÁI3LE OF CONTENTS Pagc L NTRODUCTION

Structural Evolution, Vein Orientation, and Paragenesis of the Botija Porphyry Cu-Mo-(Au) Deposit, Colón, Panamá

Creator:: Sepp, Michael D.
Abstract:: The Botija Cu-Mo-Au porphyry deposit is located in the Cobre Panamá mining district, which contains several deposits with a global measure and indicated and inferred resource of 14.8 MT of Cu. These deposits are associated with the Cerro Petaquilla batholith, which has U/Pb zircon ages of 26-33 Ma (Whattam et...
Resource Type:: Masters Thesis
Full Text:: also like to give a special thanks to Heather Bervid, Alaxander de Moore, and Erin Peck who assisted

ScholarsArchive@OSU

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

Development of continental magmatic systems : insights from amphibole chemistry of the Altiplano Puna Volcanic Complex, Central Andes

Evolution and inheritance of Cascadia sub-arc mantle reservoirs

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

Magma dynamics and evolution in continental arcs : insights from the Central Andes

Snow Peak, OR: late Miocene to early Pliocene volcanism in the central Cascadia forearc

The origin of mid-ocean ridge basalts : insights from trace element contents in anorthite, anorthite-hosted melt inclusions, and ocean core complexes

Controls on eruption style and magma compositions at Mount Hood, Oregon

Recent foraminifera and associated sediments of the continental shelf in the vicinity of Newport, Oregon

Structural Evolution, Vein Orientation, and Paragenesis of the Botija Porphyry Cu-Mo-(Au) Deposit, Colón, Panamá

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