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 1904 for “"Geological"”.
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Extending the geological calibration of the geological time scale
… climatic variations that are imprinted in the geological record.<br/>A speech-recognition method is adapted to provide an automated procedure to calibrate cyclic geological data to astronomical calculations. Synthetic data are used to test the performance of the new method. The new algorithm is …
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Extending the geological calibration of the geological time scale
… climatic variations that are imprinted in the geological record. A speech-recognition method is adapted to provide an automated procedure to calibrate cyclic geological data to astronomical calculations. Synthetic data are used to test the performance of the new method. The new algorithm is …
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Military applications of geological engineering
… the premise that military engineering and geological engineering are intellectually paired and overlapped in practice to a significant extent. Geological engineering is an established, albeit young, academic discipline that enjoys wide industry and civil demand and is supported by many …
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Topographical and geological survey, A
Maps are missing.
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High speed geological boundary layer flows
… investigation of high speed boundary layers in geological flows. In particular, it focuses on meteorite impact structures of the Martian double-layer ejecta (DLE) type and the Mount St. Helens eruption of 1980 which was hypothesized to be an underexpanded jet originally by Kieffer. Key questions …
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Geological constraints on Neoproterozoic glacial episodes
Neoproterozoic glacial episodes are amongst the most intense glaciations that the Earth has experienced, and are associated with major changes in the Earth System, such as the breakup of a supercontinent, the evolution of complex multicellular life and extreme geochemical perturbations. A …
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Geological applications of synthetic fluid inclusions
Vapor-saturated solubility relationships in the system NaCl-KCl-H₂0 have been determined by experimentally synthesizing fluid inclusions in quartz in the presence of known brine compositions and then measuring the dissolution temperatures of halite and/or sylvite daughter crystals within the …
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Role of fluids in geological processes
… of the planet and play an important role in many geological processes. Small aliquots of these fluids can be preserved in the geological record as fluid inclusions and can provide valuable information about the physical and chemical environment in which they formed. The ocean is the largest water …
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High Strain Rate Properties of Geological Materials
The dynamic response of various geological materials has been investigated through a series of plate impact experiments. The materials involved were supplied from various mines by De Beers and Rio Tinto and were generically termed: sandstone, scilified siltstone, kimberlite, quartz/feldspathic …
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Reliability of geotechnical systems considering geological anomaly
… geotechnical systems considering the presence of geological anomalies is developed. The proposed methodology consists of three major tasks: (i) modeling of the anomaly uncertainties and developing subsequent methods to assess their statistics, (ii) evaluating the effect of the different anomaly …
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The geological evolution of the eastern Richtersveld
… the magma determines - according to some models -geological position and extent of porphyry ore deposits, predictions could be made as to the probable site and extent of possible porphyry ore deposits, which are in agreement with preliminary results obtained during field work. The metamorphic and …
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Application of fluid inclusions in geological thermometry
… on many factors that vary within different geological environments. In order to determine minimum and acceptable Th ranges fro FIAs formed in different environments we investigated several geologic environments including sedimentary, metamorphic, and magmatic hydrothermal environments. The …
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The Role of Fluids in Geological Processes
The role and behavior of fluids in hydrothermal and magmatic environments have been studied. Experimental studies have been carried out to determine fluid properties, in natural environments and in both synthetic and natural fluid and melt inclusions. One of these studies dealt with the effect of …
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INTEGRATING SEDIMENTOLOGY, STRATIGRAPHY, GEOCHEMISTRY AND 3D GEOLOGICAL MODELLING: CONTRIBUTION TO GEOLOGICAL MAPPING FOR LAND KNOWLEDGE (CARG SHEET 081 ¿ROVERETO¿)
Geological maps are thematic representations illustrating the distribution of geological features exposed at the Earth’s surface. They are essential tools for land use planning, natural hazard mitigation, groundwater management, mineral resource exploration and environmental protection. In Italy, a …
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Underground Britain: public perceptions of the geological subsurface
… the visible and the invisible. Increasingly, new geological technologies such as hydraulic fracturing, carbon capture and storage (CCS) and radioactive waste disposal are drawing the public’s attention to the ‘invisible’ world of the geological subsurface. This presents unique communication …
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Impacts of Geological Variability on Carbon Storage Potential
… of CO2 below the surface of the Earth in geological media, with the most promising option for CO2 reservoirs being deep saline aquifers (DSA's). Unlike oil and gas reservoirs, deep saline aquifers are poorly characterized and the variability in their properties is large enough to have a …
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Geological Control of Floristic Composition in Amazonian Forests
… cation concentrations and an erosion-generated geological boundary. On the basis of this finding, we assembled continent-scale satellite image mosaics, and used these to search for additional discontinuities in western Amazonia. These mosaics indicate a floristic and geological discontinuity of …
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