Blar i NTNU Open på forfatter "Sørensen, Bjørn Eske"
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A neural network approach for spatial variation assessment – A nepheline syenite case study
Mena Silva, Camilo Andres; Ellefmo, Steinar Løve; Sandøy, Roar; Sørensen, Bjørn Eske; Aasly, Kurt (Journal article; Peer reviewed, 2020)The present geometallurgical study shows the application of a machine-learning methodology to the prediction of material properties from the Nabbaren nepheline syenite deposit in Norway. The approach used in this study ... -
Analyse av den massive kvarts-turmalin-bergarten ved Nanjizal Bay, Cornwall - En geokjemisk og mikrotermometrisk studie
Svergja, Elise (Master thesis, 2015)Hensikten med denne masteroppgaven har vært å få en bedre forståelse av hvordan den massive kvarts-turmalin (MQT)-bergarten ved Land s End i Cornwall har blitt dannet. Bergarten observeres som melanokratisk, finkornet og ... -
Brittle-viscous deformation of vein quartz under fluid-rich lower greenschist facies conditions
Kjøll, Hans Jørgen; Viola, Giulio; Menegon, Luca; Sørensen, Bjørn Eske (Journal article; Peer reviewed, 2015)We studied by Electron BackScatter Diffraction (EBSD) and optical microscopy a coarse-grained (ca. 0.5–6 mm) quartz vein embedded in a phyllonitic matrix to gain insights into the recrystallization mechanisms and the ... -
Compositional Features and Swelling Potential of Two Weak Rock Types Affecting Their Slake Durability
Selen, Lena; Panthi, Krishna Kanta; Mørk, Mai Britt Engeness; Sørensen, Bjørn Eske (Journal article, 2021)Weak and weathered rocks are well known for their sensitivity to changes in moisture content. Degrading behavior is common in weak rocks with moisture-sensitive mineral components and present numerous stability problems. ... -
Cryptic Variations of Olivene and Clinopyroxene in the RF-4 Drill-Core: - A geochemical study of the Reinfjord Ultramafic Complex, Norway.
Grannes, Kim Rune Bragstad (Master thesis, 2016)The aim of the study is to estimate the cryptic variations of whole-rock samples as well as in olivine and clinopyroxene below and throughout the Ni-Cu reefs in the RF-4 drill-core and to study the relationship between the ... -
Crystallization and uplift path of late Variscan granites evidenced by quartz chemistry and fluid inclusions: Example from the Land's End granite, SW England
Drivenes, Kristian; B. Larsen, Rune; Müller, Axel Bernd; Sørensen, Bjørn Eske (Peer reviewed; Journal article, 2016)The megacrystic, coarse-grained granite of the Land’s End granitic complex, SW England, has been investigated by analyzing fluid inclusions, trace elements, and cathodoluminescence textures of quartz. By applying the TitaniQ ... -
Deep processes in the Reinfjord Ultramafic Complex, Nord-Troms A study of chromian Spinels and fractionation idicators in a layered ultramafic intrusion
Voll, Monika Oftedal (Master thesis, 2019)Reinfjord Ultramafiske Kompleks er et av flere magmatiske rot-systemer i Seiland Magmatiske Provins i Nord Norge. Ved 25-45 km dybde passerte flere tusen km3 med ultramafisk astenosfærisk magma gjennom rot-systemet på vei ... -
Deformation, Phyllonitization and Associated Element Mobilization of Granitoid Rocks: - A geochemical study of the Fagervika granitoid, Norway.
Granseth, Anette Utgården (Master thesis, 2015)The Fagervika granitoid is a felsic, peraluminous intrusion that was emplaced in oceanic crust at 481 Ma, now represented as the Bymarka ophiolite in Trondheim, Norway. It belongs to the Støren Group in the Upper Allochthon ... -
Fluid Inclusions in Quartz and their potential for forming a Porphyry-Cu-Mo-Deposit in the Kleivan Granite, South Norway
Hagen, Silje Hatlø (Master thesis, 2012)AbstractThe Kleivan granite is an oval granite of about 20 km2 situated near Lyngdal, south Norway. Samples from the quartz veins in the top of the magma chamber have been collected to investigate whether Mo might have ... -
Gangsvermen i det Reinfjord Ultramafiske Kompleks: Et vindu inn til de terminale stadiene som formet den Magmatiske Provinsen i Seiland
Orvik, Alf Andre (Master thesis, 2019)Intrusive ganger fungerer som en rask måte for overføring av magma. Dette ved generasjon av selvorganiserte nettverk gjennom brudd og permeable veier. Denne studien ser på den petrogentetiske og geokjemiske evolusjonen av ... -
Geometallurgical Approach to the Element-to-Mineral Conversion for the Nabbaren Nepheline Syenite Deposit
Mena Silva, Camilo Andrés; Sørensen, Bjørn Eske; Aasly, Kurt; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2018)Nabbaren nepheline syenite, a silica-deficient intrusive rock with low Fe content, was the industrial mineral deposit study case in this study. The quality of industrial mineral products are generally based on their bulk ... -
Geometallurgical Modelling of the Stjernøya Nepheline Syenite Mine
Silva, Camilo Andrés Mena (Doctoral theses at NTNU;2019:385, Doctoral thesis, 2019)The present study applies the concept of geometallurgy to an industrial mineral case study. Geometallurgy is a holistic discipline conveying different aspects of geology, mineral processing and mining together to improve ... -
Igneous Hydrothermal Alteration and Ore-Forming Processes in the Land's End Granite, Nanjizal
Eik, Marte (Master thesis, 2015)This study addresses the hydrothermal alteration and mineralization related to a system of tourmaline-quartz veins intersecting biotite-granite in Nanjizal, in the Land s End granites of the cornubian batholith. Nanjizal ... -
In situ evidence of earthquakes near the crust mantle boundary initiated by mantle co2 fluxing and reaction-driven strain softening
Sørensen, Bjørn Eske; Grant, Thomas; Ryan, Eric James; B. Larsen, Rune (Journal article; Peer reviewed, 2019)This study aims to understand the process behind the worldwide connection between deep crustal/upper mantle earthquakes and CO2 emissions along faults in rift zones. We do this by studying CO2-induced mineral reactions ... -
Late-magmatic immiscibility during batholith formation: assessment of B isotopes and trace elements in tourmaline from the Land’s End granite, SW England
Drivenes, Kristian; B. Larsen, Rune; Müller, Axel; Sørensen, Bjørn Eske; Wiedenbeck, Michael; Raanes, Morten Peder (Peer reviewed; Journal article, 2015)Quartz–tourmaline orbicules are unevenly distributed in the roof segment of the Land's End granite, SW England. This study shows that the orbicules formed from an immiscible hydrous borosilicate melt produced during the ... -
Magma-driven, high-grade metamorphism in the Sveconorwegian Province, southwest Norway, during the terminal stages of Fennoscandian Shield evolution
Slagstad, Trond; Roberts, Nick M.W.; Coint, Nolwenn.; Høy, Ingjerd Ulsaker; Sauer, Simone; Kirkland, CL; Marker, Mogens; Røhr, Torkil Sørlie; Henderson, Iain; Stormoen, Martin Austin; Skår, Øyvind; Sørensen, Bjørn Eske; Bybee, Grant M. (Journal article; Peer reviewed, 2018)Recently it has been argued that the Sveconorwegian orogeny in southwest Fennoscandia comprised a series of accretionary events between 1140 and 920 Ma, behind a long-lived, active continental margin characterized by ... -
Measurement of particle size distribution and specific surface area for crushed concrete aggregate fines
Cepuritis, Rolands; Garboczi, Edward J.; Ferraris, Chiara F.; Jacobsen, Stefan; Sørensen, Bjørn Eske (Journal article; Peer reviewed, 2017)Different methods for measuring particle size distribution (PSD) and specific surface area of crushed aggregate fines (⩽250 μm), produced by high-speed vertical shaft impact (VSI) crushing of rock types from different ... -
Metamorfose og metasomatiske prosesser i tonalittiske og mafiske gangbergarter på Klemetsaunet, Trondheim
Slenes, Tonje Moen (Master thesis, 2016)Klemetsaunet er et område nord i Bymarka ofiolitten, Trondheim, som ligger plassert i den øvre dekkeserien i de skandinaviske kaledonidene. Bymarka ofiolitten kan dateres tilbake til tidlig Ordivicium og består av en ... -
Metamorphic refinement of quartz under influence of fluids during exhumation with reference to the metamorphic/metasomatic evolution observed in amphibolites: a detailed field, microtectonic and geochemical study from the Bamble sector, South Norway
Sørensen, Bjørn Eske (Doktoravhandlinger ved NTNU, 1503-8181; 2007:146, Doctoral thesis, 2007)Outline of the thesis This thesis is comprises three papers that are intended for journal publication. The version provided in the thesis is a bit longer than they will be at final publication. However it was the desire ... -
Ore-forming processes in volcano-sedimentary hosted massive sulphide deposits in the Mofjell group, Nordland, Norway
Berbusmel, Berit (Master thesis, 2020)Mofjellgruppen i Rödningsfjäll skyvedekkekompleks er vert for flere malmforekomster, hvor noen av dem har vært utvunnet. I denne avhandlingen skal to av forekomstene som ikke har vært utvunnet før, Hesjelia sonen og ...