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Filtering by: Alt title Sedimentary rocks from the continental shelf and slope off the central coast of Oregon Remove constraint Alt title: Sedimentary rocks from the continental shelf and slope off the central coast of Oregon Committee Member Grunder, Anita Remove constraint Committee Member: Grunder, Anita

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Two-stage opening of the northwestern basin and range in eastern Oregon : evidence from the Miocene Crane basin

Creator:

Milliard, Justin B.

Abstract:

New data are presented that provide evidence for the onset of extensional deformation in the Northwestern Basin and Range within 1 million years after the eruption of the Steens Basalt at 16.5 Ma. New geologic mapping (1:24,000), stratigraphic sections, and ⁴⁰Ar/³⁹Ar dating of the Crane Basin rocks provide a control...

Resource Type:

Masters Thesis

Full Text:

‐STAGE OPENING OF THE NORTHWESTERN BASIN AND RANGE IN EASTERN OREGON: Evidence from the Miocene Crane
Timescales of large silicic magma systems : implications from accessory minerals in Pleistocene lavas of the Altiplano-Puna Volcanic Complex, central Andes

Creator:

Tierney, Casey R.

Abstract:

Constraining the development, evolution, and timescales of large silicic magma systems is important to understanding the development of granite batholiths, the relationships between volcanoes and their plutonic underpinnings, and the development of the continental crust. The ignimbrite flare up that produced the Altiplano-Puna Volcanic Complex of the Central Andes is...

Resource Type:

Masters Thesis

Full Text:

basement rock of the region. These rocks have been dated at ~600 Ma and consist mainly of slates
Diffuse deformation patterns along the North American plate boundary zone, offshore western United States

Creator:

Chaytor, Jason D.

Abstract:

Plate boundaries are commonly regions of complex, diffuse deformation with the motion across the boundary accommodated by numerous structural systems, rather than being narrow, discrete zones of deformation. One such boundary occurs where the North American plate makes contact with Juan de Fuca, Gorda, and Pacific plates along the west...

Resource Type:

Dissertation

Full Text:

continental and oceanic lithosphere, most of our understanding of these zones comes from those parts of the
The geology and geochemistry of the Sulphurets district porphyry Au-Cu-Mo deposits, British Columbia, Canada: Insights from a long-lived, gold-enriched porphyry district

Creator:

Campbell, Michelle E.

Abstract:

Porphyry Cu-(Au-Mo) deposits are critical sources of several economically important metals. The processes governing the total metal endowment and relative proportions of ore metals at these large magmatic-hydrothermal deposits remain uncertain. The Sulphurets porphyry district, in northwestern British Columbia, Canada, contains four porphyry Au-Cu-Mo deposits that each feature distinct Cu/Au...

Resource Type:

Dissertation

Full Text:

). Additional evidence that the magmatic rocks from the oldest Kerr deposit were slightly more primitive and
The Geology and Geochemistry of the Haquira East Porphyry Copper Deposit of Southern Peru : Insights on the Timing, Temperature and Lifespan of the Magmatic-hydrothermal Alteration and Mineralization

Creator:

Cernuschi Rodilosso, Federico

Abstract:

This dissertation is informally divided into three major sections. In the first section (Chapter 2) I use data from field mapping, isotopic geochronology, whole rock geochemistry and trace element concentrations in zircons to examine the petrology, geochemistry and ages of the Haquira East porphyry copper deposit of southern Peru. In...

Resource Type:

Dissertation

Full Text:

and cathodoluminiscense imaging of rock samples. The timescales of the magmatic-hydrothermal system
Geochemical and helium isotopic variability within the Lau Basin

Creator:

Goddard, Charlotte Ives

Abstract:

This research incorporates geochemical and helium isotopic analyses of Lau Basin volcanic glasses, along with helium isotopic analyses of water column hydrothermal plumes to better understand the processes that control the formation and evolution of this backarc basin. Lavas newly collected from the four southernmost segments of the Valu Fa...

Resource Type:

Dissertation

Full Text:

geochemical signature to the south. Basalts from the VFR segments and the off-axis volcanoes are derived by
Frequency and magnitude of bedload transport downstream of the Pelton-Round Butte Dam Complex, lower Deschutes River, Oregon

Creator:

Fassnacht, Heidi

Abstract:

A first-order approximation is made of the frequency and magnitude of bedload transport downstream of the Pelton-Round Butte Dam Complex, lower Deschutes River, Oregon with implications for salmonid spawning habitat. Field measurements of channel hydraulics, geometry, and particle size were combined with one-dimensional hydraulic and bedload transport models to determine...

Resource Type:

Masters Thesis

Full Text:

from tributaries. The effects of dams on streamflow are more complex. Dams serve many purposes and
Understanding large resurgent calderas and associated magma systems : the Pastos Grandes Caldera Complex, southwest Bolivia

Creator:

Kaiser, Jason Frederick, 1985-

Abstract:

The Pastos Grandes Caldera Complex (PGCC) in southwest Bolivia has produced two large-volume (≥800 km³ DRE) dacite ignimbrites from a nested caldera source over a period of 5.5 Myr. In addition to the large-volume ignimbrites, a small-volume ignimbrite shield and post-climactic lavas define this composite system. Based on detailed field...

Resource Type:

Dissertation

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. (1990). Lead isotope provinces of the Central Andes inferred from ores and crustal rocks. Economic
A preliminary assessment of hydrogeologic suitability for Aquifer Storage and Recovery (ASR) in Oregon

Creator:

Woody, Jen

Abstract:

An ASR metric and site rating index applied to over 120 municipal and agricultural locations across Oregon, combined with comparison to case study data from existing ASR sites, indicate that more than 50% of selected sites are hydrogeologically suitable for ASR. The ASR metric is a ratio of aquifer storage...

Resource Type:

Masters Thesis

Full Text:

Wozniak of OWRD shared stacks of USGS and OWRD publications. Bill Orr of the University of Oregon
Genesis of the El Salvador porphyry copper deposit, Chile and distribution of epithermal alteration at Lassen Peak, California

Creator:

Lee, Robert G. (Robert George)

Abstract:

The El Salvador porphyry copper deposit in the Indio Muerto district of northern Chile has been geologically investigated for more than 60 years and provides one of the best bases for understanding similar environments of ore formation elsewhere in the world. Fourteen new zircon U/Pb isotopic ages obtained via in...

Resource Type:

Dissertation

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Mesozoic volcanic and sedimentary rocks of the Sierra Fraga Formation and Mantos Gruesos sequence in the

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Academic Affiliation

College of Earth, Ocean, and Atmospheric Sciences4
Geosciences4
College of Oceanic and Atmospheric Sciences2
Civil Engineering1

Advisor

de Silva, Shanaka L.2
Dilles, John H.2
Clark, Peter U.1
Goldfinger, Chris1
Graham, David W.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1998 to 2021

View distribution

Committee Member

Grunder, Anita[remove]11
Kent, Adam3
Dilles, John2
Graham, David2
Meigs, Andrew2
more Committee Members »

Creator

Campbell, Michelle E.1
Cernuschi Rodilosso, Federico1
Chaytor, Jason D.1
Fassnacht, Heidi1
Goddard, Charlotte Ives1
more Creators »

Date

Date range begin – Date range end

Current results range from 1997 to 2020

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Decade

2020-20291
2010-20195
2000-20094
1990-19991

Degree Field

Geology9
Oceanography2

Degree Level

Doctoral7
Master's4

Degree Name

Doctor of Philosophy (Ph.D.)7
Master of Science (M.S.)4

File Format

application/pdf3

Language

English [eng]11

License

All rights reserved9

Location

Oregon, Oregon, United States, (Administrative Boundary)1

Non-Academic Affiliation

Oregon State University. Graduate School9

Peer Reviewed

No10

Resource Type

Dissertation7
Masters Thesis4

Rights Statement

In Copyright10
Copyright Not Evaluated1

Subject

Amphiboles1
Aquifer storage recovery -- Oregon1
Back-arc basins -- Lau Basin1
Basins (Geology) -- Oregon -- Harney County1
Bed load -- Oregon -- Deschutes River1
more Subjects »

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