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 14 of 14 for “"tectonic plates"”.
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To Sing Of Mountains
… of time; others mimic the mountains and shifting tectonic plates by use of shape and form; all serve as meditations on life and living.
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Melt generation in the Earth's mantle at Convergent Plate Margins
… in this thesis document how the recycling of tectonic plates at subduction zones has a profound effect on the melting behavior of the Earth's mantle. Two experimental studies (Chapters 1 and 2) of the melting behavior of mantle peridotite demonstrate that the forefathers of arc magmas are …
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(DIS)JOINING (DIS)JUNCTURE
… Hall in "Maps of Emergency: Fault Lines and Tectonic Plates": ..."Of course, fault lines… are also productive. Those escaping the vertical lines of force forge new lateral connections. New formations appear where older ones disappear beneath the sand. Borders, which divide, become sites of …
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Receiver function imaging of mantle transition zone discontinuities beneath Alaska
"Subduction of tectonic plates is one of the most important tectonic processes, yet many aspects of subduction zone geodynamics remain unsolved and poorly understood, such as the depth extent of the subducted slab and its geometry. The Alaska subduction zone, which is associated with the subduction …
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'Exorcising the curse of Sisyphus': English Catholic education and the possibiity of authenticity. A philosophical study after Heidegger, Derrida, Lonergan and Boeve
… expressed as their being caught within the 'tectonic plates' of late modernity: a 'violence' within which the individual 'wins' or 'loses' as seemingly unyielding cultural narratives drive against each other akin to the geological violence at the root of this metaphorical expression. While a …
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Effects Of Subduction History On Mantle Convection: Implications For True Polar Wander And Dynamic Topography
The movement of Earth’s tectonic plates is a fundamental input for countless studies in Earth science, including global atmospheric and oceanic circulation, sedimentation and erosion, maturation and location of fossil fuels, and the dynamics of Earth’s deep interior. However, the uncertainty of …
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Investigating the Kinematics and Dynamics of Strain Localization in the Northern Western Branch of the East African Rift System
… evidence of a divergent plate boundary, where tectonic plates are breaking apart. The northern Western Branch of the East African Rift System (EARS) is an active continental rift that forms part of the divergent plate boundary between the Nubian plate and Victoria microplate, comprising …
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New Constraints For Convergent Margin Plate Tectonic Reconstructions From Imaged And Predicted Mantle Structure
… of the Earth surface lacks sufficient plate tectonic constraints by the early Cenozoic ~50 Ma, increasing to >60% uncertainty by the Late Jurassic. The most significant global plate model uncertainties can be traced to convergent margins, where tectonic plates are lost due to subduction. Our …
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Mantle melting processes: evidences from ophiolites, large igneous provinces, and intraplate seamounts
… processes in the mantle have a key role in plate tectonics and in the most colossal phenomena in the Earth, like large igneous provinces, mantle plume upwellings, and the constant growth of the planet's tectonic plates. In this study we use the geochemical and petrological evidence preserved in …
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Seismic attenuation of regional phases in the northern Middle East and the Tibetan Plateau
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI-COLUMBIA AT AUTHOR'S REQUEST.] I study the regional seismic phase attenuation to (1) infer rheology and temperature of the crust and uppermost mantle and to (2) develop reliable and transportable nuclear discriminants. The methods used in my research …
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GPS based analysis of earthquake induced phenomena at the Sunda Arc
… natural hazards. Complex interaction of several tectonic plates with high relative velocities leads to approximately two earthquakes with magnitude Mw>7 every year, being more than 15% of the events worldwide. Earthquakes with magnitude above 9 happen far more infrequently, but with catastrophic …
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3d rheological modelling in the aegean region and its importance for the seismotectonics of the area
… broader Aegean Region, for the purpose of seismotectonic and seismic hazard characterization. The concept behind this project resides in the link between rheological parameters obtained from the modelling and the properties of the corresponding rocks in terms of seismogenic behaviour. For the …
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Evolução tectônica do segmento extremo leste da Margem Equatorial brasileira: contribuição do mapeamento estrutural (onshore) e da modelagem física
… together define a zigzag geometry. Two distinct tectonic domains occur in the ETM: (i) the extremity regions characterized by oblique deformation with intense rotation and tilting of the substrate; and (ii) the central region dominated by transcurrent (and oblique) deformation, with the presence …
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Tectonic and climatic control on the evolution of the Himalayan mountain front
… causing variations of sediment flux and tectonic activity, is therefore one of the most challenging tasks in understanding the spatiotemporal evolution of active mountain belts. The Himalayan mountain belt is one of the most significant Cenozoic collisional mountain belt, formed due to …