Alvar Braathen

• Maher, Harmon; Braathen, Alvar; Ganerød, Morgan; Myhre, Per Inge; Osmundsen, Per Terje & Redfield, Thomas Fitzmaurice (2023). Discussion on ‘Paleozoic sedimentation and Caledonian terrane architecture in NW Svalbard: indications from U–Pb geochronology and structural analysis’ by Koglin et al. 2022 (JGS, 179, jgs2021-053) . Journal of the Geological Society. ISSN 0016-7649. 180(4). doi: 10.1144/jgs2022-179.
• Haines, Emma Michie & Braathen, Alvar (2023). How displacement analysis may aid fault risking strategies for CO<inf>2</inf> storage. Basin Research. ISSN 0950-091X. 36(1). doi: 10.1111/bre.12807. Full text in Research Archive
• Olaussen, Snorre; Grundvåg, Sten-Andreas; Senger, Kim; Anell, Ingrid; Betlem, Peter & Birchall, Thomas [Show all 15 contributors for this article] (2023). Svalbard Composite Tectono-Sedimentary Element, Barents Sea” . Geological Society of London Memoirs. ISSN 0435-4052. 57. doi: 10.1144/M57-2021-36. Full text in Research Archive Show summary

  The Svalbard Composite Tectono-Sedimentary Element (SCTSE) is located on the northwestern corner of the Barents Shelf and comprises a Carboniferous–Pleistocene sedimentary succession. Due to Cenozoic uplift, the succession is subaerially exposed in the Svalbard archipelago. The oldest parts of the succession consist of Carboniferous–Permian mixed siliciclastic, carbonate and evaporite, and spiculitic sediments that developed during multiple phases of extension. The majority of the Mesozoic succession is composed of siliciclastic deposits formed in sag basins and continental platforms. Episodes of Late Jurassic and Early Cretaceous contraction are evident in the eastern part of thearchipelago and in nearby offshore areas. Differential uplift related to the opening of the Amerasian Basin and the Cretaceous emplacement of the High Arctic Large Igneous Province created a major hiatus spanning from the Late Cretaceous and early Danian throughout the SvalbardCTSE. The West Spitsbergen Fold and Thrust Belt and the associated foreland basin in central Spitsbergen (Central Tertiary Basin) formed as a response to the Eurekan Orogeny and the progressive northward opening of the North Atlantic during the Paleogene. This event was followed by the formation of yet another major hiatus spanning the Oligocene–Pliocene. Multiple reservoir and source-rock units exposed in Svalbardprovide analogues to the prolific offshore acreages in the SW Barents Sea, and are important for the de-risking of plays and prospects. However, the archipelago itself is regarded as a high-risk acreage for petroleum exploration. This is due to Paleogene contraction and late Neogene uplift of the western and central parts in particular. There is an absence of mature source rocks in the east, and the entire region is subjected to strict environmental protection

• Osmundsen, Per Terje; Svendby, Anne Kathrine; Braathen, Alvar; Bakke, Beate & Andersen, Torgeir Bjørge (2023). Fault growth and orthogonal shortening in transtensional supradetachment basins: Insights from the `Old Red´ of western Norway. Basin Research. ISSN 0950-091X. 35(4), p. 1407–1432. doi: 10.1111/bre.12759. Show summary

  For basins that evolve adjacent to large-magnitude normal faults, tectonic controls on sedimentation involve isostatic back rotation of an exhuming footwall and, commonly, the evolution of kilometre-scale extension-parallel folds. Based on observations from classic localities in western Norway, we propose a three-stage evolution scenario for transtensional supradetachment basins where the basins become progressively re-arranged because of core complex exhumation and subsequent orthogonal shortening. Extension-parallel transverse synclines initially form due to a normal displacement gradient, but when displacements accumulate beyond a certain magnitude, the hanging wall increasingly responds to core complex exhumation and the original depocentre, formed close to the original area of maximum displacement, will become inverted and dismembered above the core complex. Two new synclinal depocentres will develop along the flanks. Because these synclines form by extensional fault growth rather than by shortening, they will be associated with widening of the basin and onlap onto basement at high angles to the maximum elongation trend with overall grain-size decrease and retrogradational stacking patterns. Further, because these synclines grow away from the evolving core complex, sedimentary units will become asymmetrically distributed inside each syncline in such a way that the oldest deposits in the syncline will be preserved on the flank most proximal to the core complex. In transtensional environments, a third evolutionary stage may involve constrictional strain where extension-parallel folds and reverse faults produced by orthogonal shortening enhance or interact with other structures. Ultimately, initial extensional sub-basins may become warped across extension-parallel folds. Hanging wall deformation will be manifested in shifting accommodation patterns, with depocentres that generally migrate in the direction of the detachment fault. Accommodation patterns initially related to megafault growth may conceptually evolve into depocentres controlled by orthogonal shortening.

• Horota, Rafael Kenji; Senger, Kim; Rodes, Nil; Betlem, Peter; Smyrak-Sikora, Aleksandra & Jonassen, Marius Opsanger [Show all 8 contributors for this article] (2023). West Spitsbergen fold and thrust belt: A digital educational data package for teaching structural geology. Journal of Structural Geology. ISSN 0191-8141. 167. doi: 10.1016/j.jsg.2022.104781. Full text in Research Archive Show summary

  The discipline of structural geology is taking an advantage of compiling observations from multiple field sites to comprehend the bigger picture and constrain the region's geological evolution. In this study we demonstrate how integration of a range of geospatial digital data sets that relate to the Paleogene fault and thrust belt exposed in the high Arctic Archipelago of Svalbard, is used in teaching in bachelor-level courses at the University Centre in Svalbard. This event led to the formation of the West Spitsbergen Fold and Thrust Belt and its associated foreland basin, the Central Spitsbergen Basin. Our digital educational data package builds on published literature from the past four decades augmented with recently acquired high-resolution digital outcrop models, and 360° imagery. All data are available as georeferenced data containers and included in a single geodatabase, freely available for educators and geoscientists around the world to complement their research and fieldwork with course components from Svalbard.

• Maher, Harmon; Braathen, Alvar; Ganerød, Morgan; Osmundsen, Per Terje; Redfield, Tim & Myhre, Per Inge [Show all 8 contributors for this article] (2022). Core complex fault rocks of the Silurian to Devonian Keisarhjelmen detachment in NW Spitsbergen. In Kuiper, Yvette D. (Eds.), New Developments in the Appalachian-Caledonian-Variscan Orogen. The Geological Society of America. ISSN 978-0-8137-2554-3. p. 265–286. doi: 10.1130/2022.2554(11). Show summary

  A Silurian-Devonian metamorphic core complex has recently been recognized in northwest Spitsbergen, on the northwest corner of the Barents Shelf at the junction between the Atlantic and Arctic oceans. The associated Keisarhjelmen detachment, a major, ductile-brittle fault zone, is 200-500 m thick and has a map trace >150 km. A top-to-the-north transport direction is parallel to the axis of a large-scale, shallowly north-plunging, detachment corrugation. This detachment zone separates overlying faulted Silurian-Devonian aged cover strata from underlying migmatitic rocks in the core. The detachment shows a diverse array of fault and metamorphic rocks with structural ascent, ranging from sheared migmatite, mylonite, ultramylonite, foliated cataclasite, pseudotachylite, and breccia. Footwall post-kinematic granitic intrusions occurred shortly prior to, and likely during, deposition of the older cover strata. Variably deformed, syn-kinematic granitic sheets and veins within the detachment zone are considered coeval. Thin sections show significant grain size reduction, porphyroclasts, and well-developed composite fault surfaces. Relict garnet sigma porphyroclasts associated with chlorite and sericite indicate retrogression. Feldspar porphyroclasts show significant sericite alteration, undulose extinction and limited recrystallization low in the detachment, and brittle deformation throughout. Quartz deformation textures and grain size vary considerably within and between samples. Deformation during retrogression continued into the brittle realm with the development of thick foliated cataclasites, fault breccias, and local pseudotachylites concentrated at the top of the detachment. Biotite in particular shows grain size reduction, concentration along C-surfaces, and shredding and redistribution, suggesting it played a significant role in both ductile and brittle faulting. Veins, micro-veins, and fluid inclusion planes are ubiquitous throughout the detachment, indicating substantial fault-related fluid flow. Given existing geochronologic and P-T (pressure-temperature) data from the basement rocks of the area, the kinematics, retrogression, and ductile-brittle transition are consistent with exhumation of a core complex developing by orogen-parallel extension associated with transtension during the Late Silurian and Early to Middle Devonian in northwest Spitsbergen. Remaining questions include how this core complex connects with coeval plate-scale strike-slip faults in Svalbard, and its relationship to mainland Norwegian core complexes and Devonian basins to the south.

• Würtzen, Camilla Louise; Braathen, Alvar; Poyatos-Moré, Miquel; Mulrooney, Mark Joseph; Line, Lina Hedvig & Midtkandal, Ivar (2022). Impact of faulting in depocentres development, facies assemblages, drainage patterns, and provenance in continental half-graben basins: An example from the Fanja Basin of Oman. Basin Research. ISSN 0950-091X. 00, p. 1–39. doi: 10.1111/bre.12731. Full text in Research Archive
• Holden, Nora; Osmond, Johnathon L.; Mulrooney, Mark Joseph; Braathen, Alvar; Skurtveit, Elin & Sundal, Anja (2022). Structural characterization and across-fault seal assessment of the Aurora CO<inf>2</inf> storage site, northern North Sea. Petroleum Geoscience. ISSN 1354-0793. 28(4). doi: 10.1144/petgeo2022-036. Full text in Research Archive
• Osmond, Johnathon; Mulrooney, Mark Joseph; Holden, Nora; Skurtveit, Elin; Faleide, Jan Inge & Braathen, Alvar (2022). Structural traps and seals for expanding CO<inf>2</inf> storage in the northern Horda platform, North Sea. American Association of Petroleum Geologists Bulletin. ISSN 0149-1423. 106(9), p. 1711–1752. doi: 10.1306/03222221110. Show summary

  Development and maturation of geological carbon dioxide (CO2) storage projects along the Norwegian Continental shelf is ongoing, but even more storage locations are needed to reach climate mitigation goals by 2050. To augment the future Aurora injection site and expand CO2 storage in the northern Horda platform of the North Sea, the region’s potential must be assessed. Here, we leverage the latest wellbore and seismic data to map storage aquifers, identify structural traps, and assess possible top and fault seals associated with Lower and Upper Jurassic storage complexes in four major fault blocks. Our results indicate that both storage complex aquifers are preserved throughout the study area. From our minimum size criteria, we have identified a total of 95 Lower and 64 Upper Jurassic traps representing approximately 2.37 × 1010 and 5.80 × 1010 m3 in gross rock volume, respectively. Mapping, modeling, and formation pressure analyses suggest that top seals are sufficiently thick over the majority of structural traps and provide vertical pressure barriers between storage aquifers. Across-fault juxtaposition seals are abundant but dominate the Upper Jurassic storage complexes. Lower Jurassic aquifers, however, are often upthrown against Upper Jurassic aquifers, but apparent across-fault pressure differentials and shale gouge ratio values >0.15 correlate, suggesting fault rock membrane seal presence. Aquifer self-juxtapositions, however, are likely areas with poor fault seal. Overall, our work provides added support that the northern Horda platform represents a promising location for CO2 storage expansion, carrying the potential to become a future storage hub in the North Sea.

• Faleide, Thea Sveva; Braathen, Alvar; Lecomte, Isabelle Christine & Anell, Ingrid (2022). Exploring seismic detection and resolution thresholds of fault zones and gas seeps in the shallow subsurface using seismic modelling. Marine and Petroleum Geology. ISSN 0264-8172. 143. doi: 10.1016/j.marpetgeo.2022.105776. Full text in Research Archive

View all works in Cristin

• Holden, Nora; Alaei, Behzad; Skurtveit, Elin & Braathen, Alvar (2024). The impact of depth conversion on fault geometry and its influence on fault-risk assessment in the Smeaheia storage site .
• Hansen, Torsten Hundebøl; Blondel, Simon; Evans, Sian Lianne; Bruhn, Rikke & Braathen, Alvar (2024). CCNS - Evaluating CO2-storage potential offshore Southern Norway.
• Blondel, Simon; Evans, Sian Lianne; Bruhn, Rikke & Braathen, Alvar (2023). CO2 storage research and Cross-border synergies in the southern Norwegian North Sea.
• Blondel, Simon; Evans, Sian Lianne; Hansen, Torsten Hundebøl; Bruhn, Rikke & Braathen, Alvar (2023). CO2 storage research and cross-border synergies: Underground CO2 storage potential assessment in the western Norwegian-Danish basin.
• Blondel, Simon; Evans, Sian Lianne; Bruhn, Rikke & Braathen, Alvar (2023). CO2 storage research and cross-border synergies: Underground CO2 storage potential assessment in the western Norwegian-Danish basin.
• Evans, Sian Lianne; Blondel, Simon; Braathen, Alvar & Bruhn, Rikke (2023). Evolution of salt diapirs in the Norwegian NDB.
• Evans, Sian Lianne; Blondel, Simon; Braathen, Alvar & Bruhn, Rikke (2023). Optimising Site Selection for CO2 Storage in Salt Basins: the Norwegian-Danish Basin, a future European energy hub.
• Evans, Sian Lianne; Blondel, Simon; Braathen, Alvar & Bruhn, Rikke (2023). CO2 storage in salt basins: Influence of salt tectonics on seal integrity and containment risk.
• Evans, Sian Lianne; Blondel, Simon; Braathen, Alvar & Bruhn, Rikke (2023). CO2 storage in salt basins: Influence of salt tectonics on seal integrity and containment risk.
• Skurtveit, Elin; Midtkandal, Ivar & Braathen, Alvar (2023). A naturally occurring CO2 laboratory in Utah.
• Skurtveit, Elin; Petrie, Elizabeth S.; Smith, Scott Adam; Faleide, Thea Sveva; Sundal, Anja & Choi, Jung Chan [Show all 10 contributors for this article] (2023). Core analysis from Little Grand Wash fault, Utah, and application for fault risk assessment for co2 storage in the Norwegian North Sea. Show summary

  Fault zones contain a mixture of lithologies, various fault structures, and evidence for fluid-rock interaction events, representing a record of multiple deformation events during the faulting history. The resulting complex and highly variable mixture of properties makes faults challenging structures to model, and specifically assessing the fault zone permeability and probability of reactivation is difficult. The ability of fault zones to transport fluids has received renewed attention during the last 10 years of developing subsurface, geological storage reservoirs for CO2. The North Sea sedimentary basin offshore Norway has an enormous potential for storing CO2. However, to qualify fault traps in saline aquifers for storage, improved workflows for fault risk assessment focusing on fault zone flow properties and mechanical stability is needed. An improved approach for fault modelling is under development: we quantify the uncertainties in fault rock properties to address the probability of failure and subsequent changes in permeability. To support our understanding of subsurface faults in the North Sea, we utilize knowledge from the Little Grand Wash (LGW) fault, located in Emery County, Utah. The LGW fault zone provides a natural laboratory to study fault zone development in geological analogues, failure mechanisms, and fluid migration. As a supplement to already published well data and core descriptions from this area, three new cores were retrieved from the fault in 2019. In total 16.5 meters of core, covering both the hanging wall (Jurassic Brushy Basin Member of the Morrison Formation) and footwall (Jurassic Summerville Formation) damage zone, have been logged and sampled for petrophysical analysis and mechanical testing. The current work presents new data on variation of permeability, porosity, strength, and sonic velocity inside the fault damage zone, including measurements on different lithologies, various types of cementation and selected deformation bands, fractures, and veins. Petrophysical and chemical analysis combined with visual identification of oil stains and bleaching provide the possibility for a holistic understanding of the system and we derive valuable knowledge for improving fault risk workflows applicable for CO2 storage projects in the Norwegian North Sea.

• Osmond, J.L.; Holden, Nora; Mulrooney, Mark Joseph; Skurtveit, Elin; Faleide, Jan Inge & Braathen, Alvar (2023). Beyond Aurora and Smeaheia; structural traps and seals for additional CO2 storage within Jurassic Horda Platform aquifers.
• Holden, Nora; Alaei, Behzad; Skurtveit, Elin & Braathen, Alvar (2023). Uncertainty in fault-risking. Influence of depth-conversion on fault-geometry and fault-risk assessment in the Smeaheia CO2 storage site .
• Holden, Nora; Alaei, Behzad; Skurtveit, Elin & Braathen, Alvar (2023). Implications of depth-conversion on fault geometries and fault-risk assessment in the Smeaheia CO2 storage site, northern North Sea.
• Holden, Nora; Alaei, Behzad; Skurtveit, Elin & Braathen, Alvar (2023). Uncertainty in fault-risk assessment - implications of depth-conversion on fault-risk assessment in the Smeaheia CO2 storage site, northern North Sea.
• Holden, Nora; Osmond, Johnathon L.; Mulrooney, Mark Joseph; Skurtveit, Elin; Sundal, Anja & Braathen, Alvar (2023). Structural characterization and across-fault seal assessment of the Aurora CO2 storage site.
• Parcher, J. & Braathen, Alvar (2023). Basement-top plays and Jurassic deposits off the Utsira High (Johan Sverdrup Field) .
• Blinkenberg, Kasper & Braathen, Alvar (2023). Zechstein carbonates of the Utsira High region .
• Osmundsen, P.T. & Braathen, Alvar (2023). Setting of the Frøya High and its northwards continuation to the Norland Ridge .
• Peron-Pinvidic, Gwen & Braathen, Alvar (2023). Evolution of the mid-Norwegian margin – from rift to breakup .
• Braathen, Alvar (2023). Plans for a Suprabasins-II proposal (to Petromaks2: 15/2 or 15/9-23?) .
• Osmundsen, P.T. & Braathen, Alvar (2023). From rift-fault to mega-fault: fault throw and rollback impacting basin geometries .
• Braathen, Alvar (2023). Impact of fault-elastic rebound for sediment characteristics in hanging wall basins: observations and cases .
• Braathen, Alvar (2023). Isostatic rollback of faults and perched basins – some observations .
• Braathen, Alvar (2023). Introduction to Utsira High proper .
• Braathen, Alvar & Midtkandal, Ivar (2023). Plans for a Suprabasins-II proposal .
• Braathen, Alvar (2023). Plans for a Suprabasins-II proposal .
• Braathen, Alvar (2023). Status on Suprabasins .
• Braathen, Alvar (2023). Introduction to Suprabasins .
• Anell, Ingrid; Braathen, Alvar; Midtkandal, Ivar; Grimsrud Olsen, Stine; Haugen, Maria & Wallace, Malcolm W (2022). Geometric controls on clinoforms, the building blocks of sedimentary basins – from ripple to shelf-edge.
• Gresseth, Julie & Braathen, Alvar (2022). Deep structures of the Bjarmland Platform region - Devonian tectonics guiding subsequent faulting in the Barents Shelf.
• Julian, Janocha & Braathen, Alvar (2022). Upper Devonian to Permian source rock potential on Bjørnøya and implications for the Barents Shelf.
• Dahlin, Anders & Braathen, Alvar (2022). Sørkapp-Hornsund High (South Spitsbergen) as an analogue to the Loppa High.
• Braathen, Alvar & Midtkandal, Ivar (2022). Suprabasins – where do we go? .
• Würtzen, Camilla Louise; Midtkandal, Ivar; Mulrooney, Mark Joseph & Braathen, Alvar (2022). Fault-influence in alluvial deposits of the Qahlah Formation - provenance, depocenter development, drainage patterns, and facies assemblage of Upper Cretaceous Fanja Basin, northeastern Oman.
• Midtkandal, I; Braathen, Alvar & Osmundsen, Per Terje (2022). Rift footwall range geomorphology as a function of fault length and throw.
• Smyrak-Sikora, Aleksandra; Augland, Amund; Betlem, Peter & Braathen, Alvar (2022). Deep-time paleoclimate events preserved in Svalbard’s rock record – a review. 35th IAS Meeting of Sedimentology.
• Evans, Sian Lianne; Blondel, Simon & Braathen, Alvar (2022). How much structure is too much? De-risking CO2 storage sites in under-explored basins.
• Smyrak-Sikora, Aleksandra; Blinkenberg, Kasper; Braathen, Alvar & Dahlin, Anders (2022). Carboniferous–Permian rift systems in Svalbard. .
• Blinkenberg, Kasper; Hodgkins, Malcolm & Braathen, Alvar (2022). U/Pb geochronology status meeting .
• Blinkenberg, Kasper & Braathen, Alvar (2022). Carbonate systems conference, Naples. Presented Zechstein study. LS + KHB + AD participated from Suprabasins.
• Blinkenberg, Kasper; Rameil, Niels & Braathen, Alvar (2022). Core workshop and core viewing of Zechstein material.
• Blinkenberg, Kasper; polonio, israel; Rameil, Niels & Braathen, Alvar (2022). Lundin carbonates .
• Blinkenberg, Kasper; polonio, israel & Braathen, Alvar (2022). Zechstein collaboration work .
• Blinkenberg, Kasper; polonio, israel & Braathen, Alvar (2022). Zechstein meeting .
• Blinkenberg, Kasper; Hodgskiss, Malcolm S. W. & Braathen, Alvar (2022). U/Pb dating of Zechstein carbonates.
• Blinkenberg, Kasper; polonio, israel & Braathen, Alvar (2022). Follow-up meeting .
• Blinkenberg, Kasper; polonio, israel & Braathen, Alvar (2022). Zechstein meeting .
• Blinkenberg, Kasper; Stemmerik,, Lars & Braathen, Alvar (2022). Permian carbonates of the Utsira High – new learnings. .
• Osmundsen, Per Terje; Peron, Gwenn; Gresseth, Julie Linnea Sehested & Braathen, Alvar (2022). 3D evolution of exensional detachment faults and their effect on the architecture of rifts and rifted margins .
• Osmundsen, Per Terje; Peron, Gwenn; Gresseth, Julie Linnea Sehested & Braathen, Alvar (2022). 3D evolution of large-magnitude extensional faults and their effects on the architecture of rifts and rifted margins.
• Smyrak-Sikora, Aleksandra & Braathen, Alvar (2022). Carboniferous to Permian rift deposits in Svalbard.
• Osmundsen, Per Terje & Braathen, Alvar (2022). Evolution of border faults in rifts and at rifted margins: tectono-sedimentary relationships produced by large-magnitude faulting and successive incision.
• Peron-Pinvidic, Gwen & Braathen, Alvar (2022). Prolonged evolution from rift to passive margin – the Mid-Norwegian Shelf.
• Stemmerik, Lars; Olaussen, Snorre & Braathen, Alvar (2022). Late Permian-Early Triassic synrift basin fill: Breakup of Pangea and the first brick in the puzzle of NE Atlantic-Arctic Mesozoic-early Cenozoic continental extension.
• Stemmerik, Lars & Braathen, Alvar (2022). Permian karstification in the northern North Atlantic and central Arctic .
• Würtzen, Camilla Louise & Braathen, Alvar (2022). Fault-influence on the alluvial Upper Cretaceous Fanja Basin of northeastern Oman.
• Poyatos-Moré, Miquel; Vicedo, v & Braathen, Alvar (2022). Depositional signatures and Tethys biostratigraphy of Paleogene tectonic keel basin – Ibra Basin, Oman.
• Redfield, Tim F.; Osmundsen, Per Terje & Braathen, Alvar (2022). A possible neotectonic signal derived from rivers of the MTFC - can a similar method be applied to offshore top basement grids? .
• Braathen, Alvar & Midtkandal, Ivar (2022). Suprabasins – where do we go? .
• Braathen, Alvar (2022). Suprabasins – status on project.
• Braathen, Alvar (2022). Fault-driven morphology of rifts.
• Braathen, Alvar (2022). Suprabasins - Welcome and Introduction.
• Braathen, Alvar (2022). Tectonic setting of basins in Oman, and their relevance to North Sea studies.
• Braathen, Alvar (2022). Suprabasins Introduction; rift morphology.
• Braathen, Alvar; Midtkandal, Ivar & Osmundsen, Per Terje (2022). Geomorphology of continental rift landscapes - analyses inspired by North Sea observations.
• Puig, Josep & Braathen, Alvar (2022). Shallow marine sedimentary architecture of Jurassic growth-basin proximal to exhumed basement – the Johan Sverdrup case.
• Hassan, Muhammad & Braathen, Alvar (2022). Tectonic evolution of the Utsira High region.
• Puig, Jose Maria; Braathen, Alvar & Howel, John (2022). Shallow marine sedimentary architecture of Jurassic growth-basin proximal to exhumed basement – the Johan Sverdrup case.
• Høj Blinkenberg, Kasper; Braathen, Alvar; Stemmerik, Lars; Gianotten, Ingrid Piene & Polonio, Israel (2022). Permian carbonates of the Utsira High - new learnings.
• Würtzen, Camilla Louise; More, M.P; Midtkandal, Ivar & Braathen, Alvar (2022). The impact of faulting in depocentre development, facies assemblages, drainage patterns, and provenance in continental half‐graben basins: an example from the Fanja Basin of Oman. Basin Research.
• Holden, Nora; Osmond, Johnathon; Mulrooney, Mark Joseph; Skurtveit, Elin; Braathen, Alvar & Sundal, Anja (2022). Influence of faults on Co2 migration.
• Osmond, Johnathon; Mulrooney, Mark Joseph; Holden, Nora; Skurtveit, Elin; Faleide, Jan Inge & Braathen, Alvar (2022). Past fluid containment and present applications toward future CO2 storage in the northern Horda Platform, offshore Norway.
• Vicedo, v; Robles-Salcedo, R; Poyatos-Moré, Miquel; Braathen, Alvar & Midtkandal, Ivar (2022). Evolution of a Paleogene shallow-marine platform in the northern sector of the Ibra Basin (NE Oman).
• Braathen, Alvar (2022). Fault zone architecture and seismic imaging.
• Skurtveit, Elin; Bjørnarå, Tore Ingvald; Haines, Emma Michie; Gasda, Sarah Eileen; Eidsvig, Unni & Braathen, Alvar (2022). Updated workflow for fault risk assessment and application to Vette Fault Zone, Horda Platform, offshore Norway.
• Haines, Emma Michie & Braathen, Alvar (2022). Strategies to De-Risk Faults in the Subsurface for CO2 Storage: A Case Study from Smeaheia.
• Braathen, Alvar; Skurtveit, Elin; Mulrooney, Mark Joseph; Haines, Emma Michie; Faleide, Thea Sveva & Osmond, Johnathon [Show all 10 contributors for this article] (2022). Understanding faults and their influence on fluid flow.
• Osmond, Johnathon; Mulrooney, Mark Joseph; Holden, Nora; Skurtveit, Elin; Faleide, Jan Inge & Braathen, Alvar (2022). Quaternary stratigraphy and pockmark mapping in the Norwegian Channel, northern North Sea.
• Osmond, Johnathon; Mulrooney, Mark Joseph; Würtzen, Camilla Louise; De La Cruz, E.; Skurtveit, Elin & Faleide, Jan Inge [Show all 7 contributors for this article] (2022). Upper Jurassic through Lower Cretaceous seal characterization in the northern Horda Platform.
• Osmond, Johnathon; Mulrooney, Mark Joseph; Holden, Nora; Skurtveit, Elin; Faleide, Jan Inge & Braathen, Alvar (2022). Screening traps and seals for CO2 storage expansion in the northern Horda Platform, Norwegian North Sea. Show summary

  Evaluation and development of new and exciting CO2 storage opportunities on the Norwegian Continental Shelf is on the rise. Of note is the Aurora site located in northern Horda Platform of the Norwegian North Sea, where injection is scheduled to commence in 2024 under project Longship. While the planned injection volumes at Aurora are over 1.5 megatonnes per year, many more storage locations are required in order to meet international climate mitigation targets by 2050. Other parts of the northern Horda Platform show CO2 storage potential, but additional subsurface characterization is required. As a contribution towards this effort, I present two possible Jurassic storage complexes (Lower and Upper), where I discuss the presence of available storage aquifers, structural traps, as well as top and fault seals. Overall, our work supports the notion that the northern Horda Platform may be capable of hosting a future CO2 storage hub for northern Europe.

• Osmond, Johnathon; Mulrooney, Mark Joseph; Holden, Nora; Skurtveit, Elin; Faleide, Jan Inge & Braathen, Alvar (2022). Distribution of faulted Mesozoic and Tertiary seals for CO2 storage in the northern Horda Platform, Norwegian North Sea. Show summary

  This lecture summarizes a recent case study involving the derisking of geological seals for a potential offshore CO2 storage site. In the northern Horda Platform of the northern North Sea, the structural and stratigraphic architecture of the producing Troll East hydrocarbon field is directly analogous to the Alpha CO2 storage prospect in the Smeaheia fault block just to the east of the field. Building on this observation, we have mapped the proven regional seal units of Troll East in order to extrapolate and understand their distribution throughout the northern Horda Platform. Here, we utilize our results to compare Alpha with Troll East, and discuss top and fault seal presence in the context of derisking Alpha’s CO2 storage prospectivity.

• Skurtveit, Elin; Bjørnarå, Tore Ingvald; Michie, Emma; Gasda, Sarah Eileen; Keilegavlen, Eirik & Sandve, Tor Harald [Show all 10 contributors for this article] (2022). Updated workflow for fault risk assessment and application to Vette Fault Zone, Horda Platform, offshore Norway.
• Wu, Long; Skurtveit, Elin; Thompson, Nicholas D.; Michie, Emma; Fossen, Haakon & Braathen, Alvar [Show all 9 contributors for this article] (2022). Containment Risk Assessment and Management of CO2 Storage on the Horda Platform .
• Haines, Emma Michie & Braathen, Alvar (2022). Strategies to De-Risk Faults in the Subsurface for CO2 Storage: A Case Study from Smeaheia.
• Haines, Emma Michie; Braathen, Alvar & Alaei, Behzad (2022). How Fault Interpretation Method May Influence the Assessment of a Fault-bound CO2 Storage Site.
• Betlem, Peter; Senger, Kim; Braathen, Alvar; Skurtveit, Elin; Park, Joonsang & Lecomte, Isabelle Christine [Show all 7 contributors for this article] (2023). De-risking top seal integrity: Imaging heterogeneity across shale-dominated cap rock sequences. Universitetet i Oslo. ISSN 1501-7710.
• Braathen, Alvar & Eliassen, Gard (2023). Sele Ridge tectonics. Universitetet i Oslo.
• Braathen, Alvar & Ekrene Johansen, Sindre (2022). Tectono-sedimentary evolution of NW parts of the Devonian Hornelen Basin, West Norway. Universitetet i Oslo.
• Jarl, Espelund & Braathen, Alvar (2022). Extensional fault growth in high-resolution seismic data. Universitetet i Oslo.

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