Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"deep-marine"”.
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Salt In The Deep Marine
… <p>Rachel Allison Bollinger: Salt in the Deep Marine</p> <p>(Under the direction of Dr. Christine Butterworth-McDermott and Dr. John McDermott)</p> <p>The surface tension present between liquid and air is due to the fact that liquid molecules are highly attractive to one another. Because …
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Deep-marine depositional systems of the western North Atlantic: Insights into climate and passive-margin evolution
… to a given depositional environment, deposits in deep-marine settings, particularly passive margins, provide a unique, long-term record of paleoclimate, paleoceanography, and tectonics affecting the basin in question. Whereas deep-marine strata may be used to answer myriad of questions regarding …
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Sedimentary texture similarities in deep-marine channel sandstones: Insights from petrographic characterization of Cretaceous Tres Pasos Formation, Chile
Deep-marine channels are conduits for turbidity currents that transport sediment from the continental shelf to the deep ocean floor. Along the way, some of the sediment suspended in the current is deposited within the channel whereas the rest of the sediment makes its way to deeper water to …
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Multi-scale deep-marine stratigraphic expressions in the Cretaceous Magallanes Basin, Chile: Implications for depositional architecture and basin evolution
Submarine channel-levee systems represent one of the most significant features of sediment transfer on Earth and one of the final segments in source-to-sink routing systems. As such, they serve as conduits as well as intermediate or final storage for large volumes of sediment, paleoenvironmental …
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Sedimentological lithofacies, internal architecture and evolution of deep marine fans of the Tithonian Angel Formation, Northwestern Dampier Sub-basin, North West Shelf, Australia.
… architecture and depositional evolution of the deep marine Tithonian succession of the Angel Formation located within the Dampier Sub-basin on the North West Shelf of Australia. It is a mature basin containing 149 hydrocarbon fields with combined reserves of 34tcf of gas, 1037mmbbls of …
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Basin Evolution and Slope System Dynamics of the Cretaceous Magallanes Basin, Chilean Patagonia
Deep-marine basins linked to active continental margins by sloped ocean-floor profiles commonlyhost the final accumulation of sediment that was eroded and transported from the continents. Thedeep-marine sediment archives preserved in these settings commonly offer the most completerecord of sediment …
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Bedrock target analysis for ROV rockdrill sampling and existing sample stratigraphic and mineralogical verification (BeTar_drill)
… structures, such as fault escarpments and submarine canyon systems. This terrain is exemplified on the Irish Atlantic Margin (IAM) by the Porcupine Bank Canyon (PBC). Bedrock has been found here in the past, however, surveying in these areas continues to be a difficult task due to issues …
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Sedimentology of the Catalina Dome and taxonomy of Mistaken Point small fronds
… Basin, in which the oldest known complex, deep marine organisms lived, by a factor of two. Mudstone-rich turbidites dominate the succession, and a lack of wave-generated structures or other shallow-water indicators support the interpretation that the depositional environment was …
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Sedimentology and Stratigraphy of a Matrix-Poor to Matrix-Rich Depositional Continuum in Proximal Basin Floor Strata, Upper Kaza Group, Windermere Supergroup, B.C., Canada.
… mud matrix) have been increasingly recognized in deep-marine systems. These beds are thought to be deposited from mud-rich flows in a distal basin-floor setting; however they remain poorly understood, partly because details of lateral lithological changes are poorly known. In this study, …
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A remedial approach to stabilize a deep excavation in Singapore
… improvement methods are commonly adopted in deep excavation to minimize wall deflection, wall bending moment and strut force. In this thesis a different approach to the application of ground improvement techniques is analyzed in the form of a parametric study developed with the use of a …
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Accurate AVO modelling and reservoir characterisation of the upper cretaceous deepwater reservoirs in the Vøring Basin.
… The Vøring basin is an area dominated by deep-marine reservoirs which are a major play in oil and gas exploration. The acquired wells, three of which are dry wells and two of which are gas discoveries, targeted Upper Cretaceous reservoirs formed by deep-marine slope and submarine fan type …
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The sedimentary record of seafloor uplift
Deep-marine environments are influenced by vertical seafloor movements, such as uplift and subsidence. The vertical deformation of the seafloor and subsurface influences sedimentary systems, hydrocarbon distribution, paleoclimate archives, and poses significant geohazard risks. This thesis …
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RADIOLARIAN BIOSTRATIGRAPHIC AND PALEOCEANOGRAPHIC STUDIES OF MONTEREY-LIKE ROCKS OF THE HUMBOLDT BASIN, NORTHERN CALIFORNIA
… indicative of low oxygen conditions, cold deep forms, and radiolarians associated with the California Current indicate that Paleoceanic circulation in the Humboldt Basin region at 6.5ma was similar to "normal" (anti-El Nino-like) circulation of Recent time. Depositional environments and …
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Stratabound and Stratiform Sulphide Mineralisation in the Scottish Dalradian
… hydrothermal systems during the development of deep-marine basins. Promisingly, stratabound-sulphide deposits at each locality hosted an amount of cobalt that was found to be higher than the average expected parts-per-million (ppm). Further research into these and similar stratabound-sulphide …
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Multi-Disciplinary Analyses of Outcropping Late Cretaceous Clinoform Stratigraphy, Magallanes Basin, Chile
… and associated fluids move from continents to deep-marine basins. Clinoforms, shelf-edge deltas, submarine canyons, and deep-water channels are central components of these systems, yet their stratigraphic architecture, sediment-routing behaviour, fluid trapping potential, and influence on …
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Updip Sequence Development on a Mixed Carbonate-Siliciclastic Continental Shelf, Paleogene, North Carolina, Eastern U.S.A.
… It is overlain by a thin Paleocene sequence of deeper offshore, glauconitic fine sands to deep marine silt-shale. Five regionally mappable, vertically stacked Eocene sequences are 0 to 30 m thick and contain coastal sands, shoreface sandy-mollusk rudstones, offshore bryozoan …
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Cenozoic stratigraphic and tectonic history of the Grenada and Tobago basins as determined from marine seismic data, wells, and onland geology
… structure, smooth basement character, deep-marine seismic facies, and similar Paleogene sediment thickness suggest that the two basins formed as a single, Paleogene forearc basin related to the now dormant Aves Ridge. This single forearc basin continued to open through flexural …
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Depositional environments and diagenesis, Winnipegosis Formation (Middle Devonian), Williston Basin, North Dakota
… seven environments of deposition which include deep basin, deep shelf, shallow shelf, reef, lagoon, tidal flat, and evaporite basin. The deposition of the Winnipegosis and Prairie Formations were inter-related and occurred during six episodes. Following a brief hiatus separating the underlying …
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A seismic study on the structural evolution of the North Celtic Sea Basin, offshore Ireland
… Variscan thrusts, the Morrigan Fault. A deep extension of the Morrigan Fault has been mapped by previous authors on deep refraction seismic data as a south -easterly dipping low angle detachment. The other Variscan thrusts became locked, possibly against the granites within the Labadie …
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The Challenges and Solutions of Green Seismic Survey: Imaging Deep Seafloor Structures with Cruise TN-373 Reflection Data
… that utilized small airgun sources to image deep seafloor structures. The research vessel sailed across the South Atlantic Ocean from November through December of 2019 to collect more than 3000 km of 2D reflection seismic lines. The dataset modernizes existing seismic data over the area to …
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