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Dissertations / Theses on the topic 'Basalt – Oregon – Columbia County'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Ketrenos, Nancy Tompkins. "The stratigraphy of the Scappoose formation, the Astoria formation, and the Columbia River basalt group in northwestern Columbia County, Oregon." PDXScholar, 1986. https://pdxscholar.library.pdx.edu/open_access_etds/3632.

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The study area is located in northwestern Columbia County, and covers an area of approximately 70 square kilometers. The purpose of the study was to investigate the possible correlation of the Scappoose and Astoria Formations and determine their stratigraphic relationship to the Columbia River Basalt Group through mapping, geochemistry and petrography.

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2

Orzol, Leonard Lee. "Explosion structures in Grande Ronde basalt of the Columbia Riverbasalt group, near Troy, Oregon." PDXScholar, 1987. https://pdxscholar.library.pdx.edu/open_access_etds/3750.

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Explosion structures occur in flows of Grande Ronde Basalt in the study area near Troy, Oregon. Data from nineteen stratigraphic sites indicate that the maximum number of flows that contain explosion structures at any one site is six. In the informally named Troy flow, explosion structures are widespread.

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3

Truini, Margot. "The use of Hydrochemistry to Identify Potential Processes Operating in the Saddle Mountains Basalt Aquifer and the use of the Nitrate-nitrogen Isotope to Distinguish between Potential Sources of Nitrate to the Shallow Alluvial Aquifer in the Lower Umatilla Basin, Oregon." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/5206.

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Nitrate concentration in excess of national drinking-water standards (10 mg/l) are present in the shallow alluvial aquifer and Saddle Mountains Basalt (SMB) aquifer in the Lower Umatilla Basin, Oregon. To determine sources responsible for elevated nitrate concentrations in the SMB aquifer mass-balance and reaction-path models (NETPATH and PHREEQE) were used to understand observed geochemical trends. Nitrate-nitrogen isotopes were used to distinguish potential nitrate sources in the shallow alluvial aquifer. NETPATH-validated simple water/rock reactions in the SMB aquifers in Irrigon (dissolvin

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4

Wagner, Derrick Lee. "Hydrogeologic Characterization of Dutch Canyon, Scappoose, Oregon." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1020.

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Dutch Canyon is located directly west of the City of Scappoose in Columbia County Oregon. This area is proximate to Highway 30, a major access corridor to downtown Portland, and is experiencing a population increase, which is expected to continue and likely accelerate. As a result, there is growing pressure on water resources. Individual and community efforts to utilize groundwater resources have been hampered by generally poor groundwater yields and water quality concerns outside of the Columbia River corridor and a lack of published hydrogeologic information for the region. The intent of thi

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5

Burck, Martin S. "The stratigraphy and structure of the Columbia River basalt group in the Salmon River area, Oregon." PDXScholar, 1986. https://pdxscholar.library.pdx.edu/open_access_etds/3583.

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Approximately 16 square km of Columbia River basalt are exposed in the Salmon River area to the south and to the west of Mount Hood, Oregon. A maximum composite basalt section composed of 15 flows and totaling 461 m is exposed in discontinuous areas of outcrop.

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6

Gless, James Douglas. "Slope stability as related to geology at Rainier, Columbia County, Oregon." PDXScholar, 1989. https://pdxscholar.library.pdx.edu/open_access_etds/3985.

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Rainier, Oregon, has experienced problems in the development of residential and commercial sites, utilities, and transportation facilities as a result of slope instability. This study of slope stability at Rainier was conducted at the request of city officials.

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7

Smith, Cameron McPherson. "Social Stratification within a Protohistoric Plankhouse of the Pacific Northwest Coast: Use-wear and Spatial Distribution Analysis of Chipped Lithic Artifacts." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/5139.

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The spatial distribution of chipped lithic artifacts excavated at site 35C05, a Chinookan plankhouse of the protohistoric period, was observed to test the hypothesis that a gradient of material culture -- reflecting social status -- should be evident within the plankhouse, ranging from the highest to the lowest social rank. Prior to the spatial analysis, use-wear analysis was used to evaluate the classificatory labels used to describe the assemblage by a previous researcher. The use-wear analysis largely confirmed the functional classification of chipped lithic artifacts used by the previous r

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8

Fassio, Joseph Michael. "Geochemical Evolution of Ferruginous Bauxite Deposits in Northwestern Oregon and Southwestern Washington." PDXScholar, 1990. https://pdxscholar.library.pdx.edu/open_access_etds/3821.

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Ferruginous bauxite deposits developed from flows of the Columbia River Basalt Group in northwestern Oregon and southwestern Washington. Samples of the iron pisolite and the gibbsite nodular zones from the upper portion of the weathering profile of drill core from Columbia County, Oregon and Cowlitz County, Washington, were analyzed by instrumental neutron activation. The mineralogy was determined using Xray diffraction and Mossbauer spectroscopy. The gibbsite nodular zone is above the clay-rich saprolite or relic basalt zone. The nodules contain relic vesicles and well preserved relic plagioc

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9

Wolf, John William. "The Spatial Distribution of Ground Stone Tools as a Marker of Status Differentials in a Chinookan Plank House on the Lower Columbia River." PDXScholar, 1994. https://pdxscholar.library.pdx.edu/open_access_etds/2898.

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Social status was an integral part of the social structure of Northwest Coast societies. The presence of ranked social structures and household space based on rank is reported in the ethnographic literature. Archaeologists have long searched for independent and verifiable means to infer social structure from archaeological deposits. Burial goods have been used to identify status differences. Do other items of material culture also reflect such differences? The purpose of this study was to ascertain whether or not the distribution of certain tools recovered from a Chinookan plank house on the l

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10

Large, Adam M. "Silicic Volcanism at the Northern and Western Extent of the Columbia River Basalt Rhyolite Flare-up: Rhyolites of Buchanan Volcanic Complex and Dooley Mountain Volcanic Complex, Oregon." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/3122.

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Two mid-Miocene (16.5-15 Ma) rhyolite volcanic centers in eastern Oregon, the Buchanan rhyolite complex and Dooley Mountain rhyolite complex, were investigated to characterize eruptive units through field and laboratory analysis. Results of petrographic and geochemical analysis add to field observations to differentiate and discriminate the eruptive units. Additionally, new geochemical data are used to correlate stratigraphically younger and older basalt and ash-flow tuff units with regional eruptive units to constrain the eruptive periods with modern Ar-Ar age dates. Previous work at the Buch

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11

Hamilton, Stephen Coursault. "Technological Organization and Sedentism: Expedient Core Reduction, Stockpiling, and Tool Curation at the Meier Site (35CO5)." PDXScholar, 1994. https://pdxscholar.library.pdx.edu/open_access_etds/4839.

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The Meier site fine-grained lithic assemblage was used to test the hypothesis that a sedentary group will rely heavily on expedient lithic technologies because they stockpile raw material at the residence. At Meier, expedient core reduction provided blanks for a significant number of curated and expedient tools. I propose that sedentism (stockpiling) minimizes energy investments in raw material procurement and blank production while maintaining the ability to efficiently make both curated and expedient tools. Investment in curation is limited to a few tool classes with specialized functions, n

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12

Townley, Paul Joseph. "Preliminary investigation for underground storage of pipeline gas in the Bruer and Flora pools, Mist gas field, Columbia County, Oregon." PDXScholar, 1985. https://pdxscholar.library.pdx.edu/open_access_etds/3542.

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Northwest Natural Gas Canpany has proposed to convert the Bruer and Flora pools of the Mist Gas Field in west-central Columbia County, Northwestern Oregon, to pipeline gas storage reservoirs. Conversion to underground storage of pipeline gas in these depleted gas reservoirs would be the first in the Pacific Northwest. The Bruer and Flora Pools are fault trapped within the Cowlitz Formation. The shales overlying the Cowlitz Formation create a local seal for these gas reservoirs. X-ray diffraction and density log measurements suggest that the clay in these shales is primarily composed of smectit

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13

Endzweig, Pamela. "Late archaic variability and change on the southern Columbia plateau : archaeological investigations in the Pine Creek drainage of the Middle John Day River, Wheeler County, Oregon." Thesis, University of Oregon, 1994. http://hdl.handle.net/1794/10730.

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2 v. (xxiii, 627 p.): ill., maps. A print copy of this title is available through the UO Libraries under the call number: KNIGHT E78.O6 E53 1994<br>A major concern of Columbia Plateau archaeology has been the development of the ethnographic "Plateau pattern." Observed during historic times, this lifeway focused on permanent riverine winter villages and intensive use of anadromous fish, with ephemeral use of interior tributaries and uplands for hunting and root gathering. Constrained by a salvage-driven orientation, past archaeological research on the Plateau has been biased towards majo

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14

Farr, Leonard Carl Jr. "Stratigraphy, diagenesis, and depositional environment of the Cowlitz Formation (Eocene), northwest Oregon." PDXScholar, 1989. https://pdxscholar.library.pdx.edu/open_access_etds/3905.

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The Upper Eocene Cowlitz Formation is exposed in surface outcrops southwest of the town of Vernonia, in Columbia County, Oregon. The Cowlitz Formation also occurs in the subsurface of the Mist gas field where its Clark and Wilson (C and W) sandstone member (informal) acts as a natural gas reservoir, and its upper Cowlitz mudstone member (informal) acts as a cap rock. Surface exposures and continuous core were studied in order to determine Cowlitz Formation stratigraphy, and its depositional environment. Fresh core samples were also studied petrographically, and with a scanning electron microsc

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15

Seaton, Anne. "Historic Structures Report: Lone Pine Indian Shaker Village, a Nineteenth Century Fishing Settlement in The Dalles, Wasco County, Oregon." Thesis, University of Oregon, 1996. http://hdl.handle.net/1794/24503.

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155 p.<br>Lone Pine Indian Shaker Village, located in The Dalles, Oregon, is the last remaining example of a late nineteenth century fishing settlement, a resource type that once proliferated along the banks of the Columbia River. Lone Pine Indian Shaker Village is also significant for its association with mixed heritage settlement, Native American fishing traditions, and the Indian Shaker Religion, a religion unique to the Northwest. This is an historical and architectural study of the village which includes the historical context and detailed description of the built environment, as it exist

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16

Stormberg, Gregory J. "The Mist gas field, N.W. Oregon : source rock characterization and stable isotope (C,H,N) geochemistry." Thesis, 1991. http://hdl.handle.net/1957/37386.

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17

Berkman, Thomas Anthony. "Surface-subsurface geology of the middle to upper Eocene sedimentary and volcanic rock units, western Columbia County, northwest Oregon /." 1990. http://hdl.handle.net/1957/9481.

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Thesis (M.S.)--Oregon State University, 1990.<br>Typescript (photocopy). Includes mounted photographs. Includes folded plates in pocket. Includes bibliographical references (leaves 377-396). Also available via the World Wide Web.

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