English
norskBlar i tittel Mastergradsoppgaver i geologi
Viser treff 256-271 av 271
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Tectonic environment, geochemistry and petrology of the Tromsøysound iron ore
(Master thesis; Mastergradsoppgave, 2013-11-15)The geochemistry, mineralogy and associated basic rocks of the Tromsøysound iron ore field was studied for this thesis. The iron ore field is located in the Tromsø Nappe an ultra-high-pressure terrain in Troms, Northern-Norway, and has undergone some partial melting and metasomatism. The ore mineral is magnetite. The tectonic environment is investigated but inconclusive. -
Tectono-metamorphic evolution of metasedimentary host rocks of ultramafic rocks in the Heidal/Sel Group, Trondheim Nappe Complex, Folldal: mineralogical and micro-textural changes during the Scandian thrusting
(Master thesis; Mastergradsoppgave, 2018-11-15)Abstract Several ultramafic outcrops are located along a specific tectono-stratigraphic unit in the Trondheim Nappe Complex, Central Scandinavian Caledonides. The relative timing and kinematics of these rocks are investigated by the use of structural, petrographical and mineralogical data from its host rocks. The metasedimentary host rocks are part of the Sel and Heidal Groups of the Røros and ... -
Terrenganalyse og 3D snøskredsimuleringer for plassering av radar for snøskredvarsling
(Master thesis; Mastergradsoppgave, 2018-10-09)Etter flere ulykker knyttet til snøskred på Europavei 8 i Lavangsdalen i Troms de siste årene, har Statens vegvesen gått inn for å bedre skredsikringen langs den 18 km lange dalen. Hovedformålet med denne masteroppgaven er å komme med innspill til hensiktsmessig plassering av automatiske overvåkningsanlegg for snøskred ved fire avgrensede strekninger langs vegen: Hestvollan, Sarasteinen, Stortinden ... -
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 ... -
Tinnvatnformasjonen i Vannas proterozoiske lagrekke : sedimentære facies og avsetningsmiljø
(Master thesis; Mastergradsoppgave, 2012-06-15)Vanna representerer den nordøstligste utstrekningen av Vest-Troms gneisregion, som består av neoarkeiske til paleoproterozoiske provinser intrudert av mafiske og felsiske intrusjoner, samt en rekke suprakrustalbelter hvor Vannagruppen utgjør ett av dem. Den sandige Tinnvatnformasjonen utgjør den nedre delen av Vannagruppen, hvor den er konformt overlagret av den mer finkornige Bukkheiaformasjonen. ... -
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 ... -
Triassic Channel Systems on the northern Loppa High, SW Barents Sea
(Master thesis; Mastergradsoppgave, 2018-06-07)During the Triassic, the Barents Sea Basin was filled with sediments from the Uralian and Caledonian mountain belts. High sediment yield and large river systems made progradation possible, resulting in an alluvial to deltaic plain stretching from the mountain belts in the south east to Spitsbergen in the north.This thesis focuses on the northwestern part of the Loppa High area, SW Barents Sea. The ... -
The Tromsø Nappe Contact with the Nakkedal Nappe Complex NE of Tromsdalstind : Shear kinematics and relationship with metamorphism.
(Master thesis; Mastergradsoppgave, 2011-05)The tectonic contact between the Nakkedal Nappe Complex and the Tromsø Nappe crops out NE of Tromsdalstind, 5 km E of Tromsø, Norway. Petrological- and structural analysis of the contact have been undertaken in order to contribute to a better understanding of the tectonometamorphic history of the Uppermost Allochton in the Scandianavian Caledonides. Methods such as P-T pseudosection analysis, ... -
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 ... -
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 ... -
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 ... -
Upper Triassic to lower Cretaceous tectonostratigraphic development of the Barents Sea South East
(Master thesis; Mastergradsoppgave, 2020-05-27)The aim of this study is to investigate the tectonic- and evolutionary differences between major structural elements of the Barents Sea South East (BSSE) during the uppermost Triassic to lower Cretaceous. The study area comprises the following structural elements: the Bjarmeland- and Finnmark platforms, the Nordkapp- and Tiddlybanken basins, the Signalhorn-, Haapet- and Veslekari domes and the ... -
Use of 2D-seismic data and available wells to investigate the source potential of the Palaeozoic interval in the Loppa High area, SW Barents Sea
(Master thesis; Mastergradsoppgave, 2018-05-15)While most established plays in the Barents Sea have occurred in the Mesozoic, the Alta and Gohta discoveries prove a new carbonate play concept, with a source rock that does not stem from the Jurassic. Based on depositional environment and TOC values from the Palaeozoic interval a source rock with Top Ørn as its bottom and Top Røye as its top was interpreted. Basin modelling carried out on this ... -
The Use of Foraminiferal Geochemistry to Investigate Methane Seepage at the Svyatogor Ridge, Arctic Ocean
(Master thesis; Mastergradsoppgave, 2022-05-12)Methane is a greenhouse gas contributing to contemporaneous global warming, and seepage is one of the ways through which it migrates from the deep sedimentary basins, all the way up to the hydro- and atmosphere. The study of methane seepage is still young as scientists are yet to discover most seep sites as well as seep associated biological species. A record of past methane seepage can be derived ... -
Veikimorener i Norrbotten, Nord-Sverige – dødislandskap og morenebelter fra siste istid. Geomorfologisk tilnærming og GPR-profilanalyse av veikimorener innen den nordligste buen av veikimorenebeltet – Lainiobuen
(Master thesis; Mastergradsoppgave, 2020-12-30)Skandinavias glasiasjonshistorie er enda ikke kontinuerlig sammensatt for weichselistiden. I forhold til det fennoskandiske isskjoldet har nye studier avdekket alternative geokronologiske tolkninger for tidlig og midt weichsel i Nord-Sverige. Veikimorenelandskapet ble dannet over en stadial-interstadial syklus korrelert til tidlig weichsel av Lagerbäck (1988). Dette motstrides av moderne vitenskapelige ... -
Volume measurements and change of Longyearbreen and Tellbreen, Svalbard
(Master thesis; Mastergradsoppgave, 2017-08-12)Climate change is a comprehensive field of research. The cryosphere is only a small portion of the entire spectrum but is still a very important constituent to try and understand. Thermal expansion of the oceans is the second largest cause for sea level rise around the world after the global melting of glaciers and ice sheets combined. Even the smallest valley glaciers, with small individual volumes, ...
