Espen Torgersen
About
My main research interest is structural geology. I am particularly focused on the integration of structural, geochronological and geochemical analyses to decipher the spatial and temporal evolution of exhumed deformation zones. Field work, using digital mapping techniques, is an important component of all my projects.
Publications
2025
-
Dichiarante, Anna Maria;
Torgersen, Espen;
Redfield, Tim F.;
Köhler, Andreas;
Torabi, Anita;
Svendby, Anne Kathrine.
(2025)
Spectral Analysis of Topography as Proxy for Lineament Analysis.
Journal of Geophysical Research (JGR): Solid Earth
Academic article
2022
-
Torgersen, Espen;
Gabrielsen, Roy Helge;
Ganerød, Morgan;
Lelij, Roelant van der;
Schönenberger, Jasmin;
Nystuen, Johan Petter.
(2022)
Repeated brittle reactivations of a pre-existing plastic shear zone: combined K-Ar and <sup>40</sup>Ar-<sup>39</sup>Ar geochronology of the long-lived (>700 Ma) Himdalen-Orje Deformation Zone, SE Norway.
Geological Magazine
Academic article
-
Viola, Giulio;
Musumeci, Giovanni;
Mazzarini, Francesco;
Tavazzani, Lorenzo;
Curzi, Manuel;
Torgersen, Espen.
(2022)
Structural characterization and K-Ar illite dating of reactivated, complex and heterogeneous fault zones: lessons from the Zuccale Fault, Northern Apennines.
Solid Earth (SE)
Academic article
2021
-
Ryan, Eric James;
Papeschi, S.;
Viola, G.;
Musumeci, Giovanni;
Mazzarini, Francesco;
Torgersen, E..
(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
2018
-
Flem, Belinda;
Torgersen, Espen;
Englmaier, Peter;
Andersson, Malin;
Finne, Tor Erik;
Eggen, Ola Anfin.
(2018)
Response of soil C-and O-horizon and terrestrial moss samples to various lithological units and mineralization in southern Norway.
Geochemistry: Exploration, Environment, Analysis
Academic article
-
Viola, Giulio;
Torgersen, Espen;
Mazzarini, Francesco;
Musumeci, Giovanni;
Lelij, Roelant van der;
Schönenberger, Jasmin.
(2018)
New Constraints on the Evolution of the Inner Northern Apennines by K‐Ar Dating of Late Miocene‐Early Pliocene Compression on the Island of Elba, Italy.
Tectonics
Academic article
-
Flem, Belinda;
Eggen, Ola Anfin;
Torgersen, Espen;
Kongsvik, Marita Kjøsnes;
Ottesen, Rolf Tore.
(2018)
Urban geochemistry in Kristiansand, Norway.
Journal of Geochemical Exploration
Academic article
2015
-
Torgersen, Espen;
Viola, Giulio;
Sandstad, Jan Sverre.
(2015)
Revised structure and stratigraphy of the northwestern Repparfjord Tectonic Window, northern Norway.
Norsk Geologisk Tidsskrift
Academic article
-
Torgersen, Espen;
Viola, Giulio;
Zwingmann, Horst;
Henderson, Iain.
(2015)
Inclined K-Ar illite age spectra in brittle fault gouges: Effects of fault reactivation and wall-rock contamination.
Terra Nova
Academic article
-
Torgersen, Espen;
Viola, Giulio;
Sandstad, Jan Sverre;
Stein, Holly J.;
Zwingmann, Horst;
Hannah, Judith L..
(2015)
Effects of frictional-viscous oscillations and fluid flow events on the structural evolution and Re-Os pyrite-chalcopyrite systematics of Cu-rich carbonate veins in northern Norway.
Tectonophysics
Academic article
-
Torgersen, Espen;
Viola, Giulio;
Zwingmann, Horst;
Harris, C.
(2015)
Erratum to 'Structural and temporal evolution of a reactivated brittle-ductile fault - Part II: Timing of fault initiation and reactivation by K-Ar dating of synkinematic illite/muscovite' [Earth Planet. Sci. Lett. 407 (2014) 221-233].
Earth and Planetary Science Letters
Errata
-
Torgersen, Espen;
Viola, Giulio;
Zwingmann, Horst;
Harris, C.
(2015)
Erratum to: Structural and temporal evolution of a reactivated brittle-ductile fault - Part II: Timing of fault initiation and reactivation by K-Ar dating of synkinematic illite/muscovite.
Earth and Planetary Science Letters
Errata
-
Bingen, Bernard;
Solli, Arne;
Viola, Giulio;
Torgersen, Espen;
Sandstad, Jan Sverre;
Whitehouse, Martin J..
(2015)
Geochronology of the palaeoproterozoic kautokeino greenstone belt, finnmark, Norway: Tectonic implications in a fennoscandia context.
Norsk Geologisk Tidsskrift
Academic article
2014
-
Torgersen, Espen;
Viola, Giulio.
(2014)
Structural and temporal evolution of a reactivated brittle–ductile fault–Part I: Fault architecture, strain localization mechanisms and deformation history.
Earth and Planetary Science Letters
Academic article
-
Torgersen, Espen;
Viola, Giulio;
Zwingmann, Horst;
Harris, Chris.
(2014)
Structural and temporal evolution of a reactivated brittle–ductile fault–Part II: Timing of fault initiation and reactivation by K–Ar dating of synkinematic illite/muscovite.
Earth and Planetary Science Letters
Academic article
Journal publications
-
Dichiarante, Anna Maria;
Torgersen, Espen;
Redfield, Tim F.;
Köhler, Andreas;
Torabi, Anita;
Svendby, Anne Kathrine.
(2025)
Spectral Analysis of Topography as Proxy for Lineament Analysis.
Journal of Geophysical Research (JGR): Solid Earth
Academic article
-
Torgersen, Espen;
Gabrielsen, Roy Helge;
Ganerød, Morgan;
Lelij, Roelant van der;
Schönenberger, Jasmin;
Nystuen, Johan Petter.
(2022)
Repeated brittle reactivations of a pre-existing plastic shear zone: combined K-Ar and <sup>40</sup>Ar-<sup>39</sup>Ar geochronology of the long-lived (>700 Ma) Himdalen-Orje Deformation Zone, SE Norway.
Geological Magazine
Academic article
-
Viola, Giulio;
Musumeci, Giovanni;
Mazzarini, Francesco;
Tavazzani, Lorenzo;
Curzi, Manuel;
Torgersen, Espen.
(2022)
Structural characterization and K-Ar illite dating of reactivated, complex and heterogeneous fault zones: lessons from the Zuccale Fault, Northern Apennines.
Solid Earth (SE)
Academic article
-
Ryan, Eric James;
Papeschi, S.;
Viola, G.;
Musumeci, Giovanni;
Mazzarini, Francesco;
Torgersen, E..
(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
-
Flem, Belinda;
Torgersen, Espen;
Englmaier, Peter;
Andersson, Malin;
Finne, Tor Erik;
Eggen, Ola Anfin.
(2018)
Response of soil C-and O-horizon and terrestrial moss samples to various lithological units and mineralization in southern Norway.
Geochemistry: Exploration, Environment, Analysis
Academic article
-
Viola, Giulio;
Torgersen, Espen;
Mazzarini, Francesco;
Musumeci, Giovanni;
Lelij, Roelant van der;
Schönenberger, Jasmin.
(2018)
New Constraints on the Evolution of the Inner Northern Apennines by K‐Ar Dating of Late Miocene‐Early Pliocene Compression on the Island of Elba, Italy.
Tectonics
Academic article
-
Flem, Belinda;
Eggen, Ola Anfin;
Torgersen, Espen;
Kongsvik, Marita Kjøsnes;
Ottesen, Rolf Tore.
(2018)
Urban geochemistry in Kristiansand, Norway.
Journal of Geochemical Exploration
Academic article
-
Torgersen, Espen;
Viola, Giulio;
Sandstad, Jan Sverre.
(2015)
Revised structure and stratigraphy of the northwestern Repparfjord Tectonic Window, northern Norway.
Norsk Geologisk Tidsskrift
Academic article
-
Torgersen, Espen;
Viola, Giulio;
Zwingmann, Horst;
Henderson, Iain.
(2015)
Inclined K-Ar illite age spectra in brittle fault gouges: Effects of fault reactivation and wall-rock contamination.
Terra Nova
Academic article
-
Torgersen, Espen;
Viola, Giulio;
Sandstad, Jan Sverre;
Stein, Holly J.;
Zwingmann, Horst;
Hannah, Judith L..
(2015)
Effects of frictional-viscous oscillations and fluid flow events on the structural evolution and Re-Os pyrite-chalcopyrite systematics of Cu-rich carbonate veins in northern Norway.
Tectonophysics
Academic article
-
Torgersen, Espen;
Viola, Giulio;
Zwingmann, Horst;
Harris, C.
(2015)
Erratum to 'Structural and temporal evolution of a reactivated brittle-ductile fault - Part II: Timing of fault initiation and reactivation by K-Ar dating of synkinematic illite/muscovite' [Earth Planet. Sci. Lett. 407 (2014) 221-233].
Earth and Planetary Science Letters
Errata
-
Torgersen, Espen;
Viola, Giulio;
Zwingmann, Horst;
Harris, C.
(2015)
Erratum to: Structural and temporal evolution of a reactivated brittle-ductile fault - Part II: Timing of fault initiation and reactivation by K-Ar dating of synkinematic illite/muscovite.
Earth and Planetary Science Letters
Errata
-
Bingen, Bernard;
Solli, Arne;
Viola, Giulio;
Torgersen, Espen;
Sandstad, Jan Sverre;
Whitehouse, Martin J..
(2015)
Geochronology of the palaeoproterozoic kautokeino greenstone belt, finnmark, Norway: Tectonic implications in a fennoscandia context.
Norsk Geologisk Tidsskrift
Academic article
-
Torgersen, Espen;
Viola, Giulio.
(2014)
Structural and temporal evolution of a reactivated brittle–ductile fault–Part I: Fault architecture, strain localization mechanisms and deformation history.
Earth and Planetary Science Letters
Academic article
-
Torgersen, Espen;
Viola, Giulio;
Zwingmann, Horst;
Harris, Chris.
(2014)
Structural and temporal evolution of a reactivated brittle–ductile fault–Part II: Timing of fault initiation and reactivation by K–Ar dating of synkinematic illite/muscovite.
Earth and Planetary Science Letters
Academic article
Teaching
Courses
Outreach
2024
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PosterSvendby, Anne Kathrine; Torgersen, Espen; Redfield, Tim F.; Dichiarante, Anna Maria; Arctander, Karoline. (2024) Lineament analysis for characterizing regional fracture system – A case study from the Oslo region, Norway. EGU General Assembly 2024 , Wien 2024-04-14 - 2024-04-19
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PosterTorgersen, Espen; Arctander, Karoline; Redfield, Tim F.; Svendby, Anne Kathrine; Dichiarante, Anna Maria; Lie, Arntsen Mari. (2024) Are all lineaments the surface expression of faults and fractures? – A novel analysis using tunnel face mapping data from Norwegian road tunnels. EGU General Assembly 2024 , Wien 2024-04-14 - 2024-04-19
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PosterRedfield, Tim F.; Torgersen, Espen; Svendby, Anne Kathrine; Fabian, Karl Wilhelm Johannes; Dichiarante, Anna Maria; Oye, Volker. (2024) Some thoughts on the usefulness of Lineament Maps. EGU General Assembly 2024 , Wien 2024-04-14 - 2024-04-19
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PosterDichiarante, Anna Maria; Redfield, Tim F.; Torgersen, Espen; Svendby, Anne Kathrine; Oye, Volker. (2024) Spectral analysis as proxy for lineament spatial distribution: validation and case study. EGU General Assembly 2024 , Wien 2024-04-14 - 2024-04-19
2021
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Academic lectureTorgersen, Espen; Redfield, Thomas Fitzmaurice; Svendby, Anne Kathrine; Fabian, Karl. (2021) Hva skal vi med et lineamentkart?. Fjellsprengningskonferansen, Bergmekanikkdagen , Oslo 2021-11-25 - 2021-11-26
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PosterTorgersen, Espen; Arntsen, Mari Lie; Bingen, Bernard; Gasser, Deta; Gunleiksrud, Ida Hilde; Nilsson, Caroline. (2021) Nytt kart over Norges berggrunn 1:1,350,000 - forhåndsvisning. Norsk Geologisk Forening Vinterkonferanse , digital 2021-01-06 - 2021-01-08
2020
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PosterDichiarante, Anna Maria; Köhler, Andreas; Oye, Volker; Ghione, Federica; Mæland, Steffen; Redfield, Thomas Fitzmaurice. (2020) Towards real-time monitoring and multi-risk assessment using seismic/acoustic and remote sensing data in the Oslo region. Nordic Geological Winter Meeting 2020 2020-01-08 - 2020-01-10
2019
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Academic lectureTorgersen, Espen; Lutro, Ole; Solli, Arne; Gasser, Deta; Svendby, Anne Katrine; Bingen, Bernard. (2019) Towards a modern 1:250 000 national bedrock map database. 33rd Geological Winter Meeting , Bergen 2019-01-07 - 2019-01-09
2018
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Academic lectureTorgersen, Espen; Bingen, Bernard; Ganerød, Morgan. (2018) Tectonic basement slices in the décollement of the Scandinavian Caledonides: transition from thin-skinned to thick-skinned tectonics in collisional orogens. EGU General Assembly , Wien 2018-04-04 - 2018-04-13
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PosterTorgersen, Espen; Henderson, Iain H.C.; Bingen, Bernard; Svendby, Anne Katrine; Nasuti, Aziz. (2018) The Nisser Shear Zone – Discovery of a Sveconorwegian crustal - scale detachment zone in southern Norway. 33rd Nordic Geological Winter Meeting , Copenhagen 2018-01-10 - 2018-01-12
2017
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Academic lectureTorgersen, Espen; Viola, Giulio. (2017) Evidences of Silurian dextral transpression in the Scandinavian Caledonides. EGU General Assembly 2017 , Wien 2017-04-23 - 2017-04-28
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LectureHeldal, Tom; Solli, Arne; Torgersen, Espen. (2017) Using bedrock geology for making ecological base maps. EGU General Assembly 2017 , Wien 2017-04-23 - 2017-04-28
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Academic lectureTorgersen, Espen; Viola, Giulio; Sandstad, Jan Sverre; Melezhik, Victor. (2017) Structure, stratigraphy and age of the Repparfjord volcano–sedimentary succession, northern Norway; a revised geological framework of the sediment-hosted Nussir Cu-deposit. 32nd Geological Winter Meeting , Oslo 2017-01-09 - 2017-01-11
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PosterViola, Giulio; Torgersen, Espen; Mazzarini, Francesco; Musumeci, Giovanni; Garofalo, Paolo Stefano; Lelij, Roelant van der. (2017) Direct dating of Late Miocene-Early Pliocene compression on Elba Island: Is a new paradigm necessary for the opening of the Northern Tyrrhenian Sea?. EGU General Assembly 2017 , Wien 2017-04-23 - 2017-04-28
2014
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Academic lectureTorgersen, Espen; Viola, Giulio. (2014) Architecture of a dolostone-hosted brittle-ductile fault: effects of the interplay between weakening and strain localization mechanisms. EGU General Assembly 2014 , Wien 2014-04-27 - 2014-05-02
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Academic lectureTorgersen, Espen; Sandstad, Jan Sverre; Viola, Giulio; Melezhik, Victor. (2014) Paleoproterozoic sediment-hosted Cu-deposits in western Finnmark, northern Norway. The Arctic Days Conference 2014 , Tromsø 2014-06-02 - 2014-06-06
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Academic lectureKjøll, Hans Jørgen; Torgersen, Espen; Viola, Giulio. (2014) Caledonian shortening by combined folding and thrusting in the immediate footwall of the Caledonian sole thrust: The example of the Repparfjord Tectonic Window, northern Norway. EGU General Assembly 2014 , Wien 2014-04-27 - 2014-05-02
2013
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Academic lectureTorgersen, Espen; Viola, Giulio; Sandstad, Jan Sverre; Stein, Holly. (2013) Structural constraints on the formation of Cu-rich mesothermal vein deposits in the Repparfjord Tectonic Window, northern Norway. SGA biennial conference , Uppsala 2013-08-12 - 2013-08-15
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Academic lectureTorgersen, Espen; Viola, Giulio; Zwingmann, Horst. (2013) How can K-Ar geochronology of clay-size mica/illite help constrain reactivation histories of brittle faults? An example from a Paleozoic thrust fault in Northern Norway. EGU General Assembly , Wien 2013-04-07 - 2013-04-12
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PosterTorgersen, Espen; Viola, Giulio; Sandstad, Jan Sverre; Smeplass, Håvard. (2013) Structurally controlled copper mineralizations in the Paleoproterozoic Repparfjord Tectonic Window, Northern Norway. EGU General Assembly , Wien 2013-04-07 - 2013-04-12
2012
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LectureBunkholt, Ingjerd; Torgersen, Espen. (2012) Alle vil ha gråstein. Researchers Night (Forskningsdagene) , NTNU 2012-09-28 - 2012-09-28