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norskMastergradsoppgaver i geologi: Nye registreringer
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Geomorfologiske undersøkelser av skråningsavsetninger og -prosesser i Kåfjorddalen i Troms
(Master thesis; Mastergradsoppgave, 2019-12-13)Hovedformålet med denne oppgaven er å beskrive og tolke skredavsetninger og -prosesser i den sørvestre dalsiden i Kåfjorddalen i Troms. I tillegg blir det gjort en overordnet vurdering av hvordan sedimenttransporten kan ha vært gjennom holocen og hvordan skredaktiviteten forventes å bli som følge av klimaendringene. Fjorten skredvifter er beskrevet og tolket. Beskrivelsene og tolkningene av ... -
Evolution of a rock slope failure at Skredkallen, Vannøya
(Master thesis; Mastergradsoppgave, 2019-11-15)Rock slope failures are known major contributors to landscape evolution in alpine Norway, and also pose a threat to people and infrastructure in the present day. By examining the history of rock slope failures at active rockslide sites an understanding of recurrence intervals and triggering mechanisms can be achieved. The focus of this study is to form a complete picture of the evolution of an area ... -
Geochemistry of rutile-bearing veins at Engebøfjellet, Naustdal, Norway.
(Master thesis; Mastergradsoppgave, 2018-11-15)The Engebøfjellet eclogite, located in Naustdal, Norway, contain quartz veins with large rutile (TiO2) phenocrystals. Trace element composition of rutile deposited in veins and in the eclogite matrix was analysed with the use of LA-ICP-MS. The Nb content decrease with increasing V in the rutile, and contents of these elements vary depending on depositional environment. One quartz vein associated ... -
Integrated Petrophysical and Seismic interpretation of Norne Field, Norway.
(Master thesis; Mastergradsoppgave, 2014-09-16)The aim of this thesis is to evaluate petrophysical properties and seismic interpretation of main reservoirs of Norne field in Mid Norwegian sea. Petrophysical evaluation helps in getting familiar with reservoir characterization using wireline logs data. The main concentration has been given to evaluate different reservoir properties i.e. porosity, shale volume, water saturation, hydrocarbon saturation, ... -
Identifying the Controlling Factors on Variable Glacial Modification of Bedrock Dominated Areas in Kongsfjorden, Svalbard
(Master thesis; Mastergradsoppgave, 2018-07-05)This thesis aims to better understand the variability of glacial erosion along glacial troughs located in high latitude settings, through a case study of Kongsfjorden, Svalbard. The research question of this thesis is to identify the controlling factors on variable glacial modification of the bedrock dominated areas in Kongsfjorden. Fieldwork was conducted to analyze bedrock structures and ... -
Morfologisk og sedimentologisk studium av det moderne og hevede Storfjorddeltaet, Troms
(Master thesis; Mastergradsoppgave, 2018-07-05)Denne oppgaven består i å undersøke det aktive Storfjorddeltaet med hensyn på morfologi og sedimentologi. Den hevede delen av deltaet ble også undersøkt ved 3 snitt for å finne ut hvordan deltaet hadde progradert for omtrent 3000 år siden og frem til i dag. Kartlegging og flybilder ble brukt, i tillegg til siling av prøver og datering av materiale. Resultatet ble at deltaet er klassifisert som et ... -
Source of CO2 in large Talc-Carbonate veins in serpentinites of the Zermatt-Saas Fee unit
(Master thesis; Mastergradsoppgave, 2018-07-03)The Zermatt-Saas Fee zone represents an ophiolitic sequence within the Western Alps derived from the paleo ocean Liguro-Piemontaise. The melting of the Unterer Theodulgletcher glacier newly uncovered some Tc-Mgs and Atg-Dol veins within serpentinite host rock. Both the serpentinite and veins are fresh as they have been protected from weathering by the glacier, which makes this area ideal for ... -
How is the carbon and oxygen isotope composition of foraminiferal tests influenced by methane seepage?
(Master thesis; Mastergradsoppgave, 2019-06-05)The focus of this thesis is how methane seepage influences foraminifera l tests. Specifically, How how carbon and oxygen isotopes in planktic foraminifera tests are influenced by methane seepage. The study area is Vestnesa Ridge were four gravity cores were collected during a CAGE cruise in 2013. The cores were taken both from the southern side, where flares has have been recorded, and from the ... -
Structural assessment and characterisation of the rock slope failure at Skredkallen, Vannøya. Structural analysis using field and desktop methods
(Master thesis; Mastergradsoppgave, 2019-05-15)The University of Tromsø has carried out multiple studies by master students on unstable rock slopes (URS) in Troms County, Northern Norway. This thesis differs from other studies in Troms as Skredkallen is located in Pre-Cambrian rocks as part of West Troms Basement Complex (WTBC). The rocks of the WTBC have been subjected to multiple phases of deformation, and the main structural features from ... -
Structural assessment and characterization of the unstable rock slopes at Mellomfjellet, Nordreisa
(Master thesis; Mastergradsoppgave, 2019-05-15)The aim of this study has been to structurally assess and characterize the unstable rock slopes (URS) at Mellomfjellet using an interdisciplinary approach of structural geological analysis, geomorphological mapping, photogrammetry and remote sensing. The URS are located on the west-facing slopes of Mellomfjellet and display a dramatic geomorphology with deep ice filled fractures and clearly displaced ... -
Geochemical investigations of northern Norwegian fjord sediments - Sources and spatial variability of marine and terrigenous components
(Master thesis; Mastergradsoppgave, 2016-05-11)Fjords represent unique coastal marine environments with high sedimentation rates. They can be used for intensive investigations focusing on geochemical, mineralogical, biological, and sedimentological processes. In this study I investigate 42 surface sediment samples from the outer and inner parts of the Vestfjord, Ofotfjord, Tysfjord and tributary fjord arms in northern Norway. Samples were analysed ... -
Basin analysis and diagenetic investigations of Early and Middle Triassic sediments on Mariaholmen, Svalbard
(Master thesis; Mastergradsoppgave, 2016-05-09)Subsequent to a widespread hiatus at the top of the Permian on western Svalbard, the Triassic Vardebukta, Tvillingodden and Bravaisberget formations were deposited. In this thesis, the sedimentology, geochemistry and diagenesis are investigated to determine the depositional environment and basinal setting of the Triassic deposits. In the investigated profile on Mariaholmen, only the upper part ... -
Strukturell og kinematisk analyse av Skipsfjorddekket og underliggende bergarter i nordøstlige del av Vanna, Vest-Troms gneisregion
(Master thesis; Mastergradsoppgave, 2019-05-15)Vanna tilhører den nordøstlige delen av Vest-Troms gneisregion, og består av arkeiske til paleoproterozoiske bergarter, og deformasjonsstrukturer av antatt svekofennisk alder. Nordøst på Vanna er det nylig blitt avdekket en steiltstående kvartsfeltspatisk sekvens som tidligere er blitt kartlagt som en del av det sterkt folierte og delvis mylonittiserte Skipsfjorddekket. Denne studien har fokusert ... -
Cross-disciplinary investigation of gas seepage at Storbanken high and the Olga basin, The northern Barents Sea
(Master thesis; Mastergradsoppgave, 2019-05-15)The eastern parts of the northern Barents Sea is a little explored sector of the Barents Sea which currently is not open for petroleum activity. This thesis focuses on the processes and mechanisms controlling gas seepage activity in the Olga basin and Storbanken high. 2D seismic and bathymetric data has been correlated with water column acoustic data to identify gas bubbles in the water column and ... -
The Bigganjárgga Tillite re-visited: a stratigraphic and sedimentological study
(Master thesis; Mastergradsoppgave, 2019-05-15)The Neoproterozoic “tillite”-bearing sequences of the Smalfjord Formation in Varanger, northern Norway have retrieved considerable attention in geological literature since first described and discovered over a century ago. Much of the attention relates to the so-called Reusch’s Moraine also known as the Bigganjárgga Tillite, which rests directly on top of a striated sandstone surface pointing to ... -
Geometrisk og kinematisk analyse av duktile skjærsoner i metasedimentære og intrusive bergarter i Vannagruppen, Vest-Troms gneisregion, Troms, og deres relasjon til svekofenniske folde- og skyvestrukturer
(Master thesis; Mastergradsoppgave, 2019-05-15)Øya Vanna nordøst i Vest-Troms gneisregionen består av TTG-gneiser (2.8 Ga), 2.4 Ga mafiske intrusivganger, en overliggende metasedimentær enhet i sør kalt Vannagruppen intrudert av en dioritt (sill) datert til 2221 ± 3 Ma, og Skipsfjorddekket i nord, en allokton enhet skjøvet mot SØ. Studieområdet befinner seg sørøst på Vanna, i området Larstangen-Fakkekeila. Her opptrer metasedimentære bergarter ... -
Geometrisk og kinematisk analyse av paleoproterozoiske duktile skjærsoner i Skipsfjorddekkets undre del, Vanna, Vest-Troms gneisregionen, og relasjon til metasedimentære bergarter i Vannagruppen
(Master thesis; Mastergradsoppgave, 2019-05-13)Vannas geologi er unik, og strukturer av komplekse folde- og skyvebelter med antatt sensvekofennisk alder karakteriserer deformasjoner av neoarkeiske tonalittiske gneisbergarter (2,9-2,4 Ga), paleoproterozoiske metasedimentære og intrusive bergarter på øya, helt nord i Vest- Troms gneisregionen. Hovedhensikten med dette arbeidet har vært kartlegging og strukturell analyse av antatte metasedimentære ... -
Metamorphic evolution of the Passo Feio Complex (central part of the Dom Feliciano Belt, southern Brazil)
(Master thesis; Mastergradsoppgave, 2019-05-15)The Passo Feio Complex is considered as a part of the São Gabriel Terrane, located to the west of the Dom Feliciano Belt in the state of Rio Grande do Sul (Brazil), but shows numerous similarities with the easterly exposed Porongos Metamorphic Complex which is a part of the Schist Belt in that area. P-T phase equilibrium modelling of metamorphosed sedimentary rocks from the Passo Feio Complex was ... -
A structural, geomorphological and InSAR study of the unstable rock slopes at Mellomfjellet, Nordreisa
(Master thesis; Mastergradsoppgave, 2019-05-15)The focus of this study has been to combine structural data with morphological observations and displacement data to characterise the unstable rock slopes at Mellomfjellet. The site contains two instabilities (Mellomfjellet 1 and 2) and is located along a west-facing slope in Reisadalen, a glacially eroded valley, in Nordreisa, Troms. The bedrock consists mainly of Caledonian amphibolite and hornblende ... -
Strukturell kontroll av stratiform jernmalm ved Kvannevann øst, Dunderlandsdalen, Nordland
(Master thesis; Mastergradsoppgave, 2019-05-16)Stratiform jernmalm av verdensklasse fremgår i Dunderlandsdalen, der de prinsipielle malmmineralene består av hematitt og magnetitt. Jernmalmen tilhører Dunderlandsformasjonen, som er del av Ramnålidekket innenfor Rødingsfjell dekkekompleks i det øverste allokton av den kaledonske fjellkjeden. Sidebergartene til jernmalmen består av godt folierte glimmerskifere, metapsammitter og tykke lagpakker av ...
