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norskMastergradsoppgaver i geologi: Nye registreringer
Viser treff 201-220 av 296
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Geomorphological study of the rock-slope failure at Adjet, Storfjord, Troms
(Master thesis; Mastergradsoppgave, 2015-06-06)Norway is known for its steep mountains and many fjords. This landscape provides the potential for large rock-slope failures (RSFs) which, in turn, can cause other catastrophic hazards, e.g. tsunamis. In Troms County, northern Norway, many RSFs are found east and west of the Lyngen peninsula, within an area of discontinuous permafrost. The RSF at Adjet is located southeast of the Lyngen peninsula. ... -
High-resolution study of selected Dansgaard- Oeschger events and Heinrich event 4 42,189–33,393 cal. years BP. Gravity core JM11-FI-15GC from Fugløy Ridge, northeastern Faeroe Islands Margin
(Master thesis; Mastergradsoppgave, 2015-05-15)The focus of this thesis was selected Dansgaard-Oeschger (D-O) events and Heinrich event 4 (H4). A gravity core, JM11-FI-15GC, from Fugløy Ridge was used for the investigation. The location of the core site is important due the fact that the Faeroe- Shetland Channel is a key area in understanding the changes in circulation during the last glacial period. In total there were eighteen D-O climatic ... -
Structural and geochemical mapping of a Fe-mineralized quartz-mica rich unit in the Ringvassøya Greenstone Belt, West Troms Basement Complex
(Master thesis; Mastergradsoppgave, 2015-05-28)Ringvassøy is one of a chain of large coastal islands representing the Archaean to Paleoproterozoic West Troms Basement Complex (WTBC), west of the Caledonides. On Ringvassøy, a basement of mainly tonalitic gneiss is overlain by the Ringvassøy Greenstone Belt (RGB), which is metamorphosed up to middle amphibolite facies. Tonalitic gneiss in the west and southeast of the island has U–Pb zircon ages ... -
Dannelse og utvikling av submarine kanjoner på kontinentalskråningen utenfor Lofoten
(Master thesis; Mastergradsoppgave, 2015-05-15)Tre kanjoner på kontinentalskråningen utenfor Lofoten er studert ut fra multistråle batymetridata, høyoppløselig seismiske data og foto av havbunnssedimenter. Formålet med denne studien er å diskutere dannelse, utviklingen av og den yngste aktiviteten i de tre kanjonene. To hovedhypoteser vedrørende kanjoners dannelse råder i dag; dannelse fra bunn av kontinentalskråningen og oppover eller fra ... -
A comparative seismic study of gas chimney structures from active and dormant seepage sites offshore mid-Norway and west-Svalbard
(Master thesis; Mastergradsoppgave, 2015-05-15)Understanding the fluid flow and the related fluid expulsion from gas chimneys and pipe structures is very important to our environment, since seeping methane has a great influence on our Earth’s climate. Chimneys are found in many places in the world, for instance at the Vestnesa ridge offshore western Svalbard and at the Nyegga region on the mid Norwegian margin. Plumbing systems and chimney ... -
Reconstruction of Holocene Paleoenvironment in Smeerenburgfjorden, northwest Svalbard based on benthic foraminifera and sedimentological investigations
(Master thesis; Mastergradsoppgave, 2015-05-16)Two gravity cores JM06-024-GC3 and JM07-049-GC1 from Smeerenburgfjorden at the northwestern corner of Svalbard have been investigated for the distribution pattern of the benthic foraminiferal faunas. The oxygen and carbon isotope values in benthic foraminifera were analysed and together with other proxy data such as ice rafted debris (IRD), were used in order to reconstruct the paleoceanography and ... -
Sedimentary processes and paleoenvironments in Moskusoksefjord and Nordfjord, North-East Greenland.
(Master thesis; Mastergradsoppgave, 2015-05-15)Multi-proxy analyses of five sediment cores (including lithostratigraphy, physical properties and XRF-scanning) and analyses of swath bathymetry and high resolution seismic data were integrated in order to reconstruct the Holocene glacial history and paleoenvironment of Moskusoksefjord and inner parts of Nordfjord, North-East Greenland. In Moskusoksefjord, the large-scale bathymetry is divided ... -
A shallow gas flat spot anomaly in the Bjørnøyrenna Fault Complex in the Barents Sea: processing and interpretation of P-Cable 3D seismic data
(Master thesis; Mastergradsoppgave, 2015-05-18)This thesis analyzed P-Cable high-resolution 3D seismic data from the Bear Island Fault Complex in the southwestern Barents Sea acquired during a Helmer Hanssen cruise in 2012. Hence, the thesis is divided into two parts: the first part of the thesis focuses on the steps taken during the processing of the raw seismic data from the Lundin 2012 Area-A survey located at the Bear Island Trough Fault ... -
Undersøkelse av ustabilt fjellparti ved Adjet, Storfjord, Troms. Betydningen av ulike kategorier av glideplan i berggrunnen og mekanismer for utglidning
(Master thesis; Mastergradsoppgave, 2015-05-15)Strukturelle element i berggrunnen kan ha stor betydning for utvikling av ustabile fjellparti og fjellskred. I dette studiet vil det fokuseres på hvilken rolle strukturelle element i berggrunnen har hatt å si for skredhendelsene og deformasjonen i området og hvordan disse har preget det geologiske bildet. Det ustabile fjellpartiet er lokalisert på fjellet Adjet ved tettstedet Skibotn i Storfjord ... -
Sedimentary processes and paleoenvironments in St. Jonsfjorden, western Spitsbergen
(Master thesis; Mastergradsoppgave, 2015-05-19)Multibeam (swath) bathymetry, high-resolution two-dimensional seismic (chirp) profiles and four gravity cores have been analyzed to reconstruct the Late Weichselian and Holocene sedimentary environments and glacier dynamics in St Jonsfjorden, central western Spitsbergen (Svalbard). The sediment cores comprise stratified glacimarine sediments with varying amounts of ice rafted debris. Three cores ... -
Faulting and the relationship to fluid migration and shallow gas accumulation in the Hammerfest Basin, SW Barents Sea
(Master thesis; Mastergradsoppgave, 2015-05-01)This thesis has focused its efforts to identify and map faults and their relationships to shallow gas accumulations and fluid flow features. The area of this investigation lies in the hydrocarbon-prone Hammerfest Basin in the southwestern Barents Sea, above the Base Cretaceous. Nine 3D seismic datasets were used in this study, aiming to improve the knowledge of the timing of the tectonic activity ... -
Geomorfologisk og strukturgeologisk studium av fjellskredet ved Falsnesfjellet, Storfjord, Troms
(Master thesis; Mastergradsoppgave, 2014-04-08)Geomorfologisk og strukturgeologisk studium av fjellskredet ved Falsnesfjellet, Storfjord, Troms -
Strukturer og mineralomvandling i Stensundtjern malmfelt, og dannelse av jernmalmene i Dunderlandsformasjonen.
(Master thesis; Mastergradsoppgave, 2014-12-14)Stensundtjern ligger ved Storforshei, en hall times kjøring fra Mo i Rana. Denne mineralforekomsten er en del av en større jernmineralisering som ligger i Dunderlandsdalen. Jernmineraliseringen her har vært kjent siden før 1800 og har gjennom årenes løp vært forsøkt drevet i flere perioder. De første kildene vi har fra området er fra 1799 da Trondheims-bedriften Mostadsmarkens Jernverk gjorde krav ... -
Post-glacial sedimentary processes and slope instabilities off Nordnesfjellet, Lyngenfjorden, northern Norway
(Master thesis; Mastergradsoppgave, 2014-11-15)The Lyngen- and Storfjorden system, Troms County, northern Norway, is surrounded by an alpine landscape, partly with steep mountain sides. Parts of the ~700 m high mountain Nordnesfjellet, on the eastern side of the fjord, are currently moving downslope, and could in the event of sudden failure generate tsunami waves which would affect low-lying areas within a larger region. The main objective of ... -
Hydrothermal Vent Activities At the Gjallar Ridge in the Vøring Basin, mid-Norway
(Master thesis; Mastergradsoppgave, 2014-11-21)The 3D seismic enable a better understanding of phreatomagmatic activity that occurred at the Gjallar ridge in the Vøring basin, mid-Norway. Structures associated with this activity were imaged and a causality relationship was established. Those structures included hydrothermal vent complexes, sill complexes and faults. The Kai formation significantly affected by polygonal faulting that were likely ... -
Multibeam bathymetry and backscatter data analysis of pockmarks at Vestnesa Ridge off NW-Svalbard
(Master thesis; Mastergradsoppgave, 2014-11-09)The Vestnesa Ridge is an elongated sediment drift situated at 79o N on the northwest Svalbard margin in the Fram Strait. It is one of the northernmost documented oceanic gas hydrate provinces. The narrow southeastern part of the ridge is characterized by pockmarks that line up along the apex of the crest. Some of these pockmarks are continuously venting gas while some are inactive. This study looks ... -
Hydrothermal Cu-Zn mineralization at Vanna, West Troms Basement Complex: A geochemical analysis of Archean and Proterozoic rocks with focus on sulfide genesis
(Master thesis; Mastergradsoppgave, 2014-08-16)The hydrothermal Vannareid Cu-Zn mineralization is located on the island of Vanna, West Troms Basement Complex. It was discovered in 2008 and was subject of Store Norske Gull AS' exploration project in 2012. The mineralization is situated along the border between the Archean granitoid basement intruded by tholeiitic and calc-alkaline dykes, and the overlying Neoproterozoic metasedimentary rocks of ... -
Sedimentological and Stratigraphic study of glaciomarine clays and postglacial beach deposits exposed in a raised coastal section beyond the Tromsø Lyngen (Younger Dryas) end moraine at Spåkenes, Lyngen, northern Norway
(Master thesis; Mastergradsoppgave, 2014-05-15)Thick succession of suspension settled muds, deposited from meltwater plumes, which are frequently interbedded with sandy mass flows deposits. Between conformable beds, discrete units have been in intensely deformed, often into large recumbent folds with complex structure. Suspension settled muds are observed in three distinct structural facies, namely massive clays, rhythmically banded muds and ... -
Late Weichselian and Holocene sedimentary processes and glacier dynamics in Woodfjorden, Bockfjorden and Liefdefjorden, North Spitsbergen
(Master thesis; Mastergradsoppgave, 2014-05-31)Abstract Swath bathymetry, high resolution seismic data and sediment cores were analyzed to reconstruct the Late Weichselian and Holocene sedimentary environments and glacier dynamics in Woodfjorden, Bockfjorden and Liefdefjorden, north Spitsbergen. Mega-scale glacial-lineations provide evidence of fast-flowing grounded ice draining the northwestern parts of the Late Weichselian Svalbard Barents ... -
Onshore-offshore correlation in the Andfjorden area and the structural controls on the opening and evolution of the Mesozoic sedimentary basins on Andøya and Andfjorden, northern Norway
(Master thesis; Mastergradsoppgave, 2014-05-14)Onshore-offshore correlation of brittle faults has been undertaken in the Andfjorden area defining the boundary between the passive Lofoten-Vesterålen margin and the transform SW Barents Sea margin. This study has focused its efforts on onshore mapping of faults and fractures, the mapping of offshore faults and associated basin-ridge systems from seismic interpretation and the link between fault ...
