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...
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...
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...
Paleozoic dolomites, limestones, and detrital clastic rocks
were mapped in the Bellevue Peak 15 minute quadrangle in the
southern Mahogany Hills, Nevada. Sedimentary rock units in this
area represent shallow-shelf eastern assemblage deposits.
Shallow-shelf carbonates characterized deposition from at
least Ordovician through Late Devonian time, when clastics derived
from the...
Surface and subsurface mapping are combined to determine the
geologic history along the San Gabriel fault near the town of Castaic.
Palomas Gneiss, Whitaker Granodiorite, and Pelona Schist are basement
terranes encountered in the subsurface. West of the San
Gabriel fault, basement is unconformably overlain by marine middle
to late...
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...
We present velocity observations from a shipboard acoustic Doppler current profiler (ADCP) on
R/V Wecoma during cruise W0108a (6-25 August 2001). The cruise was a component (Survey
II) of the Coastal Ocean Advances in Shelf Transport (COAST) experiment. The ADCP was an
RD Instruments hull-mounted 153-kHz narrowband unit. Data were...
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...
A thick sequence of intercalated andesite and basalt flows, tuffs, and volcanic sediments crop out in the Fly Creek Quadrangle and the north half of the Round Butte Dam Quadrangle. This sequence was deposited in the ancestral Deschutes River Valley along the east flank of the Cascade Range during the...
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...
Lipid biomarkers in sediments are widely used to infer environmental conditions that have
occurred in the geological past, but these reconstructions require a careful consideration of the
biotic and abiotic processes that degrade and alter the lipid biomarker compositions before
and after deposition. In this paper, we use alkenones produced...
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...
Presentation about the OSU Oregon Multicultural Archives' Latino/a community oral history project, "Latinos en Oregón: sus voces, sus historias, su herencia" and specifically stories of migration and settlement of members of the Latino/a community in Madras, Oregon, given at the Oregon Migrations Symposium on November 17, 2016.
Fossil foraminifers from the Coaledo and Bastendorff Formations
near Coos Bay in southwestern Oregon were studied in an attempt
to determine the age and environment of deposition. Fresh unweathered
samples were collected from sea cliffs between Cape
Arago and Charleston, Oregon.
A large late Eocene delta is preserved in 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...
Jurassic rocks exposed in the Buckskin Range of the Yerington district,
represent the upper 1 to 2 km of a large magmatic-hydrothermal system with
porphyry copper deposits at 1-4 km depth. These rocks include, from deep to
shallow, the Yerington batholith, the Artesia Lake Volcanics (intruded by the
batholith), and...
The early to middle Eocene submarine basalts of the Crescent Formation form the
core and basement of the structurally uplifted Willapa Hills region of southwest
Washington. The formation consists of a thick sequence of predominantly subalkaline,
tholeiitic pillow basalts and breccias formed as oceanic crust and seamounts at a sea...
Support Vector Machines (SVM) and Random Forests (RF) have
consistently outperformed other machine learning algorithms on a variety of
problems. SVM can be used for classification and regression on many types of
data (e.g. nonlinear, high dimensional), but cannot handle missing or mixed data.
This research implements a permutation-based variable...
Paleozoic dolomites, limestones, and detrital clastic rocks
were mapped in the Bellevue Peak 15 minute quadrangle in the
southern Mahogany Hills, Nevada. Sedimentary rock units in this
area represent shallow-shelf eastern assemblage deposits.
Shallow-shelf carbonates characterized deposition from at
least Ordovician through Late Devonian time, when clastics derived
from the...
With the growing trend in use of 3D laser scanning technology for data collection, it is important to study the various potential applications of this revolutionary technology. One such application is the measurement of road roughness at both large and small scales. At larger extents, terrestrial laser scanning (TLS) is...
Six Tertiary units are exposed in the Onion Peak area near the town of Cannon Beach., Oregon. The units consist of: late Eocene to
early Miocene Oswald West mudstones (informal), middle Miocene Astoria Formation (Angora Peak sandstone and Silver Point mudstone members.-informal), middle Miocene basalts of intrusive and extrusive Depoe...
This project hypothesizes that the use of multiple ground-based remote sensing methods can collectively characterize the geophysical signatures of four marked human burials at the Confederated Tribes of Siletz Indians historic period cemetery. If the geophysical signatures of the marked burials can be characterized, these signatures may be used to...
Effective conservation of the greater sage-grouse and its habitat requires a collaborative, landscape-scale, science-based approach that includes strong federal plans, a strong commitment to conservation on state and private lands, and a proactive strategy to reduce the risk of rangeland fires.
Since public lands make up roughly half of the...