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norskMastergradsoppgaver i geologi: Nye registreringer
Viser treff 101-120 av 286
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Regional structural analysis of rock slope failure types, mechanisms and controlling bedrock structures in Kåfjorden, Troms
(Master thesis; Mastergradsoppgave, 2018-05-15)Unstable areas producing rock slope failures come with large consequences. The understanding of why and where they might occur is necessary to mitigate damage and prevent casualties. A total of 133 unstable rock slopes have been detected in Troms, Northern Norway, evidencing that a great focus on these geohazards is important. This study has focused on seven unstable rock slopes in Kåfjorden, Troms, ... -
Steinsprang. Simulering, bevegelsesanalyse, struktur- og geomorfologisk undersøkelse av steinsprangområdet over Holmen ved Oksfjellet, Kåfjord, Troms.
(Master thesis; Mastergradsoppgave, 2018-05-14)Vurdering av skredfare og sikringstiltak i Kåfjord kommune i Troms viste i 2012 at en driftsbygning ved Holmen i Kåfjorddalen var utsatt for steinsprang fra Oksfjellet. Det er registrert flere steinsprang i tillegg til bevegelser i et mindre fjellparti under toppen av Oksfjellet. Studieområdet over Holmen har dermed et unikt potensiale for å studere flere problemstillinger tilknyttet steinsprang. ... -
Atmospheric circulation patterns associated with avalanche cycles in the Troms region
(Master thesis; Mastergradsoppgave, 2018-05-15)Snow avalanches endangers human lives and infrastructure situated in alpine environments during the winter season. Occurrence of avalanche activity is a product of processes taking place in the snow cover situated in steep terrain, which are governed by meteorological conditions induced by synoptic weather patterns. Avalanche forecasting can therefore better forecast avalanche activity if they ... -
Deposits and processes on the tide-influenced fjord-head delta in Dicksonfjorden, Svalbard
(Master thesis; Mastergradsoppgave, 2018-05-15)This study investigates for the first time the tide-influenced fjord-head delta in Dicksonfjorden, a fjord in central Spitsbergen, Svalbard. In order to examine the deposits and processes, sediment cores, surface observations and bulk samples have been obtained. Sedimentary facies, log transects and composite logs are presented. Sediment cores are dated with the 210Pb dating method to provide an ... -
Sedimentation in Lake Nordlaguna - a closed basin on Jan Mayen
(Master thesis; Mastergradsoppgave, 2018-05-15)This thesis focuses on the lake Nordlaguna on Jan Mayen. Nordlaguna is closed basin separated from the ocean by a barrier and surrounded by steep mountains and valleys. The lake has the potential to be a paleoclimatic archive and provide information about the unknown sea-level history of the island. When lake sediments are used in paleoclimatic studies, it is useful to acquire knowledge about the ... -
The Late Paleozoic development of the Ottar basin from seismic 3D interpretation
(Master thesis; Mastergradsoppgave, 2018-05-15)The Late Paleozoic sedimentary environments of the Ottar basin in the SW Barents Sea was studied using five 3D seismic surveys. By the use of seismic stratigraphic analysis and correlation to wells located in close proximity to the study area, the Paleozoic succession has been subdivided into 4 main units: Billefjorden Group (Late Devonian – Mid Carboniferous), Gipsdalen Group (Mid Carboniferous – ... -
The upper Paleozoic regional development of the Ottar basin from seismic 2D interpretation
(Master thesis; Mastergradsoppgave, 2018-05-15)The Ottar basin is not yet formally defined, but is a known structural element situated under the Bjarmeland Platform in the southwestern Barents Sea, buried beneath thick, flay-lying Mesozoic strata. This thesis focuses on delineating the informal upper Paleozoic Ottar basin. The delineation presented, is based on lateral/vertical variations in lithology and the surrounding tectonic setting of the ... -
Reconstruction of the bottom current strength of overflow water through the Faeroe-Shetland Channel in relation to climate change during the last 135,000 years
(Master thesis; Mastergradsoppgave, 2018-05-15)The focus of this thesis was to reconstruct the bottom current strength around the Faeroe Islands and relate it to the climate variability over the past 35,000 - 135,000 years and the Holocene, using the piston core, JM11-FI-19PC, from the North-eastern shelf of the Faeroe Islands. The core location is ideal for measuring the overflow from the Nordic Seas, as it is strategically placed on top of the ... -
Late Miocene Ice Rafting in the Iceland Sea. Evidence from coarse fraction analysis of ODP Site 907
(Master thesis; Mastergradsoppgave, 2018-05-15)A high-resolution sedimentary record from ODP Leg 151 Hole 907A has been investigated with sedimentological and geochemical methods to study the paleoenvironmental evolution of the Iceland Sea over a 1-Myr time interval in the Late Miocene. Climate deterioration characterizes the Neogene period, culminating in a transition to bipolar glaciations in the Late Pliocene (Thiede and Myhre, 1996). Ice ... -
Geometriske og kinematiske studier av post-kaledonske rift-margin forkastninger og bruddsett mellom Tjeldsundet og Bjarkøy, Sør-Troms.
(Master thesis; Mastergradsoppgave, 2018-05-15)Dette studiet har fokus på analyse og korrelasjon av post-kaledonske riftstrukturer i nordre Nordland og Sør-Troms, hvor målet er å sammenligne antatte paleozoiske og mesozoiske sprø forkastninger på land med lignende strukturer på havbunnen og i fjorder og sund. Ved bruk av høyoppløselige digitale verktøy fra land (kartverket, norgeibilder, norgei3d) og på havbunnen (mareano), tar denne masteroppgaven ... -
A combined 3D seismic and sedimentological study of the Lower Cretaceous succession in the northeastern part of the Nordkapp Basin
(Master thesis; Mastergradsoppgave, 2018-05-15)In this master’s thesis in geology, 3D seismic data and shallow stratigraphic cores were used to investigate the Lower Cretaceous succession in the central sub-basin of the Nordkapp Basin, Barents Shelf. The Lower Cretaceous is listed as a potential petroleum play model on the Barents Shelf, which makes the succession of interest for petroleum exploration. Recent studies of the have divided the ... -
The role of diapiric mound structures in the overburden fluid plumbing systems of the Vøring Basin
(Master thesis; Mastergradsoppgave, 2018-05-15)The overall aim of this thesis is to better understand the development and emplacement of diapiric mound features in the Vema Dome area, located in the Vøring basin on the mid-Norwegian continental margin. Two 3D seismic surveys, ST9603R99 and BPN9601, were interpreted in this study, in order to investigate the diapiric mounds and their relationship with an underlying fluid plumbing system including ... -
Interaction of submarine tailings with natural sediments in three northern Norwegian coastal areas. Sedimentological, mineralogical and geochemical constraints
(Master thesis; Mastergradsoppgave, 2018-05-15)Submarine tailings placements (STPs) is an alternative practice of handling mine waste, which involves deposition of tailings into submarine environments. However, the environmental impacts of STPs remain poorly understood. This thesis is a contribution to improve the understanding of how submarine tailings placements interact with natural sediments. It is based on multi-proxy analyses of 10 sediment ... -
Controls on fluid-flow systems in the Loppa High, SW Barents Sea
(Master thesis; Mastergradsoppgave, 2018-05-14)The SW Barents Sea is a large hydrocarbon-prone epicontinental Sea comprised of a complex mosaic of deep sedimentary basins and structural highs. Uplift and erosion have been affecting the area on a large scale since the Cenozoic and have had a major impact on the petroleum systems in the area, resulting in spillage of hydrocarbons. The origin of the hydrocarbons are from deep source rocks, which ... -
Sedimentary processes and paleoenvironment reconstructions in fjords comprising the Bergsfjord peninsula, Northern Norway
(Master thesis; Mastergradsoppgave, 2018-05-16)Low-resolution bathymetry, high-resolution seismic data (chirp) and multi-proxy analyses of three sediment gravity cores were integrated to study sedimentary processes with the purpose of reconstructing paleoenvironments in the three north Norwegian fjords Øksfjorden, Bergsfjorden and Jøkelfjorden since the last glacial. These three fjords are located on the Bergsfjorden peninsula and surround the ... -
A sedimentological study of the Lower Cretaceous Glitrefjellet Member, Svalbard
(Master thesis; Mastergradsoppgave, 2018-05-15)Detailed facies analysis of the Early Cretaceous Helvetiafjellet Formation (Barremian-Aptian) indicates deposition during a long-term transgression. The formation has received a lot of attention in previous published papers, particularly the lowermost Festningen Member has been detailed in numerous papers. However, the uppermost Glitrefjellet Member is typically poorly exposed in outcrops, and ... -
Characterisation of palaeosols in the Lower Cretaceous Helvetiafjellet Formation, Svalbard. Palaeo-climatic implications
(Master thesis; Mastergradsoppgave, 2018-05-15)Although the Cretaceous period is known to have been dominated by greenhouse conditions, the Early Cretaceous climatic conditions in Svalbard have been under some debate. Both indicators of warm climate such as coal seams, Ornithopod tracks and warm-water dinoflagellates, and indicators of cold climate such as arctic belemnites, glendonites and ice rafted debris have been reported. This study ... -
Natural and anthropogenic deposition in Bøkfjorden
(Master thesis; Mastergradsoppgave, 2018-05-15)The aim for this study is to characterise and distinguish natural and anthropogenic deposition in Bøkfjorden, and to identify the spreading and the impact of submarine tailings placements on the seafloor. The analyses are based on the integration of swath bathymetry, high-resolution seismics and multi-proxy analyses of four sediment cores The physical properties, including magnetic susceptibility ... -
Integrated characterization of the Upper Permian Kapp Starostin Formation in central Spitsbergen, Svalbard. From outcrop to geomodel.
(Master thesis; Mastergradsoppgave, 2018-05-14)Natural fractures significantly contribute to improved reservoir quality and recovery factor, especially in carbonate reservoirs. It is important to characterize the matrix and fracture properties, as well as their interaction, in order to describe the natural fracture system and improve the understanding of its effects on a reservoir. This study integrates multi-scale outcrop data from central ... -
U-Pb zircon provenance of metamorphosed clastic sediments in the Brusque Metamorphic Complex, Dom Feliciano Belt, southeastern Brazil
(Master thesis; Mastergradsoppgave, 2018-05-15)The Brusque Metamorphic Complex is situated in the northern part of the Dom Feliciano Belt in the state of Santa Catarina, southeastern Brazil. The complex is composed of Neoproterozoic sequences of volcanic and sedimentary rocks, which were folded and metamorphosed at greenschist to low-amphibolite facies conditions. U-Pb dating of detrital zircon grains in five samples of clastic metasedimentary ...
