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norskMastergradsoppgaver i geologi: Recent submissions
Now showing items 141-160 of 286
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Geomorfologisk kartlegging av Kjosen, Lyngen, Troms. Med fokus på snøskredavsetninger på Sultinden og Tytebærdalen
(Master thesis; Mastergradsoppgave, 2017-05-15)Snøskred er et utbredt faremoment i Norge og Troms, og har de siste årene tatt flere menneskeliv. Det investeres store ressurser i beskyttelsestiltak, og behovet for å forstå snøskred – hvor og når de kan inntreffe – vokser i takt med samfunnsutvikling og klimaendringer. Kjosen i Lyngen er utsatt for skred hvert år, og det har gått både hus og menneskeliv tapt her. Snøskred er også en geomorfologisk ... -
Geomorfologisk undersøkelse av skredvifter i Indre Kjosen, Lyngen, Troms, med fokus på snøskredavsetninger
(Master thesis; Mastergradsoppgave, 2017-05-16)Skred er et utbredt faremoment i Troms og utgjør en overhengende trussel for bebyggelse så vel som for infrastruktur. Skredene kan skade mennesker og menneskelige interesser, og det investeres store summer i sikringstiltak. Skredprosesser er med på å utvikle landskapet og kan spores på bakgrunn av mer eller mindre karakteristiske landformer, elementer og avsetninger, kalt skredindikatorer. ... -
Heinrich events of the late Pleistocene; evidence from a sediment core west of Jan Mayen. An analogue to present day ice sheet collapse?
(Master thesis; Mastergradsoppgave, 2017-05-15)A thorough lithological investigation of deep sea sediment core HH13-100GC has been undertaken, in order to investigate the climate and oceanographic fluctuations of the last glacial epoch. The cause of Heinrich events has remained an enigma ever since the discovery of Heinrich layers in the North Atlantic in the 1980s. Through a combination of XRF and X-ray imagery, geotechnical property investigation, ... -
The occurrence of flow transformations within sandy submarine fans: A case study from the Eocene on Spitsbergen
(Master thesis; Mastergradsoppgave, 2017-05-15)The Van Keulenfjorden transect on Spitsbergen offers valuable insight into submarine processes, with well exposed seismic scale clinoforms of Paleocene and Eocene age, which show the distribution of sediments from deltaic to basin floor environments. Several progradational submarine fans are preserved as cliffs on Hyrnestabben. They serve as an analogues to coarse grained submarine fans in provinces ... -
Investigating the variability of Atlantic water inflow to the southwestern Barents Sea through Bjørnøyrenna during the Late Glacial and Holocene based on benthic foraminifera and sediment properties.
(Master thesis; Mastergradsoppgave, 2017-05-15)This study is a part of the Barents Sea drill cuttings research initiative (BARCUT), investigating the inflow of Atlantic water to the southwestern Barents Sea during the Late Glacial and Holocene as well as providing data for future references. -
Study of millennial scale paleoclimatic and paleoceanographic changes in conjunction with variations in the East Greenland Current during the late Quaternary
(Master thesis; Mastergradsoppgave, 2017-05-15)Sediment core HH13-089GC (497 cm), collected from the continental slope off Scoresby Sund, East Greenland has been investigated in order to study paleoclimatic and paleoceanographic changes in the area in conjunction with variations in the East Greenland Current during the late Quaternary. The results are based on a multiproxy analysis of the sediment core, including faunal investigations of planktic- ... -
Sedimentological and geomorphological study of a postglacial fjord-side landslide and fan-delta complex at Russenes, inner Balsfjord, Troms county
(Master thesis; Mastergradsoppgave, 2017-05-15)A comprehensive study of the Russenes postglacial fjord-side fan delta and landslide complex has been undertaken in inner Balsfjord, Troms county, northern Norway. High-resolution bathymetric data, digital terrain models, aerial photography, ground penetrating radar profiling, radiocarbon dating and field mapping have been used to determine the geometry, structure, lithofacies and evolution of the ... -
Sedimentary environment and seismic anomalies of the upper Brygge and Kai formations on the northern part of the Mid-Norwegian Continental Shelf
(Master thesis; Mastergradsoppgave, 2017-05-15)The sedimentary environment and seismic anomalies of the upper Brygge and Kai formations on the northern part of the Mid-Norwegian Continental Shelf is analysed from 3D seismic data and the exploration well 6604/2-1. This was done in order to give a better understanding of the paleo-climatic development in the period before the establishment of the large-scale ice sheets of the Northern Hemisphere, ... -
Geomorfologisk analyse og skredkartlegging av Setså-området i Saltdal kommune, Nordland
(Master thesis; Mastergradsoppgave, 2017-05-14)Det norske fjord- og dallandskapet består høye fjell og bratte dalsider som er preget av skredaktivitet. Økende krav til framkommelighet langs vegnettet fører til at infrastrukturen er i stadig utvikling, og i mange tilfeller må vegbanen flyttes til mer skredsikre områder. Statens vegvesen er i gang med arbeidet for å flytte dagens Europaveg 6 gjennom Setså, Saltdal kommune, Nordland bort fra de ... -
Geomorfologisk og strukturgeologisk undersøkelse av ustabile skråninger og skredavsetninger i fjellområdet mellom Tromsøysundet og Ullsfjorden i Tromsf
(Master thesis; Mastergradsoppgave, 2017-05-15)Fjellskred er den naturkatastrofen i landet som kan gi høyest konsekvenser, og Troms fylke har flere registrerte ustabile fjellsider enn noe annet sted i landet. Dette gjør også at mange skred og ustabile fjellsider kan studeres innenfor et relativt lite geografisk område. Hensikten med denne oppgaven er å finne sammenhenger i parameterer i berggrunn og topografi som er med å initiere bevegelse i ... -
Integrated characterization of igneous intrusions in Central Spitsbergen
(Master thesis; Mastergradsoppgave, 2017-05-15)Igneous intrusions have a strong influence on petroleum systems, groundwater aquifers, and CO2 storage reservoirs, particularly because they can act as either barriers to, or carriers for fluid flow. This depends on several syn- and post emplacement processes, including fracture development in the intrusion and the host rocks, contact metamorphism of the host rocks, and hydrothermal activity. ... -
Thermal conditions and kinematics associated with final emplacement of the Lyngen nappe
(Master thesis; Mastergradsoppgave, 2017-05-15)The tectonic boundary of between the Lyngen magmatic complex and the underlaying Nordmannvik have been examined for kinematic indicators. This boundary is characterised by an amphibole facies garnet-mica-kyanite gneiss overlain by a greenschist facies amphibolite/meta-gabbro succession separated by heavily foliated and lineated garnet-mica schist, phyllites and quartzites. Two main populations of ... -
Microstructural changes during melt-assisted modification of quartzofeldspatic rocks. An example from the Eger Complex, North-Western Bohemian Massif
(Master thesis; Mastergradsoppgave, 2017-05-15)The Eger Complex is situated in the Saxothuringian domain at the western margin of Bohemian Massif (Czech Republic). Migmatitic orthogneisses associated with granofelses and high-pressure felsic granulites make up the majority of the complex, which is interpreted as an upper crystalline nappe exhumed from underneath the fore-arc Teplá-Barrandian domain during the Variscan orogeny. Studies conducted ... -
Drill cutting release in Ingøydjupet, SW Barents Sea from a well drilled in 1987, and its impact on benthic foraminifera
(Master thesis; Mastergradsoppgave, 2017-05-15)In the nearby areas of the SW Barents Sea, large hydrocarbon reserves have been identified. During drilling procedures, drill cuttings are produced and some are released to sea. The disposal of drill cuttings may cause environmental degradation to the marine environment. Increasing petroleum activities, therefore requires further knowledge of ocean current transportation of fine sediment particles ... -
Connection between chemical zonation and crystallographic preferred orientation as an indicator for the fabric development in eclogites. Example from the Saxothuringian eclogites, Bohemian massif, Czech Republic
(Master thesis; Mastergradsoppgave, 2017-05-15)The presence of eclogites is one of the strongest evidences for high pressure metamorphism, and for the presence of a paleo subduction zone. Deformation of eclogites can yield important information about the kinematics of subduction zones. The main mechanism for fabric development in eclogites is still a matter of debate among various research groups and has split the field in two. Most previous ... -
Shallow gas accumulations and fluid flow in the vicinity of the Goliat field, SW Barents Sea
(Master thesis; Mastergradsoppgave, 2017-05-15)This thesis focuses on the Goliat area located in the Hammerfest Basin, SW Barents Sea. The overall aim of this study is to increase the understanding of fluid flow processes between deeper thermogenic sources, and shallow gas accumulations. Indications of an active fluid flow system has been observed throughout the southwestern Barents Sea. Much of the fluid flow from deep hydrocarbon reservoirs ... -
Shallow stratigraphic cores NW of Bjørnøya, results and implications
(Master thesis; Mastergradsoppgave, 2017-05-15)Two shallow boreholes, 7418/01-U-01 and 7517/12-U-01, were in 1994 drilled by IKU / SINTEF on behalf of the Norwegian Petroleum Directorate (NPD) northwest of Bjørnøya in the western Barents Sea. These were part of a program totalling nine boreholes at six different locations between Bjørnøya and Svalbard. This area is not opened for petroleum activity, and the shallow boreholes were aimed at ... -
Carbonate concretions in an ice-contact delta, Skarmunken, Ullsfjord, northern Norway
(Master thesis; Mastergradsoppgave, 2017-03-10)At Skarmunken, a small village south of Ullsfjord, northern Troms, Norway, an outcrop containing carbonate concretions have been investigated. From sedimentary logging, five facies (facies A-E) have been classified by their grading and composition. Depositional data from logs, maximum pebble size (MPS) and earlier investigations suggests an ice-contact delta. TOC/TS data have revealed a dominantly ... -
Paleoceanographic development during the last deglaciation and Holocene, over the Bear Island slide scar, SW Barents Sea
(Master thesis; Mastergradsoppgave, 2017-02-02)The investigated sediment core HH13-243 GC is located under the present flow of the warm and saline Atlantic Water (AW), but close to, glaciated continental margins. The core site is situated in an area that is sensitive to changes and reflects the paleoceanography of the northernmost Norwegian Sea and the Western Barents Sea. We investigated the changes in inflow of Atlantic water and the ... -
Past methane emissions in the earliest Pleistocene on Yermak Plateau, NW Svalbard.
(Master thesis; Mastergradsoppgave, 2016-05-15)Hole 912A (Ocean Drilling Program (ODP) Leg 151) drilled on the Yermak Plateau (eastern Arctic Ocean) is used to investigate past methane emissions in the earliest Pleistocene. Preliminary work showed depleted δ¹³C values at 93-96 meters below sea floor (mbsf), and an increase in methane concentration between 11, 5 and 23 mbsf. A secondary sampling focused on intervals between 10 and 23 mbsf (core ...
