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Filtering by: Alternative title ssim Seasonality of U-37(K)' temperature estimates as inferred from sediment trap data Remove constraint Alternative title ssim: Seasonality of U-37(K)' temperature estimates as inferred from sediment trap data Committee Member Meigs, Andrew Remove constraint Committee Member: Meigs, Andrew

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Late Cenozoic Climate, Ice-sheet and Earth-surface Evolution Derived from Terrestrial and Marine Sedimentary Archives

Creator:

Bill, Nicholas S.

Abstract:

The goals of this dissertation are centered on understanding changes in Earth surface and climate systems through the use of geologic proxies as records of past changes in these systems. Specifically, this dissertation (1) establishes a new chronology for retreat of the Ross Sea sector of the West Antarctic Ice...

Resource Type:

Dissertation

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............................. 66 Figure A 1 Beryllium-10 ages from theis study as a function of boulder height ........ 91
Patterns and processes of sediment transport following sediment-filled dam removal in gravel bed rivers

Creator:

Stewart, Gregory B.

Abstract:

Dam removal is increasingly viewed as a river restoration tool because dams affect so many aspects of river hydrology, geomorphology, and ecology; but removal also has impacts. When a dam is removed, sediment accumulated over a dam’s lifetime may be transported downstream; and the timing, fate and consequences of this...

Resource Type:

Dissertation

Full Text:

regime (Grant, 2001). Dams create quiescent pools of water that trap as much as 95% of river sediment
Sediment transfer and storage in headwater basins of the Oregon Coast Range : transit times from 14C dated deposits

Creator:

Underwood, Emily F.

Abstract:

In steep headwater basins of the Oregon Coast Range (OCR), debris flows episodically deliver material from low-order tributary basins to larger catchments. Much of this material is stored in valleys and gradually removed by fluvial processes. Quantifying the transfer of material from hillslopes to mainstem channels is essential in understanding...

Resource Type:

Masters Thesis

Full Text:

Golden Ridge Creek in the central OCR. As proxies for transit-times, sixty-eight age estimates from 14C
Dynamics of the Laurentide Ice Sheet

Creator:

Carlson, Anders Eskil

Abstract:

This dissertation concentrates on the controlling factors on the instability of the Laurentide Ice Sheet (LIS) and their effects on abrupt climate change. Northern Hemisphere climate fluctuated abruptly during the last deglaciation possibly related to variability in Atlantic meridional overturning circulation (AMOC) and reduced aerial extent of the LIS. Reductions...

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Dissertation

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well as the high sediment flux rates suggested from the mass of fine-grained glacial sediment
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...

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Dissertation

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............................................................................................... 94 Table 4.1 Ti composition of quartz in veins and precipitation temperature estimates
Investigation of the hydraulic, physical, and chemical buffering capacity of Missoula Flood Deposits for water quality and supply in the Willamette Valley of Oregon

Creator:

Iverson, Justin

Abstract:

The Willamette Silt is a surficial geologic unit composed of successive Missoula Flood Deposits that underlies 3100 km2 (1200 mil) of arable land in the Willamette Valley of Oregon. The Willamette Silt protects the underlying regionally important Willamette Aquifer from agricultural contamination while acting as a semi-confining unit and a...

Resource Type:

Masters Thesis

Full Text:

buffer the WA from recent impulses of contamination. However, as older water also begins to become
Heat Flow along the Southern Costa Rica Margin : Insights on the Updip Limit of Seismicity

Creator:

Hass, Bridget M.

Abstract:

Heat flow analysis of the Costa Rica convergent margin is carried out for seven core sites drilled during Integrated Ocean Drilling Program (IODP) Expeditions 334 and 344 as part of the Costa Rica Seismogenesis Project (CRISP). These expeditions were designed to develop a better understanding of erosional subduction zones. Heat...

Resource Type:

Masters Thesis

Full Text:

temperature as a function of landward distance, x, from the deformation front and depth, z, below sea-level
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

Full Text:

Treatment of the U-Pb Data ............................................................................ 140
Spatial and Temporal Landscape Responses to Progressive Tectonic Forcing along California Fault Systems

Creator:

Manopkawee, Pichawut

Abstract:

Understanding the degree to which topography of erosional landscapes in active mountain belts encode the rates and patterns of active deformation in the upper crust is a primary goal in the field of tectonic geomorphology. In particular, the convolved influence of variations in rock mass quality and the erodibility of...

Resource Type:

Dissertation

Full Text:

(Goren et al., 2014). I use a data set of 10Be inventories from watershed sediment to estimate erosion
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:

from 40Ar/39Ar and U/Pb geochronology constrain the lifespan of the Goat Rocks volcanic complex from

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Academic Affiliation

College of Earth, Ocean, and Atmospheric Sciences6
Geosciences5
Crop and Soil Science1

Advisor

Clark, Peter U.2
de Silva, Shanaka L.1
Dilles, John H.1
Grant, Gordon1
Grunder, Anita L1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2002 to 2022

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Committee Member

Meigs, Andrew[remove]12
Grunder, Anita3
Haggerty, Roy3
Grant, Gordon2
Kent, Adam2
more Committee Members »

Creator

Bill, Nicholas S.1
Carlson, Anders Eskil1
Cernuschi Rodilosso, Federico1
Hass, Bridget M.1
Iverson, Justin1
more Creators »

Contributor

Biasi, Joseph1
Coble, Matthew1
Grunder, Anita L.1
Miggins, Daniel1
Weis, Dominique1

Date

Date range begin – Date range end

Current results range from 2002 to 2022

View distribution

Decade

2020-20292
2010-20195
2000-20095

Degree Field

Geology10
Ocean, Earth, and Atmospheric Science1
Soil Science1

Degree Level

Doctoral9
Master's3

Degree Name

Doctor of Philosophy (Ph.D.)9
Master of Science (M.S.)3

File Format

application/pdf4

Language

English [eng]12

License

All rights reserved9

Non-Academic Affiliation

Oregon State University. Graduate School10

Peer Reviewed

No11

Resource Type

Dissertation9
Masters Thesis3

Rights Statement

In Copyright11
Copyright Not Evaluated1

Subject

Archaeological geology -- Cyprus1
Boulders -- Antarctica -- Dating1
Calderas -- Bolivia1
Climatic changes -- Antarctica -- Ross Sea1
Climatic changes -- Illinois1
more Subjects »

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