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norskMastergradsoppgaver i geologi: Recent submissions
Now showing items 181-200 of 293
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Mid Miocene – Early Pliocene depositional environment on the northern part of the Mid-Norwegian Continental Shelf
(Master thesis; Mastergradsoppgave, 2016-05-15)Based on the study of 2D seismic data, this thesis have focused on the depositional environment during the deposition of the Kai formation (Mid-Miocene – Early Pliocene) on the Mid-Norwegian continental margin, in order to increase our knowledge of the evolution of the paleo-environment in the time-period right before the development of the large Northern Hemisphere ice sheets. Based on a seismic ... -
Reconstruction of ice stream retreat and palaeoceanographic development during the deglaciation and Holocene in the Storfjorden Trough, Svalbard. Based on geophysical data, benthic foraminiferal and sedimentological records
(Master thesis; Mastergradsoppgave, 2016-05-15)Here we investigate the retreat of a palaeo-ice stream and the subsequent palaeoceanographic development in the eastern Storfjorden Trough during the deglaciation and Holocene. The results are based on multibeam bathymetric and acoustic sub-bottom data, and a multiproxy analysis of a 14C dated sediment core (including benthic foraminifera, δ13C, δ18O and sedimentology). The ice stream experienced a ... -
Tracking the sources of marine sediments on the Norwegian Sea continental shelf by using geochemical properties of detrital quartz
(Master thesis; Mastergradsoppgave, 2016-05-11)Provenance studies reconstruct the erosion and transport history of sediments based on character and composition of deposited sedimentological records with implications for uplift and subsidence of the investigated area. This Master thesis presents a new combination of in situ analytical methods for qualitative provenance studies exemplified on siliciclastic sediments from three offshore exploration ... -
Sedimentation environment during deglaciation and Holocene in Southern Sentralbanken, Barents Sea
(Master thesis; Mastergradsoppgave, 2016-05-15)Grounding zone wedges and ridges throughout the Barents Sea gives good spatial constraints of the Late Weichselian deglaciation of the Barents Sea, however, little is known about Late Weichselian ice dynamics in the Central Barents Sea, primarily due to a lack of data. The study is carried out south of Sentralbanken in Sentralbankrenna which was likely an important source area feeding the Bjørnøyrenna ... -
Geology and Origin of the Cu-sulphide Ores in the Tynset-Alvdal region, southern Scandinavian Caledonides.
(Master thesis; Mastergradsoppgave, 2016-05-15)The Trondsvangen-Baugsberget Cu-bearing ore deposits are located in the Tynset-Alvdal region, Hedmark county, central Norway. The earliest documented work in these mines are from the late 17th century, with extensive mining between 1880 and 1911. The ore deposits are located within volcanic and metasedimentary sequences of the Lower Seve Nappes of the Middle Allochthon, Scandinavian Caledonides. The ... -
Morfologisk og sedimentologisk undersøkelse av sanduravsetninger foran Steindalsbreen, Lyngen, Tromsø
(Master thesis; Mastergradsoppgave, 2016-05-15)Steindalsbreen som er lokalisert i øvre del av Steindalen, Lyngen har etter siste istid smeltet tilbake. Dette har ført til suksessiv dannelse av tre sandursletter på lavgradients områder i dalbunnen som har blitt eksponert gradvis mens isbreen har smeltet tilbake. Alle tre har ulik alder, distanse til breen, samt horisontal og lateral utbredelse med ulik morfologi. De representerer forskjellig ... -
Interaction between ice streaming, glacitectonics and fluid flow in Håkjerringdjupet, SW Barents Sea
(Master thesis; Mastergradsoppgave, 2016-05-13)By using high resolution multibeam swath batymetry and 2- and 3D seismic data this thesis investigate the interactions between ice streaming, glacitectonics and fluid flow in Håkjerringdjupet. The source area for a glacitectonic hill-hole pair is located directly above spatial fluid accumulations assosiated to a fault complex. Glacitectonic deposits are found directly downstream from this area. We ... -
Seismic Modeling of Free Gas Occurrences and Bottom Simulation Reflection (BSR) Beneath Hydrate-bearing Sediments
(Master thesis; Mastergradsoppgave, 2016-01-17)This master thesis study uses seismic modeling to better understand the seismic response of the free gas that accumulates beneath hydrate-bearing sediments. To this end, I developed 12 different geological models ranging from very simple geometries to anticline structures. Within these models, I varied the distribution of free gas in the layers beneath the BSR. Sediment properties were taken from ... -
Late Triassic channel systems at the Loppa High, SW Barents Sea
(Master thesis; Mastergradsoppgave, 2015-12-23)The study is based on the 3D seismic dataset (LN09M01). The study area is located in the southwest Barents Sea, south-western flank of the Loppa High. In the SW Barents Sea, the Middle to Late Triassic interval incorporates relatively thick and widespread fluvial system in the Snadd Formation, which is characterized by distinctive abundance of channel bodies of varying shape and extend. During ... -
Correlation between changes in paleoceanography, paleoclimate and methane seepage on Vestnesa Ridge, eastern Fram Strait.
(Master thesis; Mastergradsoppgave, 2015-12-21)Two sediment cores HH14-002 GC and HH12-930 GC from Vestnesa Ridge in the eastern part of Fram Strain have been investigated to reconstruct the paleoclimate and paleoceanographic conditions during the last ~37,000 years, and to study possibly changes in emission of methane from the seabed through time. Core HH14-002 GC was taken from outside a pockmark, while core HH12-930 GC was taken from inside ... -
Palaeoceanographic development in Leirdjupet Trough, western Barents Sea, during the Holocene: evidence from foraminiferal, isotopic and sedimentological records
(Master thesis; Mastergradsoppgave, 2015-12-14)The gravity core HH14-012GC from Leirdjupet Trough has been investigated to detect changes in sedimentation and the variations in distribution patterns of marine microorganisms (Planktic and Benthic Foraminifera) and stable isotope values of their shells to reconstruct the variability of the inflow of Atlantic water to the study area. The results are compared to published paleodata records to ... -
Morphodynamics of a sandy beach during a one-year cycle at Sandbukt, Breivika, Troms, northern Norway
(Master thesis; Mastergradsoppgave, 2015-12-11)Six cross-shore beach profiles were monitored in a monthly interval at Sandbukt Beach at Breivikeidet, from October 2014 to October 2015, in order to study impact of storms on the beach profile and understand monthly, seasonal, and annual changes in the beach profile. Change in beach volume showed erosion and decrease in beach width on the southern part of the beach during the winter season, while ... -
Sedimentære avsetningsmiljøer og deglasiasjonshistorie i Kaldfjorden, Kvaløya, Troms Fylke
(Master thesis; Mastergradsoppgave, 2015-11-15)Multi-proxy analyser av tre sedimentkjerner som inkluderer litostratigrafi, fysiske egenskaper og XRF kjerne skanning, har sammen med analyser av høyoppløselig seismisk data blitt integrert for å kunne rekonstruere deglasiasjonshistorien og paleo miljøet i Kaldfjorden på Kvaløya, Troms fylke. I Kaldfjorden er stor-skala batymetrien delt inn i fire hoved-basseng med en sedimentmektighet på opptil ... -
Sedimentære avsetningsmiljøer og deglasiasjonshistorie i Ersfjorden, Kvaløya, Troms fylke.
(Master thesis; Mastergradsoppgave, 2015-11-15)«Multi-proxy» analyser av tre sedimentkjerneprøver (inkludert litostratigrafi, fysiske egenskaper, kornfordelingsanalyse og XRF skanning) og analyse av høyoppløselige seismiske data ble korrelert for å belyse sedimentasjonsprosesser og rekonstruere deglasiasjonshistorie, samt postglasialt sedimentasjonsmiljø under sen Weichsel og Holocen i Ersfjorden på Kvaløya, nordvest i Troms fylke. Tre ... -
Land sokkel korrelasjon av sprø mesozoiske og paleozoiske forkastninger i et profil over Vestfjordbassenget, Vestvågøya og Ribbebassenget.
(Master thesis; Mastergradsoppgave, 2015-08-19)Denne studien har studert geomorfologi og sprø forkastninger i et profil som strekker seg fra Vestfjordbassenget, over Vestvågøya/Lofotryggen og Ribbebassenget. Det flate slettelandskapet sentralt på Vestvågøya skiller seg ut fra landskapet ellers i Lofoten, som stor sett består av alpint fjellandskap. Slettelandskapet er omgitt av alpine asymmetriske fjell langs kysten i NØ og NV. Fjellenes brattside ... -
Analyse av mesozoiske forkastninger og asymmetriske landskap i et profil over Lofotryggen ved Leknes, Vestvågøy. Implikasjoner for dannelsen av roterte forkastningsblokker, riftrelaterte bassenger og nedforkastningen av Leknesgruppen
(Master thesis; Mastergradsoppgave, 2015-07-15)Dette studiet fokuserer på asymmetriske landskap og deres relasjon til sprø forkastninger, bassenger og roterte forkastningsblokker i et profil over Lofotryggen ved Leknes. Det anvendte datasettet består av sammensatte data fra feltarbeid og landskapsobservasjoner, batymatriske kart og seismiske profiler fra kontinentalsokkelen i Lofoten og Vesterålen. Lofotryggen er definert av to prominente NØ-SV ... -
Study of the Late Cenozoic depositional environment and seismic anomalies on the Trøndelag Platform using 3D seismic data
(Master thesis; Mastergradsoppgave, 2015-06-04)This thesis has focused on the depositional environment during the development of the Naust Formation in order to improve our understanding of the glacial history of the mid-Norwegian continental shelf, using 3D-seismic data from the Trænabanken and Sklinnadjupet area along with regional 2D-lines. Seismic anomalies have also been investigated to increase our understanding of fluid migration affecting ... -
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 ...
