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Geochemistry of mid-ocean ridge basalt within and surrounding the Australian-Antarctic discordance

Creator:: Pyle, Douglas G.
Resource Type:: Dissertation
Full Text:: . Christie The Australian-Antarctic Discordance (AAD) is a unique feature of the global mid- ocean ridge

The Southeast Indian Ridge water contents of MORB glasses and chemical effects of propagating rifts

Creator:: Sylvander, Brendan A.
Resource Type:: Masters Thesis
Full Text:: along a section of mid-ocean ridge is unique. In general, lavas from the four propagating rifts west of

Cenozoic biogenic silica sedimentation in the Antarctic Ocean, based on two deep sea drilling project sites

Creator:: Brewster, Nancy Ann
Abstract:: The Antarctic Ocean during the Cenozoic experienced four periods of increased surface productivity: the Middle Eocene; the beginning of the Miocene; the Middle Miocene; and near the Miocene-Pliocene boundary. The fourth increase in productivity began five million years ago and has since progressively increased to the present level of intense...
Resource Type:: Masters Thesis

Mantle melting and heterogeneity along mid-ocean ridges : insight from basalt geochemistry along axial depth and morphologic gradients for intermediate spreading rate systems

Creator:: Russo, Christopher J.
Abstract:: This investigation focuses on gaining a better understanding of the complex relationship between melt generation, source variability and mid-ocean ridge morphology. The approach adopted here uses a variety of geochemical techniques to evaluate the ability of 'global' models to predict regional scale geochemical variability associated with axial depth and axial...
Resource Type:: Dissertation
Full Text:: , source variability and mid-ocean ridge morphology. The approach adopted here uses a variety of

Physical-biological interactions in the Southern Ocean

Creator:: Moore, Jefferson Keith
Abstract:: Physical-biological interactions in the Southern Ocean were investigated using remote sensing data from several different satellite sensors. Satellite sea surface temperature data were used to study the dynamics of the Antarctic Polar Front (PF). Satellite ocean color data were used to estimate surface chlorophyll concentrations and their relation to various...
Resource Type:: Dissertation
Full Text:: phytoplankton biomass seen at the Antarctic coast and near Southern Ocean islands. Interactions between ocean

Production and export of biogenic silica in the Southern Ocean

Creator:: Sigmon, Daniel E.
Abstract:: Dissolved silicic acid (Si(OH)4) and biogenic silica (BSiO2) concentrations were measured on four different cruises in the Southern Ocean along 1700 W from late October 1997 to mid-March 1998. These data were used to construct a vertically integrated Si budget in the surface layer from 58° to 68° S. Throughout...
Resource Type:: Masters Thesis
Full Text:: , DeMaster et al. 1996). As mentioned earlier, diatoms are not predominant in mid-ocean gyres, likely due to

Spatial structure of the physical and biological distributions across the Antarctic Polar Front in austral spring and summer

Creator:: Howard, Cidney
Abstract:: Mesoscale surveys to examine the relationship between the physical processes and biological response along the Antarctic Polar Front (PF) were conducted as part of the US JGOFS Southern Ocean Program during austral spring and summer 1997/98. Multiple crossings of the PF near 170° W, using a towed undulating instrument, provided...
Resource Type:: Masters Thesis
Full Text:: Convergence in the north and the Antarctic continent in the south, the Southern Ocean boundary is a

Physical and chemical factors controlling the distribution of the major phytoplankton classes at the Antarctic Polar Front, 170 °W

Creator:: Mengelt, Claudia
Abstract:: This study was part of the Antarctic Environment and Southern Ocean Study (AESOPS) program, whose main goal was to investigate the role of the biota in the carbon flux from the atmosphere to the interior of the ocean. We quantified the abundance of the major phytoplankton classes and examined the...
Resource Type:: Masters Thesis
Full Text:: was part of the Antarctic Environment and Southern Ocean Study (AESOPS) program, whose main goal was

The petrology, geochemistry, and geochronology of hotspot seamounts in the North Pacific and arc/backarc volcanism on the northern Antarctic Peninsula

Creator:: Keller, Randall A.
Abstract:: Volcanic rocks from hotspots and island arcs/backarcs typically have enriched trace element and isotopic compositions that contain a contribution from subducted oceanic crust. Isotopic and trace element data suggest that the enriched components in hotspot volcanism are ancient subducted sediment and crust, and the enriched components in arc/backarc volcanism are...
Resource Type:: Dissertation

Prokaryotes associated with marine crust

Creator:: Mason, Olivia Underwood
Abstract:: Oceanic crust covers nearly 70% of the Earth's surface, of which, the upper, sediment layer is estimated to harbor substantial microbial biomass. Marine crust; however, extends several kilometers beyond this surficial layer, and includes the basalt and gabbro layers. In particular, the basalt layer has high permeabilities which allows for...
Resource Type:: Dissertation
Full Text:: , G.L. (1999) Abiogenic methane in deep-seated mid- ocean ridge environments: Insights from stable

ScholarsArchive@OSU

Geochemistry of mid-ocean ridge basalt within and surrounding the Australian-Antarctic discordance

The Southeast Indian Ridge water contents of MORB glasses and chemical effects of propagating rifts

Cenozoic biogenic silica sedimentation in the Antarctic Ocean, based on two deep sea drilling project sites

Mantle melting and heterogeneity along mid-ocean ridges : insight from basalt geochemistry along axial depth and morphologic gradients for intermediate spreading rate systems

Physical-biological interactions in the Southern Ocean

Production and export of biogenic silica in the Southern Ocean

Spatial structure of the physical and biological distributions across the Antarctic Polar Front in austral spring and summer

Physical and chemical factors controlling the distribution of the major phytoplankton classes at the Antarctic Polar Front, 170 °W

The petrology, geochemistry, and geochronology of hotspot seamounts in the North Pacific and arc/backarc volcanism on the northern Antarctic Peninsula

Prokaryotes associated with marine crust

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