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Cenozoic deep-water agglutinated foraminifera in the North Atlantic
(Massachusetts Institute of Technology, 1988)
Magmatism and dynamics of continental breakup in the presence of a mantle plume
(Massachusetts Institute of Technology, 2000)
This thesis studies the dynamics of mantle melting during continental breakups by geophysical, geochemical, and numerical analyses. The first part focuses on the mantle melting and crustal accretion processes during the ...
Seismic and magnetic constraints on the strucutre of upper oceanic crust and fast and slow spreading ridges
(Massachusetts Institute of Technology, 1998)
The upper ocean crust contains a comprehensive record of the shallow geological processes active along the world's mid-ocean ridge system. This thesis examines the magnetic and seismic structure of the upper crust at two ...
Deep explosive volcanism on the Gakkel Ridge and seismological constraints on Shallow Recharge at TAG Active Mound
(Massachusetts Institute of Technology, 2013)
Seafloor digital imagery and bathymetric data are used to evaluate the volcanic characteristics of the 85°E segment of the ultraslow spreading Gakkel Ridge (9 mm yr-¹). Imagery reveals that ridges and volcanic cones in the ...
The influence of ridge geometry at the ultraslow-spreading Southwest Indian Ridge (9⁰-25⁰E) : basalt composition sensitivity to variations in source and process
(Massachusetts Institute of Technology, 2006)
Between 90-25° E on the ultraslow-spreading Southwest Indian Ridge lie two sharply contrasting supersegments. One 630 km long supersegment erupts N-MORB that is progressively enriched in incompatible element concentrations ...
Stability of a coastal upwelling front over topography
(Massachusetts Institute of Technology, 1988)
Subduction in an eddy-resolving state estimate of the northeast Atlantic Ocean
(Massachusetts Institute of Technology, 2004)
Relatively little is known about the role of eddies in controlling subduction in the eastern half of the subtropical gyre. Here, a new tool to study the eastern North Atlantic Ocean is created by combining a regional, ...
The evolution of lithospheric deformation and crustal structure from continental margins to oceanic spreading centers
(Massachusetts Institute of Technology, 2002)
This thesis investigates the evolution of lithospheric deformation and crustal structure from continental margins to mid-ocean ridges. The first part (Ch. 2) examines the style of segmentation along the U.S. East Coast ...
Observations and modeling of wave-acceleration-induced sediment transport in the surfzone
(Massachusetts Institute of Technology, 2004)
Onshore sediment transport and sandbar migration are important to the morphological evolution of beaches, but are not understood well. Here, a new model that accounts for accelerations of wave-orbital velocities predicts ...
Marine microbial intact polar diacylglycerolipids and their application in the study of nutrient stress and bacterial production
(Massachusetts Institute of Technology, 2013)
Intact polar diacylglycerolipids (IP-DAGs) were used to study microbial dynamics in the surface ocean. IP-DAGs from surface ocean seawater were quantified using high performance liquid chromatography-mass spectrometry ...