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Filtering by: Creator Kroll, Adam L. Remove constraint Creator: Kroll, Adam L. Academic Affiliation College of Earth, Ocean, and Atmospheric Sciences Remove constraint Academic Affiliation: College of Earth, Ocean, and Atmospheric Sciences Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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Magnetotelluric Studies of Tectonic Systems and Volcanic Areas of North America

Creator:

Bowles-Martinez, Esteban

Abstract:

Magnetotellurics is used in two geologic settings on scales ranging from 1000-km tectonic structures to local features hundreds of meters wide. These areas are the Midcontinent Rift System (MRS) and its related mantle plume in the northern Midwestern United States and Newberry Volcano in central Oregon. The MRS study uses...

Resource Type:

Dissertation

Full Text:

America Abstract approved: ______________________________________________________ Adam
Crystal Records of the Origin, Evolution, and Thermal Histories of Magmas

Creator:

Bradshaw, Richard W., 1985-

Abstract:

In volcanic systems, magma is generally stored in the shallow crust prior to eruption. The conditions of this storage directly impact whether the magma eventually erupts, or crystallizes within the crust to form a pluton. In this dissertation I present four studies that investigate the storage conditions of a number...

Resource Type:

Dissertation
The Deschutes Formation: evidence of extension-enhanced explosivity in the early High Cascades

Creator:

Pitcher, Bradley W.

Abstract:

The eruptive history of the Quaternary Cascades arc has been relatively well characterized. However, much less is known about the frequency and sizes of explosive eruptions produced by earlier stages of the arc. The Late Neogene Deschutes Formation of Central Oregon preserves a remarkable record of heightened pyroclastic activity during...

Resource Type:

Dissertation

Full Text:

Abstract approved: ______________________________________________________ Adam J.R. Kent The
Revisiting Lōʻihi: Geochemistry of Kamaʻehuakanaloa Lavas Reveals Complexities in the Pre-Shield to Shield Transition and Hawaiian Mantle Plume Source

Creator:

Truong, Thi B.

Abstract:

Studies of Hawaiian volcanoes contribute valuable insights about Earth processes and mantle evolution, and are fundamental for understanding the construction of the largest volcanoes on terrestrial planets. The pre-shield stage exists in every Hawaiian volcano, but is usually blanketed by high volume tholeiitic lava flows during the main shield stage....

Resource Type:

Dissertation

Full Text:

Transition and Hawaiian Mantle Plume Source Abstract approved: Adam J.R. Kent Studies of Hawaiian
Volatile mobility of trace metals in volcanic systems

Creator:

Loewen, Matthew W.

Abstract:

Semi-volatile trace metals like Li, Cu, Mo, Sn, In, and Pb have the potential to track mobility of a volatile phase in volcanic systems. In this dissertation four studies are presented that either directly investigate or are motivated by observations of trace metal behavior in volcanic systems. A common tool...

Resource Type:

Dissertation

Full Text:

Systems. Abstract approved: Adam J.R. Kent Semi-volatile trace metals like Li, Cu, Mo, Sn, In, and
Thermochemical Storage Conditions of Caldera Forming Magmatic Systems Revealed by Diffusion Chronometry

Creator:

Lubbers, Jordan E.

Abstract:

Large silicic magmatic systems are responsible for producing the largest explosive volcanic eruptions on earth. These phenomena, although infrequent (i.e., 1 per 100,000 years), impact the global climate, deposit ash over continent sized regions, and significantly alter landscapes. Silicic magmatism also plays important roles in the formation and ongoing evolution...

Resource Type:

Dissertation

Full Text:

by Diffusion Chronometry Abstract approved: Adam J.R. Kent Large silicic
Influence of upwelling-season coastal currents on near-bottom dissolved oxygen concentrations over a submarine bank

Creator:

Adams, Katherine A.

Abstract:

Wind-driven coastal upwelling brings subsurface water onto the central-Oregon shelf after the spring transition each year. This cold and salty source water is oxygen-poor, yet above the hypoxic threshold, dissolved oxygen < 1.4 ml l⁻¹. Once on the shelf, dissolved oxygen (DO) concentrations of upwelled near-bottom waters are modified by...

Resource Type:

Dissertation

Full Text:

above the hypoxic threshold, dissolved oxygen < 1.4 ml l-1. Once on the shelf, dissolved oxygen (DO
The 3.1 Ma to 100 ka Goat Rocks Volcanic Complex: Persistence and Evolution of Magmatism at a Long-Lived Major Andesite Locus on the Cascade Arc

Creator:

Wall, Kellie T.

Abstract:

The imposing andesite stratovolcano is the characteristic expression of subduction zone magmatism, posing hazards to coastal populations and bearing insight into deep Earth processes. On a map of a typical volcanic arc, one can easily distinguish the approximately linear alignment and regular spacing of these major edifices that stand out...

Resource Type:

Dissertation

Full Text:

: ______________________________________________________ Anita L. Grunder The imposing andesite stratovolcano is the characteristic expression
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:

Video and Dissertation

Full Text:

Melt Inclusions in MORBs Abstract approved: Roger L. Nielsen
Crustal architecture and magma dynamics in a large continental magmatic system : a case study of the Purico-Chascon Volcanic Complex, Northern Chile

Creator:

Burns, Dale H.

Abstract:

The ~1 Myr history of the Purico-Chascon volcanic complex (PCVC) records significant changes in the production and storage of magmas in the crust. At ~1 Ma activity at the PCVC initiated with the eruption of a large 80-100 km³ crystal-rich dacite ignimbrite with restricted whole rock ⁸⁷Sr/⁸⁶Sr isotope ratios between...

Resource Type:

Dissertation

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Academic Affiliation

College of Earth, Ocean, and Atmospheric Sciences[remove]40

Advisor

Dilles, John H.4
Kent, Adam J. R.4
Clark, Peter U.2
Koppers, Anthony A. P.2
Mote, Philip W.2
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2013 to 2023

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Committee Member

Kent, Adam7
Grunder, Anita5
Kent, Adam J. R.5
Graham, David4
Meigs, Andrew4
more Committee Members »

Creator

Adams, Katherine A.1
Balbas, Andrea M.1
Beeson, Jeffrey Watson1
Bill, Nicholas S.1
Bowles Martinez, Esteban1
more Creators »

Contributor

Biasi, Joseph1
Coble, Matthew1
Grunder, Anita L.1
Miggins, Daniel1
Samelson, Roger, M.1
more Contributors »

Date

Date range begin – Date range end

Current results range from 2012 to 2023

View distribution

Unknown 1

Decade

2020-20299
2010-201930

Degree Field

Geology20
Geography7
Ocean, Earth, and Atmospheric Science7
Oceanography3
Earth, Ocean, and Atmospheric Sciences2
more Degree Fields »

Degree Level

Doctoral40

Degree Name

Doctor of Philosophy (Ph.D.)[remove]40

Language

English [eng]40

License

All rights reserved40

Non-Academic Affiliation

Oregon State University. Graduate School19

Peer Reviewed

No39

Resource Type

Dissertation40
Dataset1
Video1

Rights Statement

In Copyright40

Subject

Amphiboles1
Argon-argon dating1
Basalt1
Boulders -- Antarctica -- Dating1
California Current1
more Subjects »

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