Index Catalog // ScholarsArchive@OSU

The influence of early diagenesis on trace element and molybdenum isotope geochemistry

Creator:: Poulson, Rebecca L.
Abstract:: This thesis investigates the influence of early diagenesis on trace metal and molybdenum isotope behavior in marine and lacustrine environments. Chapter one is a synthesis of previous research in all the marine environments investigated, providing an essential geochemical context for interpreting the observed behavior of Mo in these settings. Chapter...
Resource Type:: Dissertation
Full Text:: James McManus This thesis investigates the influence of early diagenesis on trace metal and

Glacial to holocene watermass and continental weathering reconstructions from the Southeast Pacific

Creator:: Muratli, Jesse M.
Abstract:: Sediments of the central Chile margin record changes in ocean circulation and continental erosion associated with large–scale climate change. Here Antarctic– influenced Southern Ocean currents flow equatorward, forming a link between the high– and low–latitude oceans. Part of this link, Antarctic Intermediate Water, is an important conduit that ventilates South...
Resource Type:: Masters Thesis
Full Text:: the Southeast Pacific Abstract approved: James McManus Zanna

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:: McShane, who helped with sample processing. In addition to serving on my committee, Jim McManus

Data report : major and trace element data for leg 202 sites 1233 and 1234

Creator:: McManus, James
Abstract:: The exchange of waters between the Pacific and the Southern Oceans occurs along the eastern boundary of the South Pacific. Because water masses of the Antarctic provide a connection among the world's ocean basins, these water masses maintain the ability to influence changes in ocean circulation and climate (Lynch-Stieglitz et...
Resource Type:: Article
Full Text:: Report: Major and Trace Element Data For Leg 202 Sites 1233 and 1234 James McManus INTRODUCTION

Sediment accumulation and human impacts in Tillamook Bay, Oregon

Creator:: Styllas, Michael N.
Abstract:: Tillamook Bay is the second largest estuary on the Oregon coast, and concerns have been raised whether human induced impacts have been responsible for the perceived increase in sedimentation rates during the past century. Major land-use practices within the five watersheds of the Bay include logging, forest fires, the construction...
Resource Type:: Masters Thesis
Full Text:: patterns. A brief review is provided of the study undertaken by Dr. James McManus for the collection

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.
Abstract:: The investigation described in this project will test the hypothesis that fluxes of carbon, barium, manganese, iron and uranium associated with fluid seepage at the San Clemente fracture zone significantly affect the geochemical budgets for these elements, and ultimately result in anomalously high benthic fluxes throughout the San Clemente basin.
Resource Type:: Technical Report
Full Text:: James McManus and Chris Goldfinger MARILYN POTTS GUIN LIBRARY H. 11 ELD MARINE SCIENCE CENTER OR[r,0N

Utilization of natural and supplemental biofuels for harvesting energy from marine sediments

Creator:: Nielsen, Mark E.
Abstract:: A benthic microbial fuel cell (BMFC) is an electrochemical device that generates current from the redox gradient at the sediment-water interface. Early prototypes had anodes buried in anoxic sediments and cathodes in overlying water. The BMFCs described in this dissertation are based on a chamber design that enables the use...
Resource Type:: Dissertation
Full Text:: and Hong Liu provided helpful reviews of my manuscripts while Jim McManus and Jack Istok provided

Unbalanced particle flux budgets in Crater Lake, Oregon: Implications for edge effects and sediment focusing in lakes

Creator:: Dymond, Jack, Collier, Robert W., McManus, James, and Larson, Gary L.
Abstract:: Flux estimates show that upward mixing of the deep-water nitrate pool accounts for more than 85% of the total new nitrogen input to the euphotic zone of Crater Lake. Because measured primary productivity (360 mg C m-2 d-1) is 10–30 times higher than a level supported solely by the input...
Resource Type:: Article
Full Text:: DYMOND, JACK, ROBERT COLLIER, JAMES MCMANUS, AND GARY L

Oceanic phosphorus imbalance : magnitude of the mid-ocean ridge flank hydrothermal sink

Creator:: Wheat, C. Geoffrey, McManus, James, Mottl, Michael J., and Giambalvo, Emily
Abstract:: We present a new estimate for the crustal phosphorous sink that results from reactions among seawater, basalt, and sediment blanketing low temperature mid-ocean ridge flank hydrothermal systems. New estimates for global hydrothermal power output, sediment thickness, and the dissolved phosphate concentrations in basement formation fluids indicate that fluid flow through...
Resource Type:: Article
Full Text:: -ocean ridge flank hydrothermal sink C. Geoffrey Wheat,1 James McManus,2 Michael J. Mottl,3 and Emily

Spatial and temporal distribution of dissolved oxygen in Crater Lake, Oregon

Creator:: McManus, James, Collier, Robert W., Dymond, Jack, Wheat, C. Geoffrey, and Larson, Gary L.
Abstract:: Small temporal and spatial variations in the distribution of dissolved oxygen in Crater Lake, Oregon, are used to estimate the mean age of the lake’s deep water, the flux of labile organic carbon to the deep lake, and the influence of hydrothermal activity on the concentration of dissolved oxygen within...
Resource Type:: Article
Full Text:: MCMANUS, JAMES, ROBERT COLLIER, JACK DYMOND, C. GEOFF WHEAT

ScholarsArchive@OSU

The influence of early diagenesis on trace element and molybdenum isotope geochemistry

Glacial to holocene watermass and continental weathering reconstructions from the Southeast Pacific

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

Data report : major and trace element data for leg 202 sites 1233 and 1234

Sediment accumulation and human impacts in Tillamook Bay, Oregon

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

Utilization of natural and supplemental biofuels for harvesting energy from marine sediments

Unbalanced particle flux budgets in Crater Lake, Oregon: Implications for edge effects and sediment focusing in lakes

Oceanic phosphorus imbalance : magnitude of the mid-ocean ridge flank hydrothermal sink

Spatial and temporal distribution of dissolved oxygen in Crater Lake, Oregon

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