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Density separation of clay minerals

Creator:: Nelsen, Terry A.
Abstract:: Illite, chlorite, montmorillonite and kaolinite, as well as natural marine sediments and mixtures of the standards were subjected to density separation by centrifugation in a linear heavy-liquid gradient. The density layers yielded by centrifugation were recovered and analyzed by X-ray diffraction. Separates were not monomineralic but rather were polymineralic usually...
Resource Type:: Masters Thesis
Full Text:: Separation of Clay Minerals by Terry Allen Nelsen A THESIS submitted to Oregon State University in

Clay mineral origin and distribution on Astoria Fan

Creator:: Russell, Kenneth Lloyd
Abstract:: Clay minerals from sediment samples obtained on Astoria Fan were analyzed by X-ray diffraction. Clay minerals are defined for the purpose of this study as crystalline phyllosilicates less than two microns in equivalent settling diameter. The clay minerals are subdivided into the five common families: montmorillonite, chlorite, vermiculite, illite, and...
Resource Type:: Masters Thesis
Full Text:: sample was sufficient for the identification of all the clay minerals. A typical Recent hemipelagic

Sediment sources and clay mineral distributions off the Oregon coast : evidence for a poleward slope undercurrent

Creator:: Karlin, Robert
Resource Type:: Masters Thesis
Full Text:: distribution patterns, a) summer, b) winter 69 20 Comparisons of clay mineral percentages on the Cascadia

The structure of an arctic shallow water benthic community : effects of ice gouging

Creator:: Braun, Gary Michael
Abstract:: The shallow water benthic habitat of the SW Beaufort Sea is frequently gouged by the keels of ice pressure ridges. This natural physical disturbance was hypothesized to be an important factor affecting the structure of the benthic community. Smith-McIntyre grab samples were taken from three discrete gouge axes and from...
Resource Type:: Masters Thesis
Full Text:: , Susan, Dennis, John and Sharon) for providing a much needed weekly release, and the secretarial staff

Microbial alteration of the seafloor

Creator:: Josef, Jennifer A.
Abstract:: In the early 1980's the first evidence of biological alteration of basalt glass (sideromelane) was published. Since that time additional evidence, including DNA staining, isotopic abundance and chemical mapping, has come to light suggesting that this unique alteration of glass can be attributed to microbial activity. Microbial alteration textures have...
Resource Type:: Masters Thesis
Full Text:: were biotic clay (Appendix 2). Figures 3 and 4 show two different thin sections and a selection of all

A terrestrial organic matter depocenter on a high-energy margin adjacent to a low-sediment-yield river : the Umpqua River margin, Oregon

Creator:: Hastings, Roxanne H.
Abstract:: Small, mountainous river systems have been increasingly studied due to their importance as sources of fluvial sediment and organic matter to the coastal ocean. Thus far, studies of small, mountainous river systems have focused on rivers with very high sediment loads. The well-studied Eel River dispersal system in northern California...
Resource Type:: Masters Thesis
Full Text:: . Hastings for the degree of Master of Science in Oceanography presented on May 12, 2011. Title: A

Temporal variations in volume and geochemistry of volcanism in the Western Cascades, Oregon

Creator:: Verplanck, Emily Pierce
Resource Type:: Masters Thesis
Full Text:: VOLUME AND GEOCHEMISTRY OF VOLCANISM ABSTRACT APPROVED IN THE WESTERN CASCAD ROBERT A. OREGON Fifty

Utilization of inorganic and organic nitrogen by phytoplankton off the Washington and Oregon coasts

Creator:: Kokkinakis, Steven Andon
Resource Type:: Masters Thesis
Full Text:: : Patricia A. Wheeler Uptake of NO3, NH4+, and urea was measured using tracers during the July 1985

Submarine plateau volcanism and Cretaceous Ocean Anoxic Event 1a : geochemical evidence from Aptian sedimentary sections

Creator:: Walczak, Paul S.
Abstract:: Marine sediments exceptionally rich in organic carbon, known as black shales, occur globally but intermittently in well correlated Cretaceous successions. The presence of black shales indicates that sporadic, ocean-wide interruption of normal respiration of marine organic matter during oxygen-deficient conditions has occurred. Submarine volcanism on a massive scale, related to...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Robert A. Duncan Marine sediments exceptionally rich in organic carbon, known as

Hydrothermal links between ocean plateau formation and global anoxia at the Cenomanian-Turonian boundary

Creator:: Snow, Laura J.
Abstract:: The Cretaceous was a period of extreme climatic conditions accompanied by major perturbations in ocean-atmosphere biogeochemical cycles. One of the most intriguing features is the sporadic interruption of normal marine pelagic sediment deposition by organic rich sediments deposited during oxygen-deficient conditions (ocean anoxic events OAEs). A current model for the...
Resource Type:: Masters Thesis
Full Text:: Plateau Formation and Global Anoxia at the Cenomanian-Turonian Boundary Abstract approved: Robert A

ScholarsArchive@OSU

Density separation of clay minerals

Clay mineral origin and distribution on Astoria Fan

Sediment sources and clay mineral distributions off the Oregon coast : evidence for a poleward slope undercurrent

The structure of an arctic shallow water benthic community : effects of ice gouging

Microbial alteration of the seafloor

A terrestrial organic matter depocenter on a high-energy margin adjacent to a low-sediment-yield river : the Umpqua River margin, Oregon

Temporal variations in volume and geochemistry of volcanism in the Western Cascades, Oregon

Utilization of inorganic and organic nitrogen by phytoplankton off the Washington and Oregon coasts

Submarine plateau volcanism and Cretaceous Ocean Anoxic Event 1a : geochemical evidence from Aptian sedimentary sections

Hydrothermal links between ocean plateau formation and global anoxia at the Cenomanian-Turonian boundary

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