Index Catalog // ScholarsArchive@OSU

Methane sources, fluid flow, and diagenesis along the northern Cascadia Margin; using authigenic carbonates and pore waters to link modern fluid flow to the past

Creator:: Joseph, Craig E.
Abstract:: Methane derived authigenic carbonate (MDAC) precipitation occurs within marine sediments as a byproduct of the microbial anaerobic oxidation of methane (AOM). While these carbonates form in chemical and isotopic equilibrium with the fluids from which they precipitate, burial diagenesis and recrystallization can overprint these signals. Plane polarized light (PPL) and...
Resource Type:: Masters Thesis
Full Text:: : _______________________________________________________ Marta E. Torres Methane derived authigenic carbonate (MDAC) precipitation occurs within

A study of whale watching visitor's cognitive constructs in relation to a whale watching outreach program : An assessment of past experience, value orientations, awareness of actions, and conceptual knowledge structure

Creator:: Christensen, Alicia H.
Abstract:: Given the current state of our oceans, the Pew Oceans Commission (1993) has strongly recommended that increased efforts be made towards ocean literacy. Informal education and outreach programs like the Whale Watching Spoken Here program are important contributors to life-long learning. However, there is little research looking at how these...
Resource Type:: Masters Thesis
Full Text:: : Shawn Rowe Marta Torres Given the current state of our oceans, the Pew Oceans Commission

Deconvolving the sedimentary phases of barium using flow-through time-resolved analysis

Creator:: Hsieh, Chih-Ting
Abstract:: The distribution of barite (BaSO₄) in marine sediments has long been studied as a proxy for paleoproductivity. While pure barite is known to be a stable mineral in oxic sediments, it is also known that variations in the Sr/Ba ratio influence its solubility and liability during early diagenesis. To extract...
Resource Type:: Masters Thesis
Full Text:: : __________________________________________________ Marta E. Torres and Gary P. Klinkhammer The distribution of barite

Reconstructing salinity conditions in Nares Strait (Canadian Archipelago) from stable isotope profiles in bivalve shells

Creator:: Zima, Daniela
Abstract:: Nares Strait is one of three main passages of the Canadian Archipelago that channels freshwater from the Arctic Ocean to the North Atlantic. There are very few observations regarding the role of this region on the present day Arctic freshwater budget, and even less regarding the changes in freshwater fluxes...
Resource Type:: Masters Thesis
Full Text:: :________________________________________________________ Marta E. Torres, Kelly K. Falkner Nares Strait is one of three main passages of the

Contribution of cold seep barite to the barium geochemical budget of a marginal basin

Creator:: McQuay, Erica L.
Abstract:: Large barite (BaSO4) structures mark cold seeps in the southern San Clemente Basin. Barium flux to San Clemente sediments is two to three times greater than fluxes measured in surrounding California Borderland basins. Analyses of sediment trap material, water column samples, sediments and pore water indicate that expected bariumbearing mineral...
Resource Type:: Masters Thesis
Full Text:: Abstract approved:________________________________________________________ Robert W. Collier, Marta E

Data report : composition of clay minerals from hemiplegic sediments at Hydrate Ridge, Cascadia subduction zone

Creator:: Underwood, Michael and Torres, Marta E.
Abstract:: This report describes the results of semiquantitative analysis of clay mineral composition by X-ray diffraction. The samples consist of hemipelagic mud and mudstone cored from Hydrate Ridge during Leg 204 of the Ocean Drilling Program. We analyzed oriented aggregates of the clay-sized fractions (<2 μm) to estimate relative percentages of...
Resource Type:: Article
Full Text:: Underwood and Marta Torres ABSTRACT INTRODUCTION X-RAY DIFFRACTION METHODS Sample Preparation X-Ray

Ocean Science in The SMILE Program : Combining Ocean Literacy and Concept Mapping as an Aid for Curriculum Development

Creator:: Dover, Laura H.
Abstract:: This study reports on the creation and testing of a model concept-mapping process that will aid the development and documentation of ocean science educational content of The Science and Math Investigative Learning Experiences (SMILE) Program, a pre-college science and math enrichment program based at Oregon State University. The project uses...
Resource Type:: Capstone Project
Full Text:: & climate S M IL E Energy & mineral Resources Ocean arts & cultures Biogeochemical

Mapping, geochemical sampling and submersible observations of recent activity on the San Clemente fault zone : 27 March to 4 April 2000

Creator:: McManus, James, Goldfinger, Chris, and Torres, Marta E.
Resource Type:: Technical Report

Geomicrobiology of marine sediment containing methane

Creator:: Briggs, Brandon R.
Abstract:: Marine sediments contain an abundance of methane that is biologically produced and plays a significant role in the global carbon cycle. Microbes responsible for the carbon cycle in marine sediments, and the processes that they carry out, need to be characterized in order to fully understand the role of this...
Resource Type:: Dissertation
Full Text:: Colwell, Marta Torres, Marty Fisk, Peter Bottomley, and John Selker for their support and guidance

North-south variability in the history of deformation and fluid venting across Hydrate Ridge, Cascadia margin

Creator:: Johnson, Joel E., Goldfinger, Chris, Tréhu, Anne M., Bangs, Nathan Lawrence Bailey, Torres, Marta E., and Chevallier, Johanna
Abstract:: Hydrate Ridge is an accretionary thrust ridge located on the lower slope of the central Cascadia convergent margin. Structural mapping based on two-dimensional and three-dimensional multichannel seismic reflection profiles and gridded bathymetry coupled with deep-towed sidescan sonar data and Ocean Drilling Program (ODP) biostratigraphy suggests that seafloor fluid venting patterns...
Resource Type:: Article
Full Text:: Margin Joel E. Johnson, Chris Goldfinger, Anne M. Tréhu, Nathan L.B. Bangs, Marta E. Torres, and Johanna

ScholarsArchive@OSU

Methane sources, fluid flow, and diagenesis along the northern Cascadia Margin; using authigenic carbonates and pore waters to link modern fluid flow to the past

A study of whale watching visitor's cognitive constructs in relation to a whale watching outreach program : An assessment of past experience, value orientations, awareness of actions, and conceptual knowledge structure

Deconvolving the sedimentary phases of barium using flow-through time-resolved analysis

Reconstructing salinity conditions in Nares Strait (Canadian Archipelago) from stable isotope profiles in bivalve shells

Contribution of cold seep barite to the barium geochemical budget of a marginal basin

Data report : composition of clay minerals from hemiplegic sediments at Hydrate Ridge, Cascadia subduction zone

Ocean Science in The SMILE Program : Combining Ocean Literacy and Concept Mapping as an Aid for Curriculum Development

Mapping, geochemical sampling and submersible observations of recent activity on the San Clemente fault zone : 27 March to 4 April 2000

Geomicrobiology of marine sediment containing methane

North-south variability in the history of deformation and fluid venting across Hydrate Ridge, Cascadia margin

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