The thesis area is located in north-central Oregon approximately 20 km west of the town of Mitchell. The rocks exposed in the area belong to the Clarno Formation. This study supports the informal reclassification of the Clarno to Group status, composed of an Upper and Lower Clarno Formation. An angular...
The North Unit irrigation District of Central Oregon,
a water project developed under the guidelines of the
Bureau of Reclamation, is characterized by limited water
and the need for efficient utilization and control of the
irrigation system. To manage the limited water resource,
irrigators need a timely and economical method...
Volcan Aucanquilcha, a Pleistocene to Recent composite volcano in northern Chile, is the
youngest and center-most member of the 11 m.y.-old Aucanquilcha Volcanic Cluster (AVC). The
AVC has produced [approximately]350 km³ of lava over its history. Magmatism started slowly and was punctuated
by high rates of eruption between 4.5 and...
How does transboundary water cooperation begin at the initial stages? Countries in many transboundary basins either do not cooperate at all or have ceased cooperation altogether. Yet cooperation does often prevail, resulting in 688 water-related treaties signed between 1820 and 2007. The question we address here is, by which practices...
Paleozoic limestones, dolomites, quartz arenites, and other
clastic rocks were mapped in the vicinity of Dobbin Summit and
Clear Creek in the central Monitor Range. Sedimentary rock units
present in this area represent the shallow-shelf eastern assemblage
and basin and also the basin-slope facies of the traditional limestoneclastic
assemblage.
The...
The Summer Coon intrusive center is located seven miles
north of Del Norte, Colorado, on the eastern edge of the San Juan
Mountains. The intrusive center is the core of a dissected calcalkaline
composite volcano of middle Oligocene age. The Summer
Coon rocks belong to the Conejos Formation which is...
Devonian carbonate rocks of the southern Hot Creek Range reflect a shift to the east of the carbonate shelf edge and a progressively deeper-water lithotope from late
Early Devonian to early Middle Devonian time. Lower Devonian mudstones of the McColley Canyon Formation were deposited on an open shelf, dolomitized, and...
The Murderers Creek Area, within the Aldrich Mountain province of
northeast Oregon, originated in an arc-trench gap during Permian-early
Triassic time. The area represents a small portion of a forearc
depositional basin and tectonic highland which borders the basin along
its seaward margin. The trench associated with an east dipping...
The Willamette Valley of Oregon has high rates of winter precipitation that cause
leaching losses of residual fertilizer nitrogen (N) as nitrate (NO₃). Cover crops may have
potential to mitigate N loss. Shallow groundwater was sampled for 11 years from plots
planted in summer vegetables with and without winter cover...
Clastic sedimentary rocks of the Nanaimo Group on Saltspring Island, British Columbia are Late Cretaceous in age, overlie a deformed and intruded Paleozoic basement complex, and consist of
eight formations. These eight formations, from oldest to youngest, are the Comox, Haslam, Extension-Protection, Cedar District, De Courcy, Northumberland, Geoffrey, and Spray...
Oregon’s High Lava Plains Province (HLP) has strongly bimodal basalt and rhyolitic volcanism. The Province caps the northern margin of the Basin and Range Province and serves as a transitional region between westward extension of the Basin and Range Province and unextended crust to the north . The High Lava...
The Grant Range, in east-central Nevada, is a
north-east trending range bounded on the west by a
west-dipping normal fault system. Rocks within the range
record a complex polyphase Mesozoic ductile
compressional and Cenozoic brittle extensional
deformational history. The northwestern Grant Range
exposes deformed, regionally metamorphosed and
unmetamorphosed, Cambrian to...
Purpose – The purpose of this article is to communicate how an academic library can establish and implement a realignment process to prepare itself to serve users in the 21st century.
Design/methodology/approach – The authors employed a case study approach to present the challenges of realigning an academic library. They...
We know students use mobile technologies. We expect they will want to use them more. The mobile landscape is changing fast. But what does this actually mean? How does having constant access affect the ways students use information? This is one of the questions librarians at Oregon State University are...
Discusses the ease and usefulness of conducting usability studies and provides an example of usability testing at Oregon State University undertaken to improve the DSpace Electronic Thesis/Dissertation (ET/D) submission process.
This set of presentations was used in July-August, 2007, to train staff at Oregon State University in the application of the Library of Congress Classification system and related shelflisting practices. The presentations cover basic notation, cuttering, geographic cutters, special formats such as continuing resources, congresses, and biographies, and many other...
Accurate chromosome segregation and cell cleavage are critical to maintaining genomic integrity. Both events involve the spindle apparatus, but the exact mechanics is as puzzling as the contradicting models proposed in the last two centuries. In this dissertation, current prevailing models of chromosome segregation and cell cleavage are tested using...
The Yanacocha Mining District in northern Perú is considered the largest group of
high-sulfidation style epithermal gold deposits in the world. District-scale geologic mapping coupled with detailed 40Ar/39Ar geochronology, geochemistry and petrography establish the volcanic history of the area and analyze the temporal and spatial evolution of volcanism, hypogene advanced...
The Bethlehem Copper Mine, a porphyry copper deposit, is
situated near the geographical center of the Guichon Creek batholith.
The Guichon Creek batholith is located on the east flank of the
Canadian Coast Range in south central British Columbia approximately
250 miles northeast of Vancouver, B. C. The batholith
trends...
The northwest-trending Neogene Tualatin basin in northwestern Oregon is a pull-apart
basin with approximately 750 m of post-middle Miocene structural relief. Gently
tilted uplands capped by Columbia River Basalt Group surround the synclinal basin on all
sides. Integrated gravity, aeromagnetic, and seismic reflection data indicated that the
basin is underlain...
After the April 2010 explosion on the Deepwater Horizon oil rig, and subsequent release of millions of barrels of oil, two Corexit oil dispersant formulations were used in unprecedented quantities both on the surface and sub-surface of the Gulf of Mexico. Although the dispersant formulations contain four classes of surfactants,...
Surface and subsurface mapping are combined to determine the structure and geologic history of the eastern
half of the Simi fault in the Simi Valley area. Upper Cretaceous rocks exposed south and east of the Simi Valley are overlain unconformably by the nonmarine Simi Conglomerate of Paleocene age. The Marine...
Devonian carbonate rocks of the southern Hot Creek Range reflect a shift to the east of the carbonate shelf edge and a progressively deeper-water lithotope from late
Early Devonian to early Middle Devonian time. Lower Devonian mudstones of the McColley Canyon Formation were deposited on an open shelf, dolomitized, and...
Surface and subsurface data indicate that Cretaceous strata
in the southern Ventura basin are part of the northward prograding
Chatsworth submarine fan. The fan extends westward as far as
Trancas Beach in the Santa Monica Mountains and wells in the
Oxnard Plain and on Oak Ridge. The eastern edge of...
This study describes the surface configuration of
Goodhue County and attempts to determine the origin of that
configuration. The research has a descriptive portion--an
objective examination of land surface configuration and the
composition and distribution of rock material underlying
that surface, and a theoretical portion--a speculative
examination of the factors...
As editors of the Marine Science and Technology section for the last three editions of Magazines for Libraries (MFL), we developed lists of journals and annotations to help guide marine sciences acquisitions for all types of libraries. We recommended essential titles at the same time we needed to cancel some...
Stratigraphic measurement of the 1,238-rn thick Cowlitz Formation in the
southwest Washington type section along Olequa and Stillwater creeks reveals complex
facies succession of wave- to tide-dominated deltaic sequences. The underlying, 625-rn
thick upper member of the McIntosh Formation (as mapped by Wells, 1981) is composed
of two units: a...
This thesis is an effort to formalize and document some of the changes occuring in the Warwar Valley of Gongola State, Nigeria, West Africa. The documentation will comprise a photographic study over time accompanied by an ethnographic narrative. Information gathered from photographic images, field notes and the anthropological record will...
Surface and subsurface data are combined to determine the structure of the western half of the Simi fault system in the Las Posas and Camarillo Hills area. Cretaceous to Eocene sedimentary rocks, present only in the subsurface, are overlain by late Eocene to early Miocene nonmarine stata (Sespe Formation) and...
A land management scheduling model is developed that uses a Tabu search procedure to schedule timber harvests and road management activities, while simultaneously meeting (over time and space) two aquatic goals, and also providing for an even-flow of timber harvest volume. Decision variables include land units and roads, and they...
Floods and ensuing damage have always been a problem for man.
Initial reaction to the frequent destruction was to avoid siting
permanent domiciles on flood-prone lands. As a result of increasing
population and pressure for development, flood control structures
were built. Instead of reducing flood losses, however, flood control
projects...
The Santa Barbara-Montecito and Goleta basins are structurally
continuous fault-controlled Pleistocene basins containing
up to 3000 feet (925 m) of marine Pleistocene Santa Barbara Formation
which were deposited on previously deformed Sisquoc and older
strata. Structures subcropping against the unconformity at the
base of the Santa Barbara Formation show that...
This thesis is an effort to formalize and document some of the changes occuring in the Warwar Valley of Gongola State, Nigeria, West Africa. The documentation will comprise a photographic study over time accompanied by an ethnographic narrative. Information gathered from photographic images, field notes and the anthropological record will...
Corvallis has been growing steadily in terms of
population and functions of the city while the biotic resources
of the immediate environs have declined. This
study sought to examine land use changes of North Corvallis
rural-urban fringe area between 1963 and 1978 by interpreting
the changes from aerial photographs. The...
The spatial distribution and geologic histories of submarine volcanoes provide insight into submarine eruptive behavior, deep earth processes and plate tectonics. This dissertation examines the evolution of individual submarine volcanic edifices as well as linear trails of seamounts at three spatial and temporal scales.
In order to understand constructive and...
Distributed deformation in the backarc of Cascadia is complex. Off the west
coast lies the Cascadia convergent margin. East of the plate boundary,
clockwise rotation of the Oregon Coast Range block with respect to stable
North America influences backarc deformation, causing extensional faults in
southeast Oregon, contraction folding in southeast...
This study utilizes a multidisciplinary research approach integrating the sciences of archaeology, geology, pedology and paleoclimatology. Deeply stratified and radiocarbon dated sedimentary sequences spanning the last 10,000 yr B.P. are reported for the Cremer site (24SW264), south-central Montana. Previous investigations at the site revealed an archaeological assemblage with Early Plains...
A method was developed to formulate and solve a fifty-year tactical harvest scheduling problem that included spatial wildlife habitat goals and constraints for a 4800-acre watershed in Northwestern Oregon under four scenarios. Three goals and two habitat constraints were included in each scenario. The first goal was a volume goal....
Obtaining accurate estimates of animal abundance is made difficult by the fact that most
animal species are detected imperfectly. Early attempts at building likelihood models that
account for unknown detection probability impose a simplifying assumption unrealistic for
many populations, however: no births, deaths, migration or emigration can occur in the...
A change to a warmer, drier climate beginning as early as 1900 was responsible
for triggering a dramatic, rapid retreat of Collier Glacier, Oregon, between 1924 and
1940. Although there was a dramatic decrease in precipitation contemporaneous with this observed "step-function" response of mass loss, it is unclear if climate...
Metro received grant funding from the U.S. Environmental Protection Agency in 1995 to gather digital, or computerized, geographic data for the Clackamas River watershed. This atlas was produced as one way to share the information collected with resource managers, policy makers, and people living in and interested in the Clackamas...
The impact of recent severe droughts throughout the United States, the potential for climate change to intensify the frequency and severity of drought, and discussion about the future of government assistance in agriculture highlight the need for a transition from drought as ‘disaster’ to drought as ‘managed risk’. However, guidance...
A compact, low-cost, wireless gamma-ray spectrometer is a tool sought by a number of different organizations in the field of radiation detection. Such a device has applications in emergency response, battlefield assessment, and personal dosimetry. A prototype device fitting this description has been constructed in the Advanced Radiation Instrumentation Laboratory...
More than 200 sites between 500 and 2000 meters elevation
were examined utilizing a reconnaissance sampling technique for a
portion of the eastern slopes of the northern Oregon Cascade Mountains.
Twelve different forested plant communities were described
with data on vegetation, soils and topography. A map of their distribution
and...
The Coyote Hills are located about 46 kilometers north-northwest
of Lakeview, Oregon, within the Basin and Range physiographic province.
These hills represent a complex volcanic center of bimodal
calc-alkaline igneous activity.
The oldest rocks recorded in the Tertiary succession are horn-blende-
bearing andesite and aphanitic basalt flows, laharic breccias,
conglomerates,...
The schist of Skookum Gulch (SSG) is an informal name applied to
a fault-bounded melange composed mainly of schistose metamorphic
rocks and less abundant sedimentary and igneous rocks located in the
eastern Klamath Mountains of northern California. The SSG features
outcrops of lawsonite+sodic amphibole blueschist and epidote+sodic
amphibole rocks transitional...
This study describes the surface configuration of
Goodhue County and attempts to determine the origin of that
configuration. The research has a descriptive portion--an
objective examination of land surface configuration and the
composition and distribution of rock material underlying
that surface, and a theoretical portion--a speculative
examination of the factors...
The Pleistocene Carpinteria basin is an east-trending
northward-verging, faulted syncline containing up to
1220m of partially intertonguing Santa Barbara and
Casitas Formations deposited on previously folded pre-
Pleistocene strata with up to 80° discordance. Structures
subcropping against the unconformity indicate most
of the deformation in the Santa Ynez Range prior...
Surface and subsurface data are combined to determine the structure of the western half of the Simi fault system in the Las Posas and Camarillo Hills area. Cretaceous to Eocene sedimentary rocks, present only in the subsurface, are overlain by late Eocene to early Miocene nonmarine stata (Sespe Formation) and...
The thermodynamic history of the Earth is preserved in the trace element record created through igneous processes. The ability to interpret that record depends on the accuracy and precision of numerical models that connect igneous processes with their geochemical consequences. This project answers three major questions concerning the relationship between...
The Russell Ranch oil field is located in the southern Coast
Ranges west of Bakersfield, California. Detailed subsurface
mapping shows that a northwest-oriented right-lateral wrench-fault
system was active from possibly latest Oligocene to Pliocene time.
The effects of Quaternary thrusting were superimposed on, and influenced
by, structures associated with the...
Archaeological investigations at the Cooper's Ferry site in Western Idaho have recovered cultural remains dating to 16,000 years ago, suggesting the oldest human occupation recorded in North America. However, many archaeologists have argued the initial peopling of North America occurred no earlier than the opening of an ice-free corridor between...
The Ventura basin is an elongate sedimentary trough extending from the San Gabriel fault west into the Santa
Barbara Channel. West of Ventura it contains over 4 km of severely deformed Pliocene and Pleistocene clastic
strata. The north-dipping Red Mountain reverse fault system, which forms the northern boundary of the...
This thesis is an effort to formalize and document some of the changes occuring in the Warwar Valley of Gongola State, Nigeria, West Africa. The documentation will comprise a photographic study over time accompanied by an ethnographic narrative. Information gathered from photographic images, field notes and the anthropological record will...
Articulate brachiopod communities sensitive to environmental factors, especially depth and distance from shore, are described from the upper Middle Devonian (upper Eifelian and Givetian; Cazenovia, Tioughnioga, and Taghanic stages of eastern North America) of eastern North America. The Subrensselandia, Cupularostrum, Mediospirifer, Tropidoleptus, Devonochonetes, Mucrospirifer, Atrypid-Strophodontid, Ambocoeliid, Pacificocoelia, Truncalosia, and Camarotoechia...
The spatial distribution and geologic histories of submarine volcanoes provide insight into submarine eruptive behavior, deep earth processes and plate tectonics. This dissertation examines the evolution of individual submarine volcanic edifices as well as linear trails of seamounts at three spatial and temporal scales.
In order to understand constructive and...
The Duzel Rock area includes four square miles in the eastern
Paleozoic subprovince of the Klamath Mountains southeast of Fort
Jones, California. The structurally complex terraine is composed
of Silurian graywacke, post-Silurian phyllite, limestone and basalt
associations, and minor andesitic intrusive rocks.
Three groups of sedimentary and extrusive rocks have...
Detailed geologic mapping in the Mormon Mountains and
new geophysical data provide significant insight into
contractional and extensional tectonics in southern Nevada,
southwest Utah, and northwest Arizona. The rocks in the
region were complexly deformed during two distinct tectonic
episodes. Numerous interrelated events occurred within each
episode. The first tectonic...
Educators and other individuals within the long term care continuum along
with current gerontological researchers call for consideration of quality of life
factors related to aging. Optimal aging applies to physical health, as well as
cognitive and socio-emotional health. Each is imperative to a quality of life,
specifically in long...
Program description: Do users want simpler access to "best sources" for subject research? Should libraries filter information by discipline, subject area or course? Should information be tailored to undergraduate level? This presentation will present findings from research on these and other questions.
This study demonstrates the utility of combining available scientific data with local ecological knowledge in a Geographic Information System (GIS) to support
community-based fisheries management. The approach used provides both the framework for capturing important ecological, economic and social information relevant to marine fisheries management, and also offers coastal citizens...
This study demonstrates the utility of combining available scientific data with local ecological knowledge in a Geographic Information System (GIS) to support
community-based fisheries management. The approach used provides both the framework for capturing important ecological, economic and social information relevant to marine fisheries management, and also offers coastal citizens...
Presentation about the Oregon Tribal Archives Institute given at the 2013 Association of Tribal Archives, Libraries, and Museums Conference in Albuquerque, New Mexico.
Presentation as part of the "Archives Summit: Protocols for Native American Archival Materials" at the 2015 International Conference of Indigenous Archives, Libraries, and Museums conference hosted by the Association for Tribal Archives, Libraries, and Museums in Washington DC, September 9, 2015.
We present velocity observations from a shipboard acoustic Doppler current profiler (ADCP) on
R/V Wecoma during cruise W0301b (19 January - 3 February 2003). The cruise was a component
(Survey III) of the Coastal Ocean Advances in Shelf Transport (COAST) experiment. The
ADCP was an RD Instruments hull-mounted 153-kHz narrowband...
While bubble plumes have been acoustically imaged in the water column above marine gas
hydrate deposits in many studies, little is known about the temporal variation in plume intensity. In
July 2008, we conducted surveys using 3.5 and 12 kHz echosounders and a 75 kHz acoustic Doppler
current profiler (ADCP)...
Epidemiological studies on Greenland Inuits in the 1970s and subsequent human studies have established an inverse relationship between the ingestion of omega-3 fatty acids [C₂₀₋₂₂ ω3 polyunsaturated fatty acids (PUFA)], blood levels of C₂₀₋₂₂ ω3 PUFA and mortality associated with cardiovascular disease [CVD]. C₂₀₋₂₂ ω3 PUFA have pleiotropic effects on...