Browsing Institutt for geofag by Author "Jerram, Dougal Alexander"
Now showing items 1-20 of 20
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Kjoberg, Sigurd; Schmiedel, Tobias; Planke, Sverre; Svensen, Henrik; Millett, John; Jerram, Dougal Alexander; Galland, Olivier; Lecomte, Isabelle; Schofield, Nick; Haug, Øystein Thorden; Helsem, Andreas (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)The mid-Norwegian margin is regarded as an example of a volcanic-rifted margin, formed prior to and during, Paleogene breakup of the northeast Atlantic. The area is characterized by the presence of voluminous basaltic ...
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Eide, Christian Haug; Schofield, Nick; Jerram, Dougal Alexander; Howell, John Anthony (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)Igneous sills are common components in rifted sedimentary basins globally. Much work has focused on intrusions emplaced at relatively shallow palaeodepths (0 – 1.5 km). However, owing to constraints of seismic reflection ...
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Wakeford, Zoe E; Chmielewska, Magda; Hole, Malcolm J; Howell, John A.; Jerram, Dougal Alexander (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)Volcanoes are a potential hazard to over 750 million people worldwide. Accessing them to install monitoring equipment can be logistically challenging and dangerous. Traditional monitoring equipment is expensive and not ...
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Jones, Morgan Thomas; Augland, Lars Eivind; Shephard, Grace; Burgess, Seth; Eliassen, Gauti Trygvason; Jochmann, Malte; Friis, Bjarki; Jerram, Dougal Alexander; Planke, Sverre; Svensen, Henrik (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Radioisotopic dating of volcanic minerals is a powerful method for establishing absolute time constraints in sedimentary basins, which improves our understanding of the chronostratigraphy and evolution of basin processes. ...
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Callegaro, Sara; Svensen, Henrik Hovland; Neumann, Else Ragnhild; Planke, Sverre; Jerram, Dougal Alexander; Polozov, Alexander; Deegan, Frances M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Abstract A vast portion of the plumbing system of the Siberian Traps Large Igneous Province (STLIP) is emplaced in the Tunguska Basin, where borehole data reveal ubiquitous and abundant sills with great lateral extension. ...
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Svensen, Henrik; Torsvik, Trond Helge; Callegaro, Sara; Augland, Lars Eivind; Heimdal, Thea Hatlen; Jerram, Dougal Alexander; Planke, Sverre; Pereira, Egberto (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Gondwana was an enormous supertarrane. At its peak, it represented a landmass of about 100 × 106 km2 in size, corresponding to approximately 64% of all land areas today. Gondwana assembled in the Middle Cambrian, merged ...
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Reynolds, P.; Planke, Sverre; Millett, J.M.; Jerram, Dougal Alexander; Trulsvik, M.; Schofield, N.; Myklebust, R. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)Continental rifting is often associated with voluminous magmatism and perturbations in the Earth's climate. In this study, we use 2D seismic data from the northeast Greenland margin to document two Paleogene-aged sill ...
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Planke, Sverre; Millett, John M; Maharjan, Dwarika; Jerram, Dougal Alexander; Abdelmalak, Mohamed Mansour; Groth, Audun; Hoffmann, Jasper; Berndt, Christian; Myklebust, Reidun (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Voluminous igneous complexes are commonly present in sedimentary basins on volcanic rifted margins, and they represent a challenge for petroleum explorationists. A 2500 km2 industry-standard 3D seismic cube has recently ...
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Walker, Faye; Planke, Sverre; Millett, John; Jerram, Dougal Alexander (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Abstract The nature and growth of magmatic plumbing systems are of fundamental importance to igneous geology. Traditionally, magma chambers have been viewed as rapidly emplaced bodies of molten rock or partially ...
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Angkasa, Syahreza Saidina; Jerram, Dougal Alexander; Millett, John M; Svensen, Henrik; Planke, Sverre; Taylor, Ross A; Schofield, Nick; Howell, John (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)The emplacement of large intrusive complexes into sedimentary basins can have profound effects on host sedimentary rocks including deformation, thermal aureole metamorphic reactions, alteration of fluid-flow pathways, and ...
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Corseri, Romain; Senger, Kim; Selway, Katherine; Abdelmalak, Mohamed Mansour; Planke, Sverre; Jerram, Dougal Alexander (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)A highly conductive body (0.1–0.8 Ω·m) is identified at mid-crustal depth (8–13 km) in the north Gjallar Ridge from magnetotelluric (MT) data and further investigated in light of other remote-sensing geophysical data ...
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Augland, Lars Eivind; Ryabov, Viktor V.; Vernikovsky, Valery A.; Planke, Sverre; Polozov, Alexander; Callegaro, Sara; Jerram, Dougal Alexander; Svensen, Henrik (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Emplacement of large volumes of (sub)volcanic rocks during the main pulse of the Siberian Traps occurred within <1 m.y., coinciding with the end-Permian mass extinction. Volcanics from outside the main Siberian Traps, e.g. ...
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Schmiedel, Tobias; Kjoberg, Sigurd; Planke, Sverre; Magee, Craig; Galland, Olivier; Schofield, Nick; Jackson, Christopher A.-L.; Jerram, Dougal Alexander (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)The emplacement of igneous intrusions into sedimentary basins mechanically deforms the host rocks and causes hydrocarbon maturation. Existing models of host-rock deformation are investigated using high-quality 3D seismic ...
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Berndt, Christian; Planke, Sverre; Teagle, Damon; Huismans, Ritske; Torsvik, Trond Helge; Frieling, Joost; Jones, Morgan Thomas; Jerram, Dougal Alexander; Tegner, Christian; Faleide, Jan Inge; Coxall, Helen; Hong, Wei-Li (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)The northeast Atlantic encompasses archetypal examples of volcanic rifted margins. Twenty-five years after the last ODP (Ocean Drilling Program) leg on these volcanic margins, the reasons for excess melting are still ...
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Pierdominici, Simona; Millet, John M.; Kück, Jochem K. M.; Thomas, Donald; Jerram, Dougal Alexander; Planke, Sverre; Haskins, Eric; Lautze, Nicole; Galland, Olivier (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Knowledge of the in situ stress state of the Earth's crust plays a key role in understanding geological processes including plate tectonics, earthquakes, slope failure, and igneous emplacement. In this paper, we determine ...
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Galland, Olivier; Villar, Héctor J.; Mescua, José; Jerram, Dougal Alexander; Midtkandal, Ivar; Palma, J. Octavio; Planke, Sverre; Zanella, Alain (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Abstract Cooling subvolcanic igneous intrusions are known to have a substantial impact on fluid flow in the shallow Earth's crust, for example activation of geothermal systems, circulation of mineralized fluids in ore ...
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Svensen, Henrik; Jerram, Dougal Alexander; Polozov, Alexander; Planke, Sverre; Neal, Clive R.; Augland, Lars Eivind; Emeleus, Henry C. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)Large igneous provinces (LIPs) are extraordinary igneous and tectonic events that have influenced the planet in profound ways, including the major turnovers in the history of life. The LIP concept, definitions, and terminology ...
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Eide, Christian Haug; Schofield, Nick; Howell, John Anthony; Jerram, Dougal Alexander (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)Igneous sheet-complexes transport magma through the crust, but most studies have focused on single segments of the magma transport system or have low resolution. In the Jameson Land Basin in East Greenland, seismic reflection ...
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Jerram, Dougal Alexander; Millett, John M; Kück, Jochem; Thomas, Donald; Planke, Sverre; Haskins, Eric; Lautze, Nicole; Pierdominici, Simona (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)To help understand volcanic facies in the subsurface, data sets that enable detailed comparisons between down-hole geophysical data and cored volcanic intervals are critical. However, in many cases, the collection of ...
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Hafeez, Amer; Planke, Sverre; Jerram, Dougal Alexander; Millett, John M; Maharjan, Dwarika; Prestvik, Tore (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Continental breakup between northwest Europe and Greenland (approximately 56 Ma) was associated with widespread magmatism. Silica undersaturated alkaline porphyritic igneous rocks of a similar age have previously been ...