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 12 of 12 for “"island formation"”.
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Configuration of the Pleistocene Surface Beneath Cat Island, Mississippi and Implications for Barrier Island Formation and Evolution
The mechanism of Holocene barrier formation aids in determining island geomorphologic responses to modifying climatic processes of the surrounding environment. The geometry and composition of local antecedent topography plays a role in barrier formation by providing an elevated base, nucleus for …
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Comparative Mitochondrial DNA Sequence Diversity in Isolated and Open Populations of Southern Flying Squirrels
… the impact of population subdivision-due to island formation--on the population genetics of Glaucomys volans. One island, one mainland, and one open population were investigated. A 367 nucleotide hypervariable region of mitochondrial DNA was sequenced in individuals from each population. …
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Depositional environments and history of the Winnipeg Group (Ordovician), Williston Basin, North Dakota
… Williston Basin, North Dakota, contains three formations. They are, in ascending order, the Black Island Formation, herein informally divided into lower and upper members, the Icebox Formation, and the Roughlock Formation. Strata of the Winnipeg Group (maximum thickness 400 ft., 122 m) …
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Holocene Formation and Evolution of Horn Island, Mississippi, USA
<p>Horn Island, one of the most stable barriers along the Mississippi-Alabama chain, provides critical habitat, helps regulate estuarine conditions in the Mississippi Sound, and reduces wave energy and storm surge for the mainland. This study integrates 2,200 km of high-resolution geophysics, 35 …
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Quantitative Electron Microscopy Studies of Silicon Germanium/silicon(001)
… to obtain data on how the strain in these islands effects the island's thermodynamic properties and kinetic evolution. In this work, we investigate the thermodynamics and kinetics of the Ge/Si(001) system. We have applied the new Abrupt Displacement Approximation using transmission electron …
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Environmental drivers of coastal evolution
… processes on the development of Pacific atoll islands, demonstrating that both sea-level change and temporal variations in storm-driven sediment transport mediated the timing and pace of island formation. Chapter 5 examines processes affecting atoll island development at the regional scale, …
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Growth, structure and magnetic properties of magnetron sputtered FePt thin films
… (iii) to control layer morphology supporting the formation of FePt - L10 self-organized isolated nanoislands towards an increase of the signal-to-noise ratio. In this study, dc magnetron sputtered FePt thin films on amorphous substrates were inve-stigated. The work is focalized on the correlation …
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Redefining the Treptichnus pedum zone at the Global Boundary Stratotype Section and Point (GSSP): A critical reassessment of the Ediacaran-Cambrian boundary.
… the late Ediacaran-early Cambrian. The Chapel Island Formation (CIF) of the Burin Peninsula, Newfoundland, provides an exceptional record of these innovations. Currently, the Global Boundary Stratotype Section and Point (GSSP) for the basal Cambrian boundary is located 2.4 m above the base of …
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Stress evolution of lithium alloying electrodes during cycling
… below 100mV resulted in crystalline Li₁₅Ge₄ formation which appeared as a tensile peak in the stress-capacity plots. Extended cycling of uncoated electrodes resulted in an irreversible reduction of stress but no loss in capacity, an outcome associated with the thin film fracturing while …
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Discontinuities in the Icebox Formation (Ordovician), Williston Basin, North Dakota and Montana
… Ordovician Winnipeg Group is composed of three formations; in ascending order, the Black Island Formation, the Icebox Formation, and the Roughlock Formation. The Icebox Formation is largely composed of shale. This work shows that discontinuities and coarser facies exist within the Icebox …
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Depositional environments and paleogeography of the Winnipeg Group (Ordovician), Williston Basin, North Dakota
… Ordovician) unconformably overlies the Deadwood Formation (Cambrian - Lower Ordovician) over most of North Dakota, except in the extreme eastern part, where it lies directly on Precambrian basement rocks. The Winnipeg is conformably overlain by the Red River Formation (Upper Ordovician). The …
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Using ecological concepts to restore the drylands of Namaqualand, South Africa
… more organic matter, nutrients and moisture, in ‘islands of fertility' as well as providing protection for seedlings from harsh elements, trampling and herbivory. The objectives of this thesis are to assess the efficacy of passive restoration and why it might not work, and to explore the value of …