Relevant bibliographies by topics / Geochemistry – Oregon – Columbia County

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Academic literature on the topic 'Geochemistry – Oregon – Columbia County'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Geochemistry – Oregon – Columbia County"

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Howard, Donald G. "Filiform ilmenite crystals from Lemolo Lake, Douglas County, Oregon." Neues Jahrbuch für Mineralogie - Abhandlungen 187, no. 1 (March 1, 2010): 97–99. http://dx.doi.org/10.1127/0077-7757/2010/0163.

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Miller, Brian M., Robert J. Aitken, Michael J. Oldham, and Anton A. Reznicek. "Slender False Brome (Brachypodium sylvaticum, Poaceae), an Invasive Grass New to Ontario, Canada." Canadian Field-Naturalist 125, no. 3 (July 1, 2011): 235. http://dx.doi.org/10.22621/cfn.v125i3.1226.

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Brachypodium sylvaticum, Slender False Brome, an invasive Eurasian grass, is reported for the first time in Ontario and eastern Canada from Grey County, southern Ontario. The only previous Canadian record is from Vancouver Island, British Columbia. The species is widespread in the U.S. Pacific Northwest, where it is spreading aggressively throughout much of western Oregon. In the eastern U.S.A., known populations are few and localized, although the species will likely spread.
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Steenland, N. C. "On: “A Case Study of Integrated Hydrocarbon Exploration Through Basalt,” by Robert Withers, Dwight Eggers, Thomas Fox, and Terry Crebs (November 1994 GEOPHYSICS 59, p 1666–1679)." GEOPHYSICS 61, no. 3 (May 1996): 914. http://dx.doi.org/10.1190/1.1444016.

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This paper describes geophysical exploration in northern Oregon, an area covered by the Columbia River Basalt Group (CRBG) on the surface. Obtaining geophysical results through these basalts is a major problem. Magnetic, gravity, seismic, MT and subsurface data are utilized.
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Goulet, Henri. "The Genera and Species of the Nearctic Dolerini (Symphyta: Tenthredinidae: Selandriinae): Classification and Phylogeny." Memoirs of the Entomological Society of Canada 118, S135 (1986): 5–208. http://dx.doi.org/10.4039/entm118135fv.

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AbstractThe Dolerini consist of two genera (Dolerus Panzer and Prionourgus Goulet). Prionourgus consists of one species. Dolerus is subdivided into one species group and seven subgenera (nitens group, Neodolerus Goulet, Achaetoprion Goulet, Oncodolerus Goulet, Loderus Konow, Dicrodolerus Goulet, Dolerus s. str. Panzer, and Dosytheus Leach), and consists of 72 Nearctic species.Described as new are one genus [Prionourgus (type species: Dolerus salmani Ross)], four subgenera [Neodolerus (type species: Dolerus sericeus Say), Achaetoprion (type species: Dosytheus maculicollis Norton), Dicrodolerus (type species: Dosytheus apricus Norton), and Oncodolerus (type species: Loderus acidus MacGillivray)], 23 species [Dolerus abstrusus (type locality: Moose Factory, Ontario), Dolerus acer (type locality: Merritt Creek, Klamath County, Oregon), Dolerus aeneiceps (type locality: Robson, British Columbia), Dolerus alutaceus (type locality: Seymour, Illinois), Dolerus californicus (type locality: 1 mi. E Emigrant Gap, Placer County, California), Dolerus columbianus (type locality: Robson, British Columbia), Dolerus comatus (type locality: Pullman, Washington), Dolerus crinitus (type locality: Forestville, California), Dolerus decussatus (type locality: Chaffeys Locks, Ontario), Dolerusfaber (type locality, 25.5 mi. W Lakeview, Oregon), Dolerusfalcatus (type locality: Cheltenham, Pennsylvania), Dolerus fulgens (type locality: Huntingdon, Pennsylvania), Dolerus hebes (type locality: Marmora, Ontario), Dolerus incisus (type locality: Reindeer Depot, Northwest Territories), Dolerus inermis (type locality: Moscow, Idaho), Dolerus interior (type locality: Pullman, Washington), Dolerus laevis (type locality: Glacier Point, Yosemite National Park, California), Dolerus maritimus (type locality: Chase Lake, Snohomish County, Washington), Dolerus mimus (type locality: Gatineau Park, Quebec), Dolerus recurvans (type locality: Strawberry, California), Dolerus rossi (type locality: Fredericton, New Brunswick), Dolerus tacoma (type locality: Mount Rainier, Washington), and Dolerus urustus (type locality: Tuscarora, Nevada)], and two subspecies [Dolerus elderi pacificus (type locality: Sumas Prairie, British Columbia) and Dolerus konowi glacialis (type locality: Yakutat, Alaska)]. A new name, Dolerus sayi, is proposed for D. collaris Say, a junior secondary homonym.Treatment of each taxon includes synonymic list, diagnostic combination, descriptions, taxonomic notes, origin of new epithet, host and/or habitat, geographic distribution, and notes on affinities. In addition, under each species there is a discussion of geographical variation. Important character states are illustrated and geographical distribution is mapped for all species. Relationships between species of Dolerini are reconstructed from the analysis of structural characters using principles of cladistic systematics. Finally a classification is proposed for higher taxa of the Dolerini based on the reconstructed phylogeny.
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Howard, Donald G., and Kent England. "New types of twinning in enstatite and pseudobrookite from Lemolo Lake, Douglas County, Oregon, USA." Neues Jahrbuch für Mineralogie - Abhandlungen 187, no. 1 (March 1, 2010): 91–95. http://dx.doi.org/10.1127/0077-7757/2010/0164.

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Baker, Diana, Curt Peterson, Eileen Hemphill-Haley, and David Twichell. "Latest Pleistocene and Holocene (2–16ka) sedimentation in the Columbia River Estuary, Oregon, USA." Marine Geology 273, no. 1-4 (August 2010): 83–95. http://dx.doi.org/10.1016/j.margeo.2010.02.005.

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Hamm, P. B., S. L. Gieck, N. L. David, and R. M. Hunger. "First Report of Soilborne wheat mosaic virus on Wheat (Triticum aestivum) in the Columbia Basin of Oregon." Plant Disease 91, no. 11 (November 2007): 1513. http://dx.doi.org/10.1094/pdis-91-11-1513c.

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The Columbia Basin of Oregon consists of six counties (Gilliam, Hood River, Morrow, Sherman, Wasco, and Umatilla) and is the major wheat-producing region in the state. In 2005, these counties produced 300,277 ha of mostly fall-planted wheat. While primarily a dryland production area, wheat (approximately 8,094 ha) is also grown as a rotational crop under irrigation. Stunted and chlorotic winter wheat plants with leaves exhibiting a mosaic pattern consistent with that caused by Soilborne wheat mosaic virus (SBWMV) were observed in March 2005. These plants originated from four center-pivot irrigated fields in Umatilla County with each field approximately 50.6 ha. One-half of one field was planted with cv. Western Breeders 470 (WB470) and the other half with cv. Tubbs, while the three other fields were planted to Tubbs. In the split-planted field, symptoms were widespread in the WB470 half but only observed in low-lying areas planted with Tubbs. ELISA with a monoclonal antibody (Agdia Inc., Elkhart, IN) confirmed the presence of SBWMV, which is transmitted by the soilborne organism Polymyxa graminis. Electron microscopy confirmed rigid, rod-shaped particles that were 19 nm wide and of two size classes, 138 to 222 and 416 to 471 nm long. Presence of SBWMV was further verified by reverse transcription (RT)-PCR using SBWMV RNA-2 specific primers (sense 5′-AAAGAGTCTIGCGTRTARCAYTC-3′ and antisense 5′-AACGGTGTTAGTAARYTRGGKGA-3′), which amplified the predicted 338-bp product from the coat protein gene (1). Additional positive samples were found in 2006 from fall-planted wheat cvs. WB 528 and MJ9 from two additional 50.6-ha fields in Umatilla County. In 2005, yield of WB470 in the split-planted field was reduced by approximately 15% compared with yields obtained in similar fields planted with WB470 not exhibiting symptoms. SBWMV has been reported previously in Oregon (2) but nearly 322 km to the west in an area that is not the major wheat-producing region in Oregon. Because of the apparent reduced susceptibility of Tubbs, which is an older cultivar, as compared with WB470, WB528, and MJ9, which are three new high-yielding cultivars, additional research is needed to identify the reaction to SBWMV of cultivars adapted for production in the Pacific Northwest, particularly if this disease becomes widely distributed in both irrigated and dryland production areas. References: (1) G. R. G. Clover et al. Plant Pathol. 50:761, 2001. (2) M. L. Putman et al. Plant Dis. 78:102, 1994.
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SHEAR, WILLIAM A., and SHAHAN DERKARABETIAN. "Nomenclatorial changes in Triaenonychidae: Sclerobunus parvus Roewer is a junior synonym of Paranonychus brunneus (Banks), Mutusnonychus Suzuki is a junior synonym of Paranonychus Briggs, and Kaolinonychinae Suzuki is a junior synonym of Paranonychinae Briggs (Opiliones: Triaenonychidae)." Zootaxa 1809, no. 1 (June 25, 2008): 67. http://dx.doi.org/10.11646/zootaxa.1809.1.5.

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The harvestman species Sclerobunus parvus was described by Roewer (1931) from the Queen Charlotte Islands, British Columbia, Canada. Some forty years later, Briggs (1971) revised the Triaenonychidae of North America, but missed including Roewer’s species, which had not been mentioned in the literature since its description. Briggs (1971) recognized two subfamilies in North America, Triaenonychinae Sørensen 1886 (Briggs attributed the subfamily name to Pocock, but according to the International Code of Zoological Nomenclature, Sørensen’s original proposal of the family name included the nominate subfamily) and Paranonychinae Briggs 1971. Paranonychinae included two new genera, Metanonychus Briggs 1971 and Paranonychus Briggs 1971. The latter genus was based on Sclerobunus brunneus Banks 1893, a commonly occurring species distributed from Clackamas County, Oregon, north to Atka Island, Alaska (Briggs 1971).
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SHELLEY, ROWLAND M. "A new polydesmid milliped genus and two new species from Oregon and Washington, U. S. A., with a review of Bidentogon Buckett and Gardner, 1968, and a summary of the family in Western North America (Polydesmida: Polydesmidae)." Zootaxa 296, no. 1 (September 16, 2003): 1. http://dx.doi.org/10.11646/zootaxa.296.1.1.

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In North America west of the Continental Divide, the milliped family Polydesmidae consists of six genera and 15 species, and occupies eight disjunct areas. Retrorsia, n. gen., is proposed for two new “micro-polydesmid” species (R. leonardi, the type species, and R. benedictae) in western Oregon and Washington, primarily in the lower Columbia River Valley. It is most closely related to Utadesmus Chamberlin and Hoffman, 1950, in Utah and New Mexico, and is characterized primarily by a retrorse gonopodal tibiotarsus that curves dorsad and counters the ventral curvature of the telopodal stem. New records are presented for the coastal species of Bidentogon Buckett and Gardner, 1968, occurring from Mendocino to Santa Cruz counties, California, and encompassing the area around San Francisco Bay. The oldest available name for this species is californicus (Chamberlin, 1918), whose type locality is Stanford, Santa Clara County. This name has been misapplied to the species occurring in Sacramento County, herein named B. expansus, n. sp., and B. helferorum Buckett and Gardner, 1968, is placed in synonymy under B. californicus.
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Foit, F. F., and M. E. Ulbricht. "COMPOSITIONAL VARIATION IN MERCURIAN TETRAHEDRITE TENNANTITE FROM THE EPITHERMAL DEPOSITS OF THE STEENS AND PUEBLO MOUNTAINS, HARNEY COUNTY, OREGON." Canadian Mineralogist 39, no. 3 (June 1, 2001): 819–30. http://dx.doi.org/10.2113/gscanmin.39.3.819.

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Dissertations / Theses on the topic "Geochemistry – Oregon – Columbia County"

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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 plagioclase microlites. Gibbsite occurs with poorly crystalline goethite and hematite in the gibbsite nodular zone. Clays are absent in this part of the profile . The iron pisolite zone is at the top of the profile above the gibbsite nodular zone. Both maghemite and goethite pisolites occur in the lower part of the zone while maghemite pisolites are dominant in the upper part of the pisolite zone. The parent flow is the Frenchman Springs Member of the Wanapum Basalt for the Columbia County profile and the Pomona Member of the Saddle Mountains Basalt for the Cowlitz County profile. Distribution of the major, minor and trace elements through the profile shows three distinct sympathetic patterns consisting of lanthanide elements and Na; As, Sbi Th, Hf, and Ta; and transition metals Fe, Ti, V, and Cr. Ratios between the high-field strength elements Ta and Hf are nearly constant through the profile, and Hf appears to be the least mobile elements of the elements analyzed in the profile. Ratios of other elements were calculated against Hf, based on the assumption that it has remained largely immobile during weathering, to show element enrichment and depletion in the profile independent of mass-volume changes. Transition metals and Al show a progressive depletion through the upper gibbsite nodular and iron pisolite zone due to leaching in the profile. Lanthanide elements (except Ce), As, and Sb show an obvious enrichment in the iron pisolite zone relative to the gibbsite nodular zone. Volume reduction during weathering was calculated based on the immobility of Hf. In the gibbsite nodular zone, the volume reduction calculated for bulk samples is greater than for gibbsite nodule separates suggesting that a greater volume reduction occurred the matrix material surrounding the nodules. Ratios between gibbsite nodules and parent basalt of the immobile elements Hf, Ta, Fe, Ti, Th and Cr suggest that the nodules, where the relic textures are preserved, have undergone volume reduction. Based on the immobility of Hf, the gibbsite nodules lost approximately 40% of the original volume. The volume factors based on the immobility of Hf show that the pisolite zone experienced a greater volume reduction than the gibbsite nodular zone. Absolute gains and losses relative to the parent basalt show the following relative order of depletion: Na > La > Eu > Sm > Co > Mn > Ce > Sc > Ta > V > Cr > Lu > Th > Fe > Ga > Al. The lesser mobility of Ce and Lu relative to other lanthanide elements suggests fractionation of lanthanide elements in the bauxite profile. Aluminum is both enriched and depleted at different depths in the gibbsite nodular zone suggesting that Al is mobilized from the matrix and possibly the pisolite zone into Al enriched gibbsite nodules. Volume reduction and destruction of relic textures in the pisolite zone is accompanied by small-scale mobilization of Th, Cr, Fe, Hf, Ga, Sc, and Ta during the formation of iron pisolites. Formation of the iron pisolite zone above the gibbsite nodular zone may indicate a change in climate from a heavy year round to a seasonal rainfall pattern.
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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 this study is to identify the water-bearing units present in Dutch Canyon and to characterize water quality within these units. The physical hydrogeology of Dutch Canyon was assessed mainly through the collation of 196 local well reports that contained lithologic information from which individual hydrostratigraphic units were identified and characterized. Hydraulic parameters for individual units were estimated using pump rates and drawdowns provided in select well reports. Water quality for the units identified was assessed through the collection of 48 samples of well, spring, and stream water from Dutch Canyon. Measurements of pH, specific conductivity, temperature, dissolved oxygen, reduction potential, and alkalinity were recorded in the field and samples were analyzed for major ions, arsenic, and stable isotopes. The major water-bearing units of Dutch Canyon were separated into five physically distinct hydrostratigrapic units: the lower, middle, and upper units of the sedimentary Lower Miocene Scappoose Formation, and the Wapshilla Ridge and Ortley members of the Lower to Middle Miocene Grande Ronde Basalt. Groundwater flow likely occurs in discrete, relatively thin (~2- to 10-m thick) zones within the Grand Ronde Basalt members. These units only occur along the slopes and ridges of Dutch Canyon west of the Portland Hills Fault, which parallels the eastern margin of the study area. The Scappoose Formation units contain clay- and silt-rich layers and lenses that limit the useable aquifer volume and vertical movement of groundwaters. In general, all hydrostratrigraphic units east of the Portland Hills Fault have low transmissivities and water wells completed in each of them are commonly low- yielding wells, though there are some exceptions. Geochemically, the lower and middle units of the Scappoose Formation were similar to one another with many wells yielding groundwater with high total dissolved solids (TDS) contents (mean TDS = 330 mg L-1; n = 27). Nearly 20% of the wells sampled that were screened in these units (5 of 27) yielded groundwater that exceeded the U.S. Environmental Protection Agency's National Secondary (non-enforceable) Drinking Water Regulation standard of 500 mg L-1 TDS. The upper unit of the Scappoose Formation and the overlying Grande Ronde Basalt members generally yield water with lower TDS contents (mean < 200 mg L-1; maximum = 342 mg L-1; n = 20). Groundwater resources in Dutch Canyon are limited and low well yields are common. The primary water quality concern is saline water, which is generally found in the lower and middle units of the Scappoose Formation near the valley floor. Low recharge rates determined from hydrograph analysis of stream discharge measurements are consistent with the geology and steep terrain of the area and further limit the available groundwater and the degree of flushing of what may be connate waters in the deeper units.
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Caldwell, Rodney R. "Geochemistry, Alluvial Facies Distribution, Hydrogeology, and Groundwater Quality of the Dallas-Monmouth Area, Oregon." PDXScholar, 1993. https://pdxscholar.library.pdx.edu/open_access_etds/4573.

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The Dallas-Monmouth area, located in the west-central Willamette Valley, Oregon, consists of Tertiary marine and volcanic bedrock units which are locally overlain by alluvium. The occurrence of groundwater with high salinities has forced many rural residents to use public water supplies. Lithologic descriptions from driller's logs, geochemical (INAA), and x-ray diffraction analyses were used to determine alluvial facies distribution, geochemical and clay mineral distinctions among the units, and possible sediment sources. Driller's log, chemical and isotopic analysis, and specific conductance information from wells and springs were used to study the hydrogeologic characteristics of the aquifers and determine the distribution, characteristics, controlling factors, and origin of the problem groundwaters. Three lithologic units are recognized within the alluvium on the basis of grain-size: 1) a lower fine-grained unit; 2) a coarse-grained unit; and 3) an upper fine-grained unit. As indicated by geochemical data, probable sediment sources include: 1) Cascade Range for the recent river alluvium; 2) Columbia Basin plutonic or metamorphic rocks for the upper fine-grained older alluvium; and 3) Siletz River Volcanics from the west for the coarse-grained sediment of the older alluvium. The Spencer Formation (Ts) is geochemically distinct from the Yamhill Formation (Ty) and the undifferentiated Eocene-Oligocene sedimentary rock (Toe) with higher Th, Rb, K, and La and lower Fe, Sc, and Co concentrations. The clay mineralogy of the Ty is predominantly smectite (86%) while the Ts contains a more varied clay suite (kaolinite, 39%; smectite, 53%; and illite 8%). The Ty and Toe are geochemically similar, but are separated stratigraphically by the Ts. The Siletz River Volcanics is distinct from the marine sedimentary units with higher Fe, Na, Co, Cr and Sc concentrations. The Ty and Toe are geochemically similar to volcanic-arc derived sediments while the Ts is similar to more chemically-evolved continental crust material. Wells that encounter groundwater with high salinities (TDS>300 mg/1): 1) obtain water from the marine sedimentary bedrock units or the older alluvium; 2) are completed within zones of relatively low permeability (specific capacities ~5 gpm/ft); and 3) are located in relatively low-lying topographic settings. The poor quality waters occurring under these conditions may be due to the occurrence of mineralized, regional flow system waters. Aquifers of low permeability are less likely to be flushed with recent meteoric water, whereas upland areas and areas with little low permeability overburden are likely zones of active recharge and flushing with fresh, meteoric water. The most saline waters sampled have average isotopic values (6D = -6.7 ° / 00 and 60 = -1.7 ° / 00 ) very near to SMOW, while the other waters sampled have isotopic signatures indicative of a local meteoric origin. The Br/Cl ratios of most (10 of 14) of the waters sampled are within 20% of seawater. A marine connate origin is proposed for these waters with varying amounts of dilution with meteoric waters and water-rock interaction. The problem waters can be classified into three chemically distinct groups: 1) CaC12 waters, with Ca as the dominant cation; 2) NaCl waters with Na as the dominant cation; and 3) Na-Ca-Cl waters with nearly equal Na and Ca concentrations. The NaCl and CaC12 waters may have similar marine connate origins, but have undergone different evolutionary histories. The Na-Ca-Cl waters may represent a mixing of the NaCl and CaC12 waters.
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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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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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Swanson, Rodney Duane. "A stratigraphic-geochemical study of the Troutdale Formation and Sandy River Mudstone in the Portland basin and lower Columbia River Gorge." PDXScholar, 1986. https://pdxscholar.library.pdx.edu/open_access_etds/3720.

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Hyaloclastic sediment forms an identifiable stratigraphic interval within the Troutdale Formation that can be traced from the Bridal Veil channel to the Portland basin. Hyaloclastic sediment composed chiefly vitric sands is found interbedded with muds, sandy muds and gravels penetrated by wells in northeast Portland are correlated with the upper member of the Troutdale Formation. These beds are characteristic of the informal upper member of the Troutdale Formation in the Bridal Veil channel of the ancestral Columbia River (Tolan and Beeson, 1984) and the type area of the Troutdale Formation exposed along the Sandy River (Trimble, 1963). Fluvially deposited hyaloclastic beds within the upper Troutdale Formation are interpreted to be the result of interaction of Cascadian basaltic lavas with an ancestral Columbia River (Tolan and Beeson, 1984; Trimble, 1963). Glass clasts taken from well and outcrop samples have nearly identical trace and minor element geochemical content as determined by instrumental neutron activation analysis.
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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 researcher. The spatial analyses revealed that while most tool types were rather evenly distributed throughout the plankhouse interior (taphonomic factors having been considered), cutting, graving and scraping tools (as well as some characteristics of these tools, such as raw material quality) were significantly unevenly distributed, correlating with the hypothesized gradient of social rank aligned with the long axis of the plankhouse. Further analyses strongly suggested that one or more labor specialists, using high frequencies of graving tools, were inhabitants of the elite portion of the plankhouse. Most domestic activities reflected by the stone tools of this assemblage were engaged in by plankhouse inhabitants of all social ranks. Knowing that this is the case, as well as that in some instances there is compelling evidence for status-determined labor specialization, aids in our understanding of the character of aboriginal social structure on the Pacific Northwest Coast.
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Carlin, Rachel Ann. "A geochemical study of the Eagle Creek Formation in the Columbia River Gorge, Oregon." PDXScholar, 1988. https://pdxscholar.library.pdx.edu/open_access_etds/3749.

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The Early Miocene Eagle Creek Formation, a series of volcanic mudflows and debris flows, is exposed in the Columbia River Gorge about 64 kilometers east of Portland, Oregon. Eighty-seven samples were analyzed using instrumental neutron activation analysis for trace element concentrations. Eleven samples were analyzed by Dr. Peter Hooper at Washington State University using X-ray Fluorescence for major element chemistry. These data were used to determine that the Eagle Creek Formation compositionally ranges from andesite to dacite.
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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 lower Columbia River paralleled the household residence location that was keyed to social status. Among Northwest Coast societies the household was the basic social and economic unit. Ground stone tools were selected for study because they include tools which were instrumental parts of a technology that depended upon highly organized and scheduled activities, i.e. fishing and house construction. If these tools were controlled by particular individuals or families within the household, their archaeological deposition might reflect social status differences. Two questions were asked in this study. (1) What is the correlation between the volume of sediment excavated and the number of ground stone artifacts recovered from the house? (2) What is the relationship between residence location and the density of ground stone artifacts recovered from the house? The ground stone artifacts were identified, classified and counted. Correlation coefficients between the volumes of sediment excavated and the number of ground stone artifacts recovered showed that the correlation was suspiciously weak, in general, and not correlated for fishing net weights. Some factor other than solely excavation volumes was affecting ground stone artifact counts. To answer the second question linear regressions were performed. They revealed that although location was to some degree a function of the density of ground stone artifacts, that relationship was weak at the .05 significance level. However, the relationship was stronger for fishing net weights. It is likely that there are multiple reasons for ground stone tool distributions and sites must be excavated with broad exposures in order to understand the relationship between residence location and artifact densities.
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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, not transportable design variables.
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Books on the topic "Geochemistry – Oregon – Columbia County"

1

Smythe, Richard T. Soil survey of Columbia County, Oregon. [Washington, D.C.?]: The Service, 1986.

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Smythe, Richard T. Soil survey of Columbia County, Oregon. [Washington? D.C.]: The Service, 1986.

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Steinkampf, W. C. Ground-water geochemistry of the Columbia Plateau aquifer system, Washington, Oregon, and Idaho. Tacoma, Wash: U.S. Geological Survey, 1996.

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Steinkampf, W. C. Ground-water geochemistry of the Columbia Plateau aquifer system, Washington, Oregon, and Idaho. Tacoma, Wash: U.S. Geological Survey, 1996.

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Steinkampf, W. C. Ground-water geochemistry of the Columbia Plateau aquifer system, Washington, Oregon, and Idaho. Tacoma, Wash: U.S. Geological Survey, 1996.

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6

Steinkampf, W. C. Ground-water geochemistry of the Columbia Plateau aquifer system, Washington, Oregon, and Idaho. Tacoma, Wash: U.S. Geological Survey, 1996.

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7

Steinkampf, W. C. Ground-water geochemistry of the Columbia Plateau aquifer system, Washington, Oregon, and Idaho. Tacoma, Wash: U.S. Geological Survey, 1996.

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8

Thompson, Barbara Bennett. 1880 census of Columbia County, Oregon: Fully indexed by family names. St. Helens, Or: B. Thompson, 1986.

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9

Wright, Thomas L. Chemical analyses used to compute the average chemical composition of rocks and glasses for geochemical units defined in the Yakima Basalt Subgroup, Columbia River Basalt Group, Washington, Oregon, and Idaho. [Denver, Colo.?]: Dept. of the Interior, U.S. Geological Survey, 1988.

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Wright, Thomas L. Chemical analyses used to compute the average chemical composition of rocks and glasses for geochemical units defined in the Yakima Basalt Subgroup, Columbia River Basalt Group, Washington, Oregon, and Idaho. [Denver, Colo.?]: Dept. of the Interior, U.S. Geological Survey, 1988.

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Conference papers on the topic "Geochemistry – Oregon – Columbia County"

1

Appleby, Christina A., and John Bauer. "FLOOD RISK ASSESSMENT WITHIN THE COLUMBIA CORRIDOR DRAINAGE DISTRICTS, MULTNOMAH COUNTY, OREGON." In 115th Annual GSA Cordilleran Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019cd-329277.

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Tashman, Jessica N., Rodney M. Feldmann, and Carrie E. Schweitzer. "TAPHONOMIC INFERENCES DRAWN FROM EPIBIONTS ON LATE OLIGOCENE CRABS OF THE KEASEY FORMATION, COLUMBIA COUNTY, OREGON." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-282190.

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Reports on the topic "Geochemistry – Oregon – Columbia County"

1

Gless, James. Slope stability as related to geology at Rainier, Columbia County, Oregon. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5867.

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Jackson, Ronald. A Mineralogical and Geochemical Study of the Ferruginous Bauxite Deposits in Columbia County, Oregon, and Wahkiakum County, Washington. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2132.

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Kelty, Kevin. Stratigraphy, lithofacies, and environment of deposition of the Scappoose formation in central Columbia County, Oregon. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.3071.

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Ketrenos, Nancy. The stratigraphy of the Scappoose formation, the Astoria formation, and the Columbia River basalt group in northwestern Columbia County, Oregon. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5500.

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Townley, Paul. Preliminary investigation for underground storage of pipeline gas in the Bruer and Flora pools, Mist gas field, Columbia County, Oregon. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5425.

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Haas, Nina. A geophysical study of the North Scappoose Creek, Alder Creek, Clatskanie River lineament, along the trend of the Portland Hills fault, Columbia County, Oregon. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.3244.

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Geologic map of the Deer Island Quadrangle, Columbia County, Oregon and Cowlitz County, Washington. US Geological Survey, 2002. http://dx.doi.org/10.3133/mf2392.

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