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 115 for “"geodynamic"”.
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Geodynamic Modeling Applied to Venus
Modern geodynamic modeling is more complex than ever, and has been used to answer questions about Earth pertaining to the dynamics of the convecting mantle and core, layers humans have never directly interacted with. While the insights gleaned from these models cannot be argued, it is important to …
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Geodynamic Modeling of Mars Constrained by InSight
Through geodynamic modeling, I investigate how Mars could have produced the extensive volcanism required to form the Tharsis rise early in its history, as well as continue to produce small amounts of melt up to present-day, in order to account for the evidence of limited geologically recent …
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Using 3D geodynamic slab models in tectonic reconstruction
In this thesis, two regions of convergent Cenozoic tectonics are investigated, and recent subduction is reconstructed using 3D models that map the surface of subducted slabs in the mantle. In Iran, the subduction of the Neotethys ocean prior to the collision of the Arabian continent with Eurasia is …
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Using 3D geodynamic slab models in tectonic reconstruction
In this thesis, two regions of convergent Cenozoic tectonics are investigated, and recent subduction is reconstructed using 3D models that map the surface of subducted slabs in the mantle. In Iran, the subduction of the Neotethys ocean prior to the collision of the Arabian continent with Eurasia is …
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Climatic and geodynamic influences on ocean island geomorphology
With homogeneous bedrock, dramatic rainfall gradients, and remnant surfaces that constrain their age, initial topography, and vertical motions relative to sea level, volcanic ocean islands provide an exceptional natural experiment in landscape evolution. Analyses traversing gradients in island …
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Temporal gravity changes related to geodynamic phenomena and geomechanical processes
… dealing with gravity changes related to various geodynamic, geomechanical and hydrological processes and phenomena. In the first part of the Thesis the gravity changes are defined as a geophysical quantity. The two principal causative parameters are highlighted - variation in elevation of the …
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Understanding lithospheric and mantle dynamics using geodynamic models with data-assimilation
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Insights from geodynamic models into ice flow, mantle magmatism, and their interactions
In this thesis, I use geodynamic models to study processes within the Earth’s mantle and cryosphere. I begin by quantifying previously unconsidered sources of magmatic CO2. In Chapter 2, I predict how small concentrations of CO2 found in passively upwelling mantle throughout ocean basins may …
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Insights from geodynamic models into ice flow, mantle magmatism, and their interactions
In this thesis, I use geodynamic models to study processes within the Earth's mantle and cryosphere. I begin by quantifying previously unconsidered sources of magmatic CO₂. In Chapter 2, I predict how small concentrations of CO₂ found in passively upwelling mantle throughout ocean basins may …
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Geodetic and Geodynamic Constraints on Vertical Land Motions in the Chesapeake Bay
… and glacial isostatic adjustment. We perform geodynamic modeling to assess the influence of both processes on the region. We estimate present-day rates of dynamic topography using ASPECT (Advanced Solver for Planetary Evolution, Convection, and Tectonics) and vertical land motions due to …
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Geodynamic evolution and petroleum system of Abu Gharadig Basin, North Western Desert, Egypt
… deposited. To improve the understanding of the geodynamic evolution and the hydrocarbon potential of Abu Gharadig basin the aim of this work was to provide a better coverage of generation, migration, and accumulation of hydrocarbons and multivariable processes that occur during the long basin …
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Geophysical and Geochemical Constraints On the Geodynamic Origin of the Vrancea Seismogenic Zone Romania
… is presented whereby delamination initiates a geodynamic process like subduction but with the distinct absence of subducted oceanic lithosphere to produce the CGH lavas. The origin of the VSZ presented here suggests that the delamination of continental lithosphere is a process capable of …
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Geodynamic evolution of the Horoman peridotite, Japan : geochemical study of lithospheric and asthenospheric processes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1996.
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Icy Satellite Tectonic, Geodynamic and Mass Wasting Surface Features: Constraints on Interior Processes and Evolution
<p>Empirical data collected from mapping campaigns combined with modeling of geologic processes improves our understanding of planetary geology. Many planet- or satellite-scale processes cannot be reproduced in labs, thus analyzing surface features provides insights to confirm, discount, or improve …
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Geodynamic and Sedimentological Evolution of the Submarine Amorgos–Santorini Area: Insights into Volcanic–Tectonic Interactions
Η υποθαλάσσια περιοχή Σαντορίνης–Αμοργού στο νότιο Αιγαίο Πέλαγος αποτελείται από ένα σύστημα εφελκυστικών λεκανών και ηφαιστειακών κέντρων με κύριο προσανατολισμό ΒΑ–ΝΔ. Πρόκειται για μία από τις πλέον ηφαιστειακά και σεισμικά ενεργές περιοχές της ανατολικής Μεσογείου, όπου η έντονη σύζευξη …
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Studying subduction zone dynamics and continental evolution in South America using data-oriented geodynamic models
… evolution. For the first topic, we use geodynamic models with plate kinematics and seafloor ages as boundary conditions to reproduce the history of South American subduction since the Late Cretaceous. With this model and the constraints mentioned above, we attempt to investigate the …
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A Geodynamic Investigation of Continental Rifting and Mantle Rheology: Madagascar and East African Rift case studies
Continental rifting is an important geodynamic process during which the Earth's outer-most rigid shell undergoes continuous stretching resulting in continental break-up and theformation of new oceanic basins. The East African Rift System, which has two continentalsegments comprising largely of the …
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Geodynamic Development of the South China Block from Precambrian to Cretaceous: Constraints from Geology Geochemistry and Geochronology
… through time to further constrain potential geodynamic processes. Lithochemistry data are used to infer geodynamic setting for igneous activity or for protolith formation. Together, these various data permit one to distinguish between upper and lower plate settings and to identify rifted …
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Geodynamic Evolution of the Aegean Back-arc and its Implication for Associated Precious and Base Metal Mineralization
… sources, within a framework of the evolving geodynamic context and complex basement structure. Over 30 mineral occurrences, from Lavrion of Attica on the Greek mainland across the Cycladic archipelago to Milos and Santorini on the active South Aegean volcanic arc, were investigated, …
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