Browsing Department of Earth Science by Title
Now showing items 214-233 of 694
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Generation of intermediate-depth earthquakes and the fate of subduction fluids : Insights from mantle wedge seismicity and case studies in the Western Hellenic subduction zone
(Doctoral thesis, 2019-06-07)The occurrence of intermediate depth earthquakes at 50-300 km depth in subduction zones is puzzling, because high temperatures and pressures at these depths do not allow standard brittle failure. Instead, two main candidate ... -
Geo-modelling of an exhumed reservoir cap rock succession, Utah, USA
(Master thesis, 2017-06-23)Carbon capture and storage (CCS) can potentially play an important role in mitigating global CO2 emissions. The storage sites must be understood in detail to ensure safe storage on a millennial time scale. Outcrop analogs ... -
Geo-modelling of paleokarst reservoirs - from cave-survey to geocellular paleokarst model
(Master thesis, 2016-11-20)Hydrocarbon reservoirs exhibiting features inherited from former karst processes acting on the reservoir rocks are relatively common worldwide. However, on the Norwegian continental shelf, paleokarst plays have only recently ... -
Geochemical and microtextural characteristics reflect the formation mechanics of laminated iron deposits at the Perle & Bruse and Troll Wall vent fields
(Master thesis, 2017-08-31)Located at the southern section of the Artic Mid-Ocean Ridge, the Jan Mayen Vent Fields (JMVF) consist of three main hydrothermal sites, the Troll Wall, Perle & Bruse and Soria Moria. These sites contain numerous Fe-deposits, ... -
Geochemistry of lava samples collected near the oceanic detachments at 13°N along the Mid-Atlantic Ridge
(Master thesis, 2017-09-25)The structure and composition of the oceanic lithosphere is mainly controled by the supply of magmatic melts to the ridge axis. At slow-spreading, mid-oceanic ridges are characterized by complex spreading styles, where ... -
Geochronology and tectonic setting of voluminous granitoids and related rocks and associated extensional structures in Dronning Maud Land (East Antarctica)
(Master thesis, 2011-06-15)The history of the tectonic evolution in central Dronning Maud Land (cDML), East Antarctica can be inferred from various zircon grains for U-Pb zircon age determination with the Laser-Ablation Inductively-Coupled-Plasma ... -
Geofysiske og sedimentologiske undersøkelser av israndavsetningene fremfor Esmarkmorenen, Rogaland
(Master thesis, 2016-09-01)Det første geologiske arbeidet som ble gjort i Forsand ble gjort av Jens Esmark på 1800- tallet, da han beskrev det vi i dag kaller Esmarkmorenen/Vassryggen og sletteområdet foran. Han konkluderte med at dette var ... -
Geological constraints on hydrocarbon contacts in the greater Norne area
(Master thesis, 2018-06-13)The understanding of the geological constraints on the position of fluid contacts is important for the evaluation of the remaining resources on the Norwegian Continental Shelf. Different mechanisms can lead to filled, ... -
Geological contraints on the position of hydrocarbon-contacts in the Gina Krog and Sleipner East areas
(Master thesis, 2018-08-22)Knowledge of the geological constrains on the position of hydrocarbon-water contacts are crucial in terms of hydrocarbon exploration. The controlling mechanisms have a large impact on the in-place volumes in a potential ... -
Geological controls on fluid flow and seepage in western Svalbard fjords, Norway. An integrated marine acoustic study
(Doctoral thesis, 2015-11-06)The study of seabed fluid flow facilitates assessment of gas hydrate accumulation, submarine geohazards, localizing shallow and deep hydrocarbon reservoirs. Other fluid flow related studies include for example the benthic ... -
Geological evolution and stratigraphic relationships of the ophiolitic terrane in the outer Hardangerfjord area: evidence from geochronology and geochemistry
(Master thesis, 2017-10-13)Field relations, geochemistry and U-Pb single zircon ages have provided new information about the rocks of the outer Hardangerfjord area that represent a part of the Upper Ordovician ophiolitic terrane of south-western ... -
Geometries of doleritic intrusions in central Spitsbergen, Svalbard: an integrated study of an onshore-offshore magmatic province with implications for CO2 sequestration
(Peer reviewed; Journal article, 2013)Igneous intrusions emplaced during the Early Cretaceous are well exposed in central Spitsbergen within the Permian–Jurassic sedimentary succession. The doleritic intrusions are collectively classified as the Diabasodden ... -
The geometry and evolution of deformation bands in volcaniclastic rocks: insights from Eastern Taiwan
(Master thesis, 2018-04-17)Deformation bands are millimeter to centimeter tabular zones formed by strain localization in porous, granular media, most commonly found in porous sandstones. They also occur in carbonates and volcaniclastics, but are ... -
The Geometry and Evolution of Supra-Salt Normal Fault Arrays
(Doctoral thesis, 2016-06-22)The structural style and evolution of normal fault arrays above mobile salt is less understood compared to those developed in rifts where strong variations in mechanical stratigraphy are absent. This research was performed ... -
Geomorfologiske og kvartærgeologiske studier i og omkring midtre Gudbrandsdal
(Master thesis, 1962) -
Geophysical investigation of the Hugin Fracture, a soft-sediment seafloor fracture on the Utsira High, North Sea. Implications for subsurface fluid migration
(Doctoral thesis, 2019)The 2011 discovery of the Hugin Fracture, a 3.5 km long seafloor fracture on the Utsira High, shows that large-scale, unexpected features can still be found in ostensibly wellmapped, highly industrialized offshore areas ... -
Gjennom grottekartlegging og kjemiske analyser studere lengdesnittet av Plurdalen og dannelsen av Pluragrotta
(Master thesis, 2015-05-31)Denne oppgaven har hatt som formål å studere lengdesnittet av Plurdalen i Rana. Metoden har vært tredelt i form av grottekartlegging, lokalisering av erosjonsbasis og utføring av kjemiske vannanalyser. Det ble kartlagt ... -
Gjennom grottekartlegging, kjemiske analyser av litologien og strukturgeologiske målinger, danne en plausibel dannelsesmodell for Burfjellgrotta, Rana, Nordland
(Master thesis, 2014-06-02)Denne oppgaven er en del av Glomdalsprosjektet og er knyttet opp til nykartleggingen av Burfjellgrotta høsten 2012. Den har som formål å bidra til økt innsikt i glasial påvirkning på grottedannelse i høyereliggende områder. ... -
Glacier dynamics in the fjords of Svalbard, inferred from submarine landforms and marine sediment cores
(Doctoral thesis, 2017-09-19)This thesis presents a reconstruction of the late Weichselian, deglacial and Holocene glacial history of the Svalbard fjords, focusing on eastern Svalbard. The study is based on high-resolution multibeam data, shallow ... -
Glacigenic sedimentation pulses triggered postglacial gas hydrate dissociation
(Peer reviewed; Journal article, 2018-02-12)Sediment cores from the south-eastern Nordic Seas simultaneously archive the variability of the Fennoscandian Ice Sheet (FIS), the British-Irish Ice Sheet (BIIS) and the regional oceanic conditions. This study aims to ...