Bjørn Eske Sørensen

About

Research interests synopsis

Involved in research within petrology, structural geology, ore deposits and applied mineralogy. I am currently working on the relation between magmas, volatiles and shearzones in ancient continental rift zones. This involves field work, thermodynamic modelling, microstructure evolution using optical microscopy, EBSD and EPMA. Our recent findings documents the processes behind strain localisation and hence earthquake forming mechanisms below continental rift-zones and their relation to CO₂ emission (Sørensen et al., 2019; Ryan et al., 2022). I am also intrested in improved quality annd use of EBSD data and work on both aquisition in our in-house SEM equiped with NORDIF EBSD detector and software and data interpretation and represenstation using MTEX. As a teacher in optical mineralogy I devoloped an improved Michel Levy chart for determination of interference colour and hence birefringence (Sørensen, 2013). This methodology was expaned to work in 3D crystal space to visualize and quantify the relation between orientation, interference color and extinction in minerals in generalized fashion available in the MTEX toolbox together with Ralf Hielscher and David Mainprice and I am quite proud to part of the MTEX contributors . As an example this can be used to show the realtion between optical properties of olivine and the Fayalite-Forsterite amount and simulate optical images from EBSD data.

Simulated (left) and observed (right) cross-polarized transmitted optical image of olivine

3D simulation of optical properties of Olivine (Mg,Fe)2SiO4 as function of XFo=Mg/(Mg+Fe)

EBSD

Involved in the development of the SEM-lab, including our state of the art EBSD equipment. My special focus here is the improovement of indexing and phase discrimination between complicated low symmetry geological materials. We now have an impressive indexing percenttage of quartz abowe 98%. We currently ressearch on crystallographic fabric development in quartz, including the influence of twinning. Because we do offline data interpretation we can return to the original data and check indexing against EBSPs of the indexed points, making sure that we do not filter away correct data during cleanup proceedures (Sørensen et al., 2020). In addition we also developed new trapezoidal correction for multi-mapping, which takes care of the distortion in the EBSD scan by controlling scan voltages such that steps in X and Y are on a square grid. This insures that geometrical features such as grain boundaries are correctly represented in the maps and that stich of coarse grained ebsd datasets works seamlessly (Sørensen et al., 2020).

EBSD patterns dyed green, showing the change in pattern when crossing a Dauphiné twin boundary. Original by Bjørn Eske Sørensen (2001)

Data are collected using TSL-OIM sofware and then transferred into MTEX for more advanced analysis. We have exellent analysis facilities and encourage scientiffic colaboration, so feel free to take contact with Bjørn Eske Sørensen (bjorn.sorensen@ntnu.no) on EBSD. MTEX is used for improved interpretation of EBSD data, which contains spatially distributed crystallographic data which contains much more information than can be accessed by convetional commercial software. As an example we used combination of microstrucral information (grain shape) to automatically determine twin/host relationships in calcite and hence separate effects of dislocation creep and eTwin slip on the crystallographic fabric and hence infer important inforamtion about chenges in stress system and deformation mechanisms (Ryan et al., 2021). Another important apllication of the methodology developed is used on quartz where Dauphiné twins creates a mess in the statistics of grain-based pole figure plots, where each twin traditionally is treated as separate grains. Because each grain fo quartz contains numerous twins the twin grains craets a mess in the pole figures which is difficult to interpret. Instead by analysing each twinned grain and assembling automatically into groups of twins and hosts we can plot the average orientaiton of each group and get a much more rigurous interpretation of the data and futhermore a much more statiscally sound grain number i.e. one grain for each twin member and host, see Giuntoli et al., (2022).

Deformation processes and volatile-rock- melt interaction in upper-mid and lower crust

One of my recently most active projects is on the interaction between melt-volatiles and solid rock in the deformation of earth and genration of earthquakes. The Reinfjord intrusion in North Norway provides a unique field laboratory giving us a window into the lower crust (25-40 km depth) of the ultramafic parts of continental extsion zone, an ancient refelction of modern day riftzones like the east african rift. We have already been able to show:

1: That CO₂ induces localized grain size reduction in peridotitte from cm's down to 5 micrometers due volume expanding mineral reactions, causing increase in strain rate by more than two orders of magnitude, finally leading to eartquakes, revealed by fossilized frictional melts (pseudotachylites). (Sørensen et al., 2019; Ryan et al., 2022)

2: CO₂ originates from volatile rich mafic melts dyking the peridotite and the fractional heating caused by the strain localisation remelts the mafic dykes with the melt film causing large stress release due to weakening (Ryan et al., 2022).

3: This process also relates mafic dykes to strain localization along a >2km long extensional shearzone (Ryan et al., 2022).

4: This relation between CO₂ emission, seismicity and mafic volatile rich magma explains the observation of links between earthquakes and large scale CO₂ emissions in present day continental riftzones

Links

http://folk.ntnu.no/eskesore/Leka_website/

Publications

2025

Terron-Almenara, Jorge; Sørensen, Bjørn Eske; Røvde, Vebjørn; Holter, Karl Gunnar; Olsson, Ulf Peter Roger. (2025) The Significance of the Geological Properties of Volcanic Rock Masses on Tunnel Stability and Rock Support Design: A Case Study Based on the Construction of the Fámjin Road Tunnel in the Faroe Islands. Rock Mechanics and Rock Engineering
Academic article
Fichler, Christine Susanne Carola; Larsen, Rune B.; Sørensen, Bjørn Eske; Ellefmo, Steinar Løve. (2025) Initial search for lithium-rich brines in sedimentary basins of the Norwegian Barents Sea shelf integrating geology, geophysics and seabed geochemistry. Norwegian Journal of Geology
Academic article
Soylu, Edzhe; Lode, Stefanie; Mena Silva, Camilo Andres; Simavik, Kristina Ryeng; Ekstrøm, Kai Erik; Johansson, Inger Signe; Sørensen, Bjørn Eske; Kowalczuk, Pshem; Tranell, Maria Gabriella. (2025) Comprehensive characterization of solid waste incineration fly ash before and after salt washing: evaluating analytical methods for sustainable waste management. Resources, Conservation & Recycling Advances (RCR Advances)
Academic article
Størdal, Kine Tangvik; Slagstad, Trond; Felix, Maarten; Funderud, Silje; Kulakov, Evgeniy; Sørensen, Bjørn Eske; Saalmann, Kerstin; Huyskens, Magdalena H.; Lode, Stefanie. (2025) Detrital zircon data suggest multiple Cryogenian–Cambrian active margins along northern and western Baltica and close ties with Siberia. Precambrian Research
Academic article

2024

Manataki, Andriani; Hmadeh, Lewaa; Sørensen, Bjørn Eske; Kontis, Paraskevas; Sangesland, Sigbjørn. (2024) The effect of well temperature on the microstructure and the mechanical performance of bismuth-based plugs in well plugging and abandonment operations. Geoenergy Science and Engineering
Academic article

2023

Ryan, Eric James; Sørensen, Bjørn Eske; Fichler, Christine Susanne Carola; Larsen, Rune B.; Gresseth, Julie Linnea Sehested; Bjørlykke, Arne. (2023) Fault linkage on southeastern Bjørnøya: Implications for structural interpretations surrounding fertile ore-forming fault systems offshore. Norwegian Journal of Geology
Academic article

2022

Ryan, Eric James; Sørensen, Bjørn Eske; Drivenes, Kristian; Larsen, Rune B.. (2022) Infiltration of volatile-rich mafic melt in lower crustal peridotites provokes lower crustal earthquakes. Journal of Structural Geology
Academic article
Orvik, Alf Andre; Slagstad, Trond; Hansen, Harald; Nilsson, Lars Petter; Sørensen, Bjørn Eske. (2022) The Palaeoproterozoic Gallujavri Ultramafic Intrusion, Karasjok Greenstone Belt; Petrogenesis of a Trans-Crustal Magma System. Journal of Petrology
Academic article
Giuntoli, Francesco; Viola, Giulio; Sørensen, Bjørn Eske. (2022) Deformation Mechanisms of Blueschist Facies Continental Metasediments May Offer Insights Into Deep Episodic Tremor and Slow Slip Events. Journal of Geophysical Research (JGR): Solid Earth
Academic article
Granseth, Anette; Sørensen, Bjørn Eske. (2022) Tectonomagmatic Evolution of the Sveconorwegian Orogen: Insights from Geochemical and Isotopic Data. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
manuel, curzi; Caracausi, Antonio; Rossetti, Federico; Rabiee, Ahmad; Billi, Andrea; Carminati, Eugenio; Aldega, Luca; Bernasconi, Stefano M.; Boschi, C.; Drivenes, Kristian. (2022) From Fossil to Active Hydrothermal Outflow in the Back-Arc of the Central Apennines (Zannone Island, Italy). Geochemistry Geophysics Geosystems
Academic article
Nikolaisen, Even; Harrison, Richard John; Fabian, Karl; Church, Nathan Stewart; Mcenroe, Suzanne; Sørensen, Bjørn Eske; Tegner, Christian. (2022) Hysteresis parameters and magnetic anisotropy of silicate-hosted magnetite exsolutions. Geophysical Journal International
Academic article
Orvik, Alf Andre; Slagstad, Trond; Sørensen, Bjørn Eske; Millar, Ian; Hansen, Harald. (2022) Evolution of the Gállojávri ultramafic intrusion from U-Pb zircon ages and Rb-Sr, Sm-Nd and Lu-Hf isotope systematics. Precambrian Research
Academic article

2021

Ryan, Eric James; Papeschi, S.; Viola, G.; Musumeci, Giovanni; Mazzarini, Francesco; Torgersen, E.; Sørensen, Bjørn Eske; Ganerød, M.. (2021) Syn-Orogenic Exhumation of High-P Units by Upward Extrusion in an Accretionary Wedge: Insights From the Eastern Elba Nappe Stack (Northern Apennines, Italy). Tectonics
Academic article
Granseth, Anette; Slagstad, Trond; Roberts, Nick M.W.; Hagen-Peter, Graham; Kirkland, Christopher L.; Møkkelgjerd, Steinar Halvdan Hansen; Røhr, Torkil Sørlie; Coint, Nolwenn; Sørensen, Bjørn Eske. (2021) Multi-isotope tracing of the 1.3–0.9 Ga evolution of Fennoscandia; crustal growth during the Sveconorwegian orogeny. Gondwana Research
Academic article
Selen, Lena; Panthi, Krishna Kanta; Mørk, Mai Britt Engeness; Sørensen, Bjørn Eske. (2021) Compositional Features and Swelling Potential of Two Weak Rock Types Affecting Their Slake Durability. Geotechnics
Academic article

2020

Sørensen, Bjørn Eske; Hjelen, Jarle; Ånes, Håkon Wiik; Breivik, Torkjell. (2020) Recent features in EBSD, including new trapezoidal correction for multi-mapping. IOP Conference Series: Materials Science and Engineering
Academic article
Slagstad, Trond; Marker, Mogens; Roberts, Nick M.W.; Saalmann, Kerstin; Kirkland, Christopher L.; Kulakov, Evgeniy; Ganerød, Morgan; Røhr, Torkil Sørlie; Møkkelgjerd, Steinar Halvdan Hansen; Granseth, Anette. (2020) The Sveconorwegian orogeny – reamalgamation of the fragmented southwestern margin of Fennoscandia. Precambrian Research
Academic article
Granseth, Anette; Slagstad, Trond; Coint, Nolwenn; Roberts, Nick MW; Røhr, Torkil Sørlie; Sørensen, Bjørn Eske. (2020) Tectonomagmatic evolution of the Sveconorwegian orogen recorded in the chemical and isotopic compositions of 1070?920?Ma granitoids. Precambrian Research
Academic article
Sørensen, Bjørn Eske; Dijkstra, Hans; Drivenes, Kristian; Matthews, Michael B.; Richter, Silvia. (2020) 16th European Workshop on Modern Developments and Applications in Microbeam Analysis (EMAS 2019) Trondheim, Norway, 19-23 May 2019. IOP Conference Series: Materials Science and Engineering
Editorial
Ånes, Håkon Wiik; Hjelen, Jarle; Sørensen, Bjørn Eske; Helvoort, Antonius Van; Marthinsen, Knut. (2020) Processing and indexing of electron backscatter patterns using open-source software. IOP Conference Series: Materials Science and Engineering
Academic article
Mena Silva, Camilo Andres; Ellefmo, Steinar Løve; Sandøy, Roar; Sørensen, Bjørn Eske; Aasly, Kurt. (2020) A neural network approach for spatial variation assessment – A nepheline syenite case study. Minerals Engineering
Academic article

2019

Sørensen, Bjørn Eske; Grant, Thomas; Ryan, Eric James; Larsen, Rune B.. (2019) in situ evidence of earthquakes near the crust mantle boundary initiated by mantle co2 fluxing and reaction-driven strain softening. Earth and Planetary Science Letters
Academic article

2018

Larsen, Rune B.; Grant, Thomas; Sørensen, Bjørn Eske; Tegner, Christian; Mcenroe, Suzanne; Pastore, Zeudia; Fichler, Christine; Nikolaisen, Even; Grannes, Kim Rune Bragstad; Church, Nathan Stewart. (2018) Portrait of a giant deep-seated magmatic conduit system: The Seiland Igneous Province. Lithos
Academic article
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. (2018) Magma-driven, high-grade metamorphism in the Sveconorwegian Province, southwest Norway, during the terminal stages of Fennoscandian Shield evolution. Geosphere
Academic article
Mena Silva, Camilo Andrés; Sørensen, Bjørn Eske; Aasly, Kurt; Ellefmo, Steinar Løve. (2018) Geometallurgical Approach to the Element-to-Mineral Conversion for the Nabbaren Nepheline Syenite Deposit. Minerals
Academic article

2017

Cepuritis, Rolands; Garboczi, Edward J.; Ferraris, Chiara F.; Jacobsen, Stefan; Sørensen, Bjørn Eske. (2017) Measurement of particle size distribution and specific surface area for crushed concrete aggregate fines. Advanced Powder Technology
Academic article

2016

Drivenes, Kristian; Larsen, Rune B.; Müller, Axel Bernd; Sørensen, Bjørn Eske. (2016) Crystallization and uplift path of late Variscan granites evidenced by quartz chemistry and fluid inclusions: Example from the Land's End granite, SW England. Lithos
Academic article
Drivenes, Kristian; Sørensen, Bjørn Eske; Larsen, Rune B.. (2016) Orogenic degassing, scapolitization and K-metasomatism during Caledonian exhumation, Helgeland, Norway. Norsk Geologisk Tidsskrift
Academic article

2015

Kjøll, Hans Jørgen; Viola, Giulio; Menegon, Luca; Sørensen, Bjørn Eske. (2015) Brittle-viscous deformation of vein quartz under fluid-rich lower greenschist facies conditions. Solid Earth (SE)
Academic article
Coint, N; Slagstad, Trond; Roberts, Nick M.W.; Marker, M.; Røhr, Torkil Sørlie; Sørensen, Bjørn Eske. (2015) The Late Mesoproterozoic Sirdal Magmatic Belt, SW Norway: Relationships between magmatism and metamorphism and implications for Sveconorwegian orogenesis. Precambrian Research
Academic article
Drivenes, Kristian; Larsen, Rune B.; Müller, Axel; Sørensen, Bjørn Eske; Wiedenbeck, Michael; Raanes, Morten Peder. (2015) Late-magmatic immiscibility during batholith formation: assessment of B isotopes and trace elements in tourmaline from the Land’s End granite, SW England. Contributions to Mineralogy and Petrology
Academic article

2013

Sørensen, Bjørn Eske. (2013) A revised Michel Lévy interference colour chart based on first-principles calculations. European journal of mineralogy
Academic article
Hestnes, Kristin Husebø; Aasly, Kurt; Sandøy, Roar; Sørensen, Bjørn Eske. (2013) Occurrence of iron in industrial granitic pegmatite. Minerals Engineering
Academic article

2012

Castro, Nélia Sofia Cardoso; Sørensen, Bjørn Eske; Broekmans, Maarten A.T.M. (2012) Quantitative assessment of alkali-reactive aggregate mineral content through XRD using polished sections as a supplementary tool to RILEM AAR-1 (petrographic method). Cement and Concrete Research
Academic article
Hestnes, Kristin Husebø; Sørensen, Bjørn Eske. (2012) Quantitative mineral characterization of granite pegmatite using Topas Rietveld XRD refinement.
Academic chapter
Castro, Nélia Sofia Cardoso; Sørensen, Bjørn Eske; Broekmans, Maarten A.T.M. (2012) Assessment of Individual ASR-Aggregate Particles by XRD.
Academic chapter
Hestnes, Kristin Husebø; Sørensen, Bjørn Eske. (2012) Evaluation of quantitative X-ray diffraction for possible use in the quality control of granitic pegmatite in mineral production. Minerals Engineering
Academic article

2011

Castro, Nélia Sofia Cardoso; Sørensen, Bjørn Eske; Broekmans, Maarten A.T.M. (2011) Assessment of individual ASR-aggregate particles by XRD.
Academic chapter

2010

Sørensen, Bjørn Eske; Gaal, Sean; Ringdalen, Eli; Tangstad, Merete; Kononov, Ring; Ostrovski, Oleg. (2010) Phase compositions of manganese ores and their change in the process of calcination. International Journal of Mineral Processing
Academic article
Sørensen, Bjørn Eske; Gaal, S.; Tangstad, Merete; Ringdalen, Eli; Kononov, Ring; Ostrovski, Oleg. (2010) Properties of manganese ores and their change in the process of calcination.
Academic chapter

2005

Sørensen, Bjørn Eske; Austrheim, Håkon; Larsen, Rune Berg. (2005) Fluid-related recovery and deformation textures in quartz in partly retrogressed high-grade quartzites from the Bamble sector. EOS
Academic article
Larsen, Rune Berg; Ihlen, Peter; Jacamon, Francois Pierre; Müller, Axel; Sørensen, Bjørn Eske. (2005) IGNEOUS REFINEMENT OF QUARTZ RAW-MATERIALS. Abstracts with programs (Geological Society of America)
Conference abstract
Sørensen, Bjørn Eske. (2005) Fluid-related recovry and deformation textures in partly retrogressed high-grade quartzites from the Bamble sector.
Academic chapter

Journal publications

Terron-Almenara, Jorge; Sørensen, Bjørn Eske; Røvde, Vebjørn; Holter, Karl Gunnar; Olsson, Ulf Peter Roger. (2025) The Significance of the Geological Properties of Volcanic Rock Masses on Tunnel Stability and Rock Support Design: A Case Study Based on the Construction of the Fámjin Road Tunnel in the Faroe Islands. Rock Mechanics and Rock Engineering
Academic article
Fichler, Christine Susanne Carola; Larsen, Rune B.; Sørensen, Bjørn Eske; Ellefmo, Steinar Løve. (2025) Initial search for lithium-rich brines in sedimentary basins of the Norwegian Barents Sea shelf integrating geology, geophysics and seabed geochemistry. Norwegian Journal of Geology
Academic article
Soylu, Edzhe; Lode, Stefanie; Mena Silva, Camilo Andres; Simavik, Kristina Ryeng; Ekstrøm, Kai Erik; Johansson, Inger Signe; Sørensen, Bjørn Eske; Kowalczuk, Pshem; Tranell, Maria Gabriella. (2025) Comprehensive characterization of solid waste incineration fly ash before and after salt washing: evaluating analytical methods for sustainable waste management. Resources, Conservation & Recycling Advances (RCR Advances)
Academic article
Manataki, Andriani; Hmadeh, Lewaa; Sørensen, Bjørn Eske; Kontis, Paraskevas; Sangesland, Sigbjørn. (2024) The effect of well temperature on the microstructure and the mechanical performance of bismuth-based plugs in well plugging and abandonment operations. Geoenergy Science and Engineering
Academic article
Sørensen, Bjørn Eske; Austrheim, Håkon; Larsen, Rune Berg. (2005) Fluid-related recovery and deformation textures in quartz in partly retrogressed high-grade quartzites from the Bamble sector. EOS
Academic article
Ryan, Eric James; Sørensen, Bjørn Eske; Drivenes, Kristian; Larsen, Rune B.. (2022) Infiltration of volatile-rich mafic melt in lower crustal peridotites provokes lower crustal earthquakes. Journal of Structural Geology
Academic article
Orvik, Alf Andre; Slagstad, Trond; Hansen, Harald; Nilsson, Lars Petter; Sørensen, Bjørn Eske. (2022) The Palaeoproterozoic Gallujavri Ultramafic Intrusion, Karasjok Greenstone Belt; Petrogenesis of a Trans-Crustal Magma System. Journal of Petrology
Academic article
Ryan, Eric James; Sørensen, Bjørn Eske; Fichler, Christine Susanne Carola; Larsen, Rune B.; Gresseth, Julie Linnea Sehested; Bjørlykke, Arne. (2023) Fault linkage on southeastern Bjørnøya: Implications for structural interpretations surrounding fertile ore-forming fault systems offshore. Norwegian Journal of Geology
Academic article
Sørensen, Bjørn Eske; Gaal, Sean; Ringdalen, Eli; Tangstad, Merete; Kononov, Ring; Ostrovski, Oleg. (2010) Phase compositions of manganese ores and their change in the process of calcination. International Journal of Mineral Processing
Academic article
Giuntoli, Francesco; Viola, Giulio; Sørensen, Bjørn Eske. (2022) Deformation Mechanisms of Blueschist Facies Continental Metasediments May Offer Insights Into Deep Episodic Tremor and Slow Slip Events. Journal of Geophysical Research (JGR): Solid Earth
Academic article
Sørensen, Bjørn Eske. (2013) A revised Michel Lévy interference colour chart based on first-principles calculations. European journal of mineralogy
Academic article
manuel, curzi; Caracausi, Antonio; Rossetti, Federico; Rabiee, Ahmad; Billi, Andrea; Carminati, Eugenio; Aldega, Luca; Bernasconi, Stefano M.; Boschi, C.; Drivenes, Kristian. (2022) From Fossil to Active Hydrothermal Outflow in the Back-Arc of the Central Apennines (Zannone Island, Italy). Geochemistry Geophysics Geosystems
Academic article
Larsen, Rune B.; Sørensen, Bjørn Eske; Müller, Axel. (2008) Formation and cross cumulus migration of residual melts in the Skaergagaard Intrusion, East Greenland. EOS
Academic article
Størdal, Kine Tangvik; Slagstad, Trond; Felix, Maarten; Funderud, Silje; Kulakov, Evgeniy; Sørensen, Bjørn Eske; Saalmann, Kerstin; Huyskens, Magdalena H.; Lode, Stefanie. (2025) Detrital zircon data suggest multiple Cryogenian–Cambrian active margins along northern and western Baltica and close ties with Siberia. Precambrian Research
Academic article
Larsen, Rune B.; Grant, Thomas; Sørensen, Bjørn Eske; Tegner, Christian; Mcenroe, Suzanne; Pastore, Zeudia; Fichler, Christine; Nikolaisen, Even; Grannes, Kim Rune Bragstad; Church, Nathan Stewart. (2018) Portrait of a giant deep-seated magmatic conduit system: The Seiland Igneous Province. Lithos
Academic article
Drivenes, Kristian; Larsen, Rune B.; Müller, Axel Bernd; Sørensen, Bjørn Eske. (2016) Crystallization and uplift path of late Variscan granites evidenced by quartz chemistry and fluid inclusions: Example from the Land's End granite, SW England. Lithos
Academic article
Kjøll, Hans Jørgen; Viola, Giulio; Menegon, Luca; Sørensen, Bjørn Eske. (2015) Brittle-viscous deformation of vein quartz under fluid-rich lower greenschist facies conditions. Solid Earth (SE)
Academic article
Ryan, Eric James; Papeschi, S.; Viola, G.; Musumeci, Giovanni; Mazzarini, Francesco; Torgersen, E.; Sørensen, Bjørn Eske; Ganerød, M.. (2021) Syn-Orogenic Exhumation of High-P Units by Upward Extrusion in an Accretionary Wedge: Insights From the Eastern Elba Nappe Stack (Northern Apennines, Italy). Tectonics
Academic article
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. (2018) Magma-driven, high-grade metamorphism in the Sveconorwegian Province, southwest Norway, during the terminal stages of Fennoscandian Shield evolution. Geosphere
Academic article
Nikolaisen, Even; Harrison, Richard John; Fabian, Karl; Church, Nathan Stewart; Mcenroe, Suzanne; Sørensen, Bjørn Eske; Tegner, Christian. (2022) Hysteresis parameters and magnetic anisotropy of silicate-hosted magnetite exsolutions. Geophysical Journal International
Academic article
Cepuritis, Rolands; Garboczi, Edward J.; Ferraris, Chiara F.; Jacobsen, Stefan; Sørensen, Bjørn Eske. (2017) Measurement of particle size distribution and specific surface area for crushed concrete aggregate fines. Advanced Powder Technology
Academic article
Castro, Nélia Sofia Cardoso; Sørensen, Bjørn Eske; Broekmans, Maarten A.T.M. (2012) Quantitative assessment of alkali-reactive aggregate mineral content through XRD using polished sections as a supplementary tool to RILEM AAR-1 (petrographic method). Cement and Concrete Research
Academic article
Sørensen, Bjørn Eske; Grant, Thomas; Ryan, Eric James; Larsen, Rune B.. (2019) in situ evidence of earthquakes near the crust mantle boundary initiated by mantle co2 fluxing and reaction-driven strain softening. Earth and Planetary Science Letters
Academic article
Sørensen, Bjørn Eske; Hjelen, Jarle; Ånes, Håkon Wiik; Breivik, Torkjell. (2020) Recent features in EBSD, including new trapezoidal correction for multi-mapping. IOP Conference Series: Materials Science and Engineering
Academic article
Slagstad, Trond; Marker, Mogens; Roberts, Nick M.W.; Saalmann, Kerstin; Kirkland, Christopher L.; Kulakov, Evgeniy; Ganerød, Morgan; Røhr, Torkil Sørlie; Møkkelgjerd, Steinar Halvdan Hansen; Granseth, Anette. (2020) The Sveconorwegian orogeny – reamalgamation of the fragmented southwestern margin of Fennoscandia. Precambrian Research
Academic article
Granseth, Anette; Slagstad, Trond; Coint, Nolwenn; Roberts, Nick MW; Røhr, Torkil Sørlie; Sørensen, Bjørn Eske. (2020) Tectonomagmatic evolution of the Sveconorwegian orogen recorded in the chemical and isotopic compositions of 1070?920?Ma granitoids. Precambrian Research
Academic article
Drivenes, Kristian; Sørensen, Bjørn Eske; Larsen, Rune B.. (2016) Orogenic degassing, scapolitization and K-metasomatism during Caledonian exhumation, Helgeland, Norway. Norsk Geologisk Tidsskrift
Academic article
Granseth, Anette; Slagstad, Trond; Roberts, Nick M.W.; Hagen-Peter, Graham; Kirkland, Christopher L.; Møkkelgjerd, Steinar Halvdan Hansen; Røhr, Torkil Sørlie; Coint, Nolwenn; Sørensen, Bjørn Eske. (2021) Multi-isotope tracing of the 1.3–0.9 Ga evolution of Fennoscandia; crustal growth during the Sveconorwegian orogeny. Gondwana Research
Academic article
Mena Silva, Camilo Andrés; Sørensen, Bjørn Eske; Aasly, Kurt; Ellefmo, Steinar Løve. (2018) Geometallurgical Approach to the Element-to-Mineral Conversion for the Nabbaren Nepheline Syenite Deposit. Minerals
Academic article
Sørensen, Bjørn Eske; Dijkstra, Hans; Drivenes, Kristian; Matthews, Michael B.; Richter, Silvia. (2020) 16th European Workshop on Modern Developments and Applications in Microbeam Analysis (EMAS 2019) Trondheim, Norway, 19-23 May 2019. IOP Conference Series: Materials Science and Engineering
Editorial
Sørensen, Bjørn Eske; Larsen, Rune B.. (2009) Origin and implications of zoned amphiboles and other hydrous silicates during aqueous brine infiltration in the Bamble mega shearzone, S-Norway. EOS
Academic article
Ånes, Håkon Wiik; Hjelen, Jarle; Sørensen, Bjørn Eske; Helvoort, Antonius Van; Marthinsen, Knut. (2020) Processing and indexing of electron backscatter patterns using open-source software. IOP Conference Series: Materials Science and Engineering
Academic article
Larsen, Rune Berg; Ihlen, Peter; Jacamon, Francois Pierre; Müller, Axel; Sørensen, Bjørn Eske. (2005) IGNEOUS REFINEMENT OF QUARTZ RAW-MATERIALS. Abstracts with programs (Geological Society of America)
Conference abstract
Orvik, Alf Andre; Slagstad, Trond; Sørensen, Bjørn Eske; Millar, Ian; Hansen, Harald. (2022) Evolution of the Gállojávri ultramafic intrusion from U-Pb zircon ages and Rb-Sr, Sm-Nd and Lu-Hf isotope systematics. Precambrian Research
Academic article
Coint, N; Slagstad, Trond; Roberts, Nick M.W.; Marker, M.; Røhr, Torkil Sørlie; Sørensen, Bjørn Eske. (2015) The Late Mesoproterozoic Sirdal Magmatic Belt, SW Norway: Relationships between magmatism and metamorphism and implications for Sveconorwegian orogenesis. Precambrian Research
Academic article
Hestnes, Kristin Husebø; Aasly, Kurt; Sandøy, Roar; Sørensen, Bjørn Eske. (2013) Occurrence of iron in industrial granitic pegmatite. Minerals Engineering
Academic article
Mena Silva, Camilo Andres; Ellefmo, Steinar Løve; Sandøy, Roar; Sørensen, Bjørn Eske; Aasly, Kurt. (2020) A neural network approach for spatial variation assessment – A nepheline syenite case study. Minerals Engineering
Academic article
Selen, Lena; Panthi, Krishna Kanta; Mørk, Mai Britt Engeness; Sørensen, Bjørn Eske. (2021) Compositional Features and Swelling Potential of Two Weak Rock Types Affecting Their Slake Durability. Geotechnics
Academic article
Sørensen, Bjørn Eske; Larsen, Rune B.. (2009) Coupled trace element mobilisation and strain softening in quartz during retrograde fluid infiltration in dry granulite protoliths. Contributions to Mineralogy and Petrology
Academic article
Drivenes, Kristian; Larsen, Rune B.; Müller, Axel; Sørensen, Bjørn Eske; Wiedenbeck, Michael; Raanes, Morten Peder. (2015) Late-magmatic immiscibility during batholith formation: assessment of B isotopes and trace elements in tourmaline from the Land’s End granite, SW England. Contributions to Mineralogy and Petrology
Academic article
Hestnes, Kristin Husebø; Sørensen, Bjørn Eske. (2012) Evaluation of quantitative X-ray diffraction for possible use in the quality control of granitic pegmatite in mineral production. Minerals Engineering
Academic article

Part of book/report

Sørensen, Bjørn Eske. (2007) Coupled Trace Element Mobilisation and Strain Softening in Quartz during Retrograde Fluid Infiltration in Dry High-temperature Quartz-bearing Rocks.
Academic chapter
Sørensen, Bjørn Eske. (2006) Quantitative interpretation of fluid-dependant mineral equilibria in complex calcsilicate rocks.
Academic chapter
Castro, Nélia Sofia Cardoso; Sørensen, Bjørn Eske; Broekmans, Maarten A.T.M. (2011) Assessment of individual ASR-aggregate particles by XRD.
Academic chapter
Hestnes, Kristin Husebø; Sørensen, Bjørn Eske. (2012) Quantitative mineral characterization of granite pegmatite using Topas Rietveld XRD refinement.
Academic chapter
Sørensen, Bjørn Eske; Gaal, S.; Tangstad, Merete; Ringdalen, Eli; Kononov, Ring; Ostrovski, Oleg. (2010) Properties of manganese ores and their change in the process of calcination.
Academic chapter
Castro, Nélia Sofia Cardoso; Sørensen, Bjørn Eske; Broekmans, Maarten A.T.M. (2012) Assessment of Individual ASR-Aggregate Particles by XRD.
Academic chapter
Sørensen, Bjørn Eske. (2005) Fluid-related recovry and deformation textures in partly retrogressed high-grade quartzites from the Bamble sector.
Academic chapter

Student thesis or dissertation

Granseth, Anette; Sørensen, Bjørn Eske. (2022) Tectonomagmatic Evolution of the Sveconorwegian Orogen: Insights from Geochemical and Isotopic Data. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Sørensen, Bjørn Eske; Larsen, R.B.; Austrheim, Håkon. (2007) Metamorphic refinement of quartz under the influence of fluids during exhumation with reference to the metamorphic/metasomatic evolution observed in amphibolites. NTNU
Doctoral thesis

Teaching

Courses

Outreach