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Gasser, Deta; Meyer, Gurli Birgitte; Ksienzyk, Anna Katharina; Ofstad, Frode; Augland, Lars Eivind & Slagstad, Trond
[Vis alle 7 forfattere av denne artikkelen]
(2023).
The Grønfjellet unit – an alkaline volcanic complex of uncertain tectonic affiliation in the eastern Trondheim Nappe Complex.
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Ryen, Sofie Hildegard; Lundmark, Anders Mattias & Augland, Lars Eivind
(2023).
The imbricate fans of Huk, Oslo.
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Zuchuat, Valentin; Augland, Lars Eivind; Jones, Morgan Thomas; Sleveland, Arve R.N.; Twitchett, Richard & Tovar, Francisco J Rodríguez
[Vis alle 13 forfattere av denne artikkelen]
(2022).
The Permian-Triassic boundary across the Barents Shelf: an intricate record of climate change, mass extinction, recovery, and basin reorganisation.
EGU General Assembly.
doi:
10.5194/egusphere-egu22-2379.
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Augland, Lars Eivind; Lundmark, Anders Mattias; Rian, Maiken Thorvaldsen & Jerram, Dougal Alexander
(2022).
Non-dissolved mantle zircons record hyper rapid translithospheric ascent of lamprophyres.
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Ryen, Sofie Hildegard; Lundmark, Anders Mattias & Augland, Lars Eivind
(2022).
How Caledonian structures camouflage as Permo-Carboniferous structures in the Oslo Region, Norway.
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Svebo, Joachim Røed; Lundmark, Anders Mattias & Augland, Lars Eivind
(2022).
Deciphering the setting of volcaniclastic and effusive Devonian magmatism in the Orcadian basin, Orkney Islands, Scotland.
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Zuchuat, Valentin; Augland, Lars Eivind; Jones, Morgan Thomas; Twitchett, Richard; Rodríguez-Tovar, Francisco J. & Hammer, Øyvind
[Vis alle 11 forfattere av denne artikkelen]
(2021).
Facies changes, volcanism, and mass extinction conundrum: the Permian-Triassic boundary across the Barents Sea Shelf.
Vis sammendrag
The most dramatic mass extinction the Earth has ever experienced occurred 252 million years ago, at the end of the Permian. It was likely triggered by the volcanic eruptions and magmatic intrusions associated with the Siberian Traps Large Igneous Province (LIP), leading to dramatic climatic changes, with consequences lasting well into the Early Triassic.
Here, we present a summary of the findings from the study of several sedimentary successions distributed across the Barents Sea that spanned the End Permian Mass Extinction (EPME) and the Permian-Triassic boundary. The four studied successions included the renowned Festningen section in the outer part of Isfjorden, western Spitsbergen; the DD-1 core and the associated river section in Deltadalen, central Spitsbergen; a core drilled offshore Kvitøya in northern Svalbard, and a core drilled on the Horda Platform in the Barents Sea. Datasets of various research lines were collected from these sections including sedimentology, organic geochemistry, isotope, geochronology, XRF, mineralogy, ichnology, palaeontology, palynology and digital outcrop data.
Historically, the Permian-Triassic boundary exposed today in Svalbard (and at various places across the High Arctic regions) was placed at the very prominent and abrupt facies change occurring between the siliceous mudstones or spiculites of the Kapp Starostin Formation, and the overlying soft, non-siliceous mudstones and siltstones of the Vardebukta and Vikinghøgda formations. The abruptness of this facies change, which also marks the demise of sponges, led to the belief that it represented a hiatus or a gap of several million years, with the uppermost Permian strata missing from the sedimentary record, while the mudstones of the Vardebukta and Vikinghøgda formations were definitely of Lower Triassic age, based on ammonoid biostratigraphy.
Hindeodus parvus, the conodont that defines the base of the Triassic, was for the first time identified in Svalbard a few meters above the lithostratigraphic boundary, which is therefore of Upper Permian age. Additionally, our new data show that sedimentation was continuous across this lithostratigraphic boundary. This transition from the Kapp Starostin Formation to the Vardebukta and Vikinghøgda formations was accompanied by a major reorganisation/inversion of the basin(s), but its exact nature remains puzzling.
Further, all measured sections record the EPME, which is associated with a 6-8 ‰ δ13CVPDB negative excursion, and measured between the lithostratigraphic and the Permian-Triassic boundaries. These negative isotopic excursions are found in close vicinity to several tephra layers that have been precisely dated at 252.13 ± 0.62 Ma, strongly suggesting a connection to the Siberian Traps LIP event. The mass extinction is also confirmed by the very rapid decreasing of trace fossil abundance and diversity, as anoxia spread across the water from proximal and shallow water to deeper settings. Geochemical and ichnological data indicate the occurrence of several anoxic pulses, intersected by very brief episodes of improved oxygenation levels. It took ca. 145 Kyr for life to recover after the extinction event, based on sedimentation rate calculations. Data also suggest that a shift towards more arid climatic conditions and increased eutrophication on land accompanied the EPME.
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Dalslåen, Bjørgunn Heggem; Gasser, Deta; Grenne, Tor; Andresen, Arild; Augland, Lars Eivind & Corfu, Fernando
(2020).
Tectonic evolution of Ordovician-Silurian rocks in the Oppdal area, southern Trondheim Nappe Complex.
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Ryen, Sofie Hildegard; Lundmark, Anders Mattias & Augland, Lars Eivind
(2020).
Investigating Tear Faults in the Oslo Region.
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Gasser, Deta; Grenne, Tor; Dalslåen, Bjørgunn Heggem; Corfu, Fernando; Augland, Lars Eivind & Bøe, Reidulv
[Vis alle 7 forfattere av denne artikkelen]
(2019).
Contemporaneous MORB-type and extremely enriched volcanic rocks in the central Scandinavian Caledonides: the effect of slab break-off after arc-continent collision and/or subduction initiation after polarity flip? .
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Grenne, Tor; Gasser, Deta; Corfu, Fernando; Augland, Lars Eivind; Bøe, Reidulv & Slagstad, Trond
(2019).
The Hølonda and Ilfjellet volcano-sedimentary basins of the central Norwegian Caledonides: Early/Middle Ordovician response to ophiolite obduction, subduction initiation and continental-arc establishment.
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Jones, Morgan Thomas; Stokke, Ella Wulfsberg; Pogge von Strandmann, Philip A.E.; Augland, Lars Eivind; Svensen, Henrik & Whiteside, Jessica H.
[Vis alle 7 forfattere av denne artikkelen]
(2019).
ASHLANTIC: A multi-proxy approach to understanding
the relationship between the NAIP and the PETM.
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Jones, Morgan Thomas; Stokke, Ella Wulfsberg; Pogge von Stradmann, Philip; Augland, Lars Eivind; Svensen, Henrik & Whiteside, Jessica H.
[Vis alle 7 forfattere av denne artikkelen]
(2019).
Ashlantic: A multi-proxy approach to understanding the relationship between the North Atlantic Igneous Province and the Paleocene-Eocene Thermal Maximum.
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Jochmann, Malte Michel; Augland, Lars Eivind; Lenz, Olaf; Bieg, Gerd; Haugen, Turid & Grundvåg, Sten-Andreas
[Vis alle 10 forfattere av denne artikkelen]
(2019).
Revised stratigraphy of Sylfjellet, Svalbard: a new contribution to the Paleogene Van Mijenfjorden Group.
Vis sammendrag
The strata of Sylfjellet, a mountain located on the northern side of Isfjorden, central Spitsbergen, have so far been solely assigned to the Lower Cretaceous (Harland et al., 1997; Braathen et al., 1999; Bergh et al., 2003,). The strata are incorporated in the Eurekan West Spitsbergen Fold and Thrust Belt (WSFTB) (Braathen et al., 1999; Dallmann, 2015, Piepjohn et al., 2016). Recent stratigraphic studies of the succession of presumable Early Cretaceous age suggested the presence of Paleogene strata. Thus, we revisited the site in order to find evidence for a Paleogene age of the strata. The outcomes of this study are presented here.
The area was mapped and the c. 250 m thick succession was logged. Samples were collected for both absolute (U/PB) and relative (palynological) dating methods. In addition, coal seams were analysed for vitrinite reflectance, allowing us to analyse the strata in a broader geological context.
Our findings show that parts of the investigated strata at Sylfjellet are of Paleogene age. The mapped succession was assigned to the Van Mijenfjorden Group and comprises the Firkanten, Basilika and Grumantbyen formations. They directly overlie Lower Cretaceous strata with a sedimentary contact. Since the strata are situated within the WSFTB, they represent a third tectonic outlier of the Van Mijenfjorden Group in Svalbard, in addition to the previously described Ny-Ålesund Subgroup and the Øyrlandet Graben deposits in southern Spitsbergen (Harland et al., 1997; Dallmann et al., 1999;).
Our stratigraphic revision of the Sylfjellet succession has several implications for the interpretation of the Paleogene depositional history and the interplay between Eocene sedimentation and tectonics. Vitrinite reflection data indicates that an Upper Eocene or Oligocene age for the Aspelintoppen Formation is precluded, or that alternatively an Upper Eocene/Oligocene folding and thrusting event must have taken place in this area.
Bergh, S., Ohta, Y., Andresen, A., Maher, H., Braathen, A. & Dallmann, W. (2003). Geological Map of Svalbard, 1: 100 000 Sheet B8G St. Jonsfjorden. Norsk Polarinstitutt Temakart (34).
Braathen, A., Bergh, S., Karlsen, F., Maher, H., Andresen, A., Hansen, A.-I. & Bergvik, A. (1999). Kinematics of the Isfjorden-Ymerbukta Fault Zone: a dextral oblique-thrust ramp in the Tertiary fold-thrust belt of Spitsbergen. Norsk Geologisk Tidsskrift 79, 227–240.
Dallmann, W. K. (editor), International Stratigraphic Committee for Svalbard (1999). Lithostratigraphic lexicon of Svalbard. Review and recommendations for nomenclature use. Upper Palaeozoic to Quaternary bedrock. Norwegian Polar Institute, Norway, 318 pages.
Dallmann, W. K. (editor) (2015). Geoscience Atlas of Svalbad. Norwegian Polar Institute Report Series No 148, Norwegian Polar Institute, Norway, 292 pages.
Harland, W. B., Anderson, L. M., Manasrah, D. & Butterfield, N. J. (1997). The Geology of Svalbard. Geological Society, London, Memoir No. 17, 521 pages.
Piepjohn, K., von Gosen, W. & Tessensohn, F. (2016). The Eurekan deformation in the Arctic: an outline. Journal of the Geological Society, 173, 1007–1024.
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Gasser, Deta; Grenne, Tor; Augland, Lars Eivind & Corfu, Fernando
(2019).
The Støren Group of the Trondheim Nappe Complex revisited: rift-related early/middle Ordovician volcanism and turbidite sedimentation at the onset of westward subduction? .
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Dalslåen, Bjørgunn Heggem; Gasser, Deta; Grenne, Tor; Augland, Lars Eivind & Corfu, Fernando
(2019).
The origin of Th-enriched volcanic rocks in Oppdal, central Norwegian Caledonides – implications for the evolution of Ordovician arc magmatism.
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Svebo, Joachim Røed; Lundmark, Anders Mattias & Augland, Lars Eivind
(2019).
High precision dating of the Devonian Hoy volcanics, Orkney, northern North Sea, and its implications.
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Dalslåen, Bjørgunn Heggem; Gasser, Deta; Grenne, Tor; Augland, Lars Eivind; Corfu, Fernando & Andresen, Arild
(2018).
Chemistry, age and tectonic evolution of the western Trondheim Nappe Complex in the Oppdal area, Central Norway.
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Lundmark, Anders Mattias; Augland, Lars Eivind & Jørgensen, Simen Varkøy
(2018).
How do digital tools influence geoscience students learning experience in the field?
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Svensen, Henrik; Jerram, Dougal Alexander; Polozov, Alexander; Jones, Morgan Thomas; Augland, Lars Eivind & Planke, Sverre
(2018).
Volcanic causes for the PETM and other past hothouse climates.
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Jones, Morgan Thomas; Stokke, Ella Wulfsberg; Schultz, Bo; Augland, Lars Eivind; Planke, Sverre & Tegner, Christian
[Vis alle 9 forfattere av denne artikkelen]
(2018).
Fur Island in Denmark: A window into Paleocene-Eocene hyperthermals and North Atlantic volcanism.
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Jerram, Dougal Alexander; Svensen, Henrik; Planke, Sverre; Millett, John M; Jones, Morgan Thomas & Augland, Lars Eivind
[Vis alle 7 forfattere av denne artikkelen]
(2018).
Types and styles of volcanism in the North Atlantic Igneous Province: Implications towards understanding their potential climatic impact.
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Augland, Lars Eivind; Lundmark, Anders Mattias & Bjerga, Audun Dalane
(2018).
Early mid-Devonian volcanism dates initiation of the Orcadian basin in the Orkney Islands, Scotland.
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Lundmark, Anders Mattias; Augland, Lars Eivind & Bjerga, Audun Dalane
(2018).
Syn-collisional Scandian extension and magmatism on the Orkney Islands, Scotland.
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Gasser, Deta; Grenne, Tor & Augland, Lars Eivind
(2017).
The enigmatic Gula Complex of the central Norwegian Caledonides: new
constraints on age and origin from zircon dating and geochemistry.
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Jones, Morgan Thomas; Augland, Lars Eivind; Shephard, Grace; Burgess, Seth; Eliassen, Gauti & Jerram, Dougal Alexander
[Vis alle 10 forfattere av denne artikkelen]
(2017).
Bentonite layers in Svalbard: constraining sources of volcanism, geochronology, and relative plate motions during the Paleogene.
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Jones, Morgan Thomas; Augland, Lars Eivind; Burgess, Seth; Eliassen, Gauti; Svensen, Henrik & Jerram, Dougal Alexander
[Vis alle 9 forfattere av denne artikkelen]
(2016).
Bentonite layers in Svalbard: constraining sources of volcanism, geochronology, and relative plate motions during the Paleocene and Eocene.
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Jones, Morgan Thomas; Augland, Lars Eivind; Tegner, Christian; Planke, Sverre; Jerram, Dougal Alexander & Callegaro, Sara
[Vis alle 8 forfattere av denne artikkelen]
(2016).
Volcano-climate interactions during the Paleocene-Eocene Thermal Maximum: Assessing the impact of the North Atlantic Igneous Province from the Fur Formation, Denmark.
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Jones, Morgan Thomas; Augland, Lars Eivind; Svensen, Henrik; Tegner, Christian; Planke, Sverre & Willumsen, Pi Suhr
(2016).
Volcano-climate interactions during the PETM and U-Pb dating from the Fur Formation, Denmark.
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Planke, Sverre; Zuchuat, Valentin; Svensen, Henrik; Hammer, Øyvind; Braathen, Alvar & Silkoset, Petter
[Vis alle 27 forfattere av denne artikkelen]
(2016).
Coring and High-Resolution Imaging of the Permian-Triassic Boundary in Deltadalen, Svalbard.
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Augland, Lars Eivind; Jones, Morgan Thomas; Svensen, Henrik & Tegner, Christian
(2016).
Closing in on the Palaeocene-Eocene Thermal Maximum in the North Atlantic: chronostratigraphy and ash bed provenance through high precision U-Pb and Lu-Hf isotopic analyses of zircons.
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Augland, Lars Eivind; Jones, Morgan Thomas; Planke, Sverre; Svensen, Henrik & Tegner, Christian
(2016).
Evaluating the provenance of Permian-Triassic and Palaeocene-Eocene ash beds by high precision U-Pb and Lu-Hf isotopic analyses of zircons: linking local sedimentary records to global events.
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Gasser, Deta; Grenne, Tor; Corfu, Fernando & Augland, Lars Eivind
(2016).
Characterization of depositional age and structure of sedimentary successions by U-Pb TIMS and LA-ICP-MS dating of volcanic horizons and detrital zircons: an example from the western Trondheim Nappe Complex, Scandinavian Caledonides.
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Jones, Morgan Thomas; Eliassen, Gauti Trygvason; Burgess, Seth; Augland, Lars Eivind; Svensen, Henrik & Planke, Sverre
[Vis alle 8 forfattere av denne artikkelen]
(2015).
Palaeocene-Eocene volcanism in the Arctic: Basin development and continental breakup constrained by ash layers in Svalbard.
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Steltenpoh, M.; Andresen, Arild; Augland, Lars Eivind; Prouty, J. & Corfu, Fernando
(2014).
Implications of Laurentian Grenville crust in the northern Scandinavian Caledonides.
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Steltenpohl, Mark G.; Andresen, Arild; Augland, Lars Eivind & Agyei-Dwarko, Nana Yaw
(2014).
Implications of Laurentian Grenville crust in the northern Scandinavian Caledonides.
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Andresen, Arild; Agyei-Dwarko, Nana Yaw; Steltenpohl, Mark G. & Augland, Lars Eivind
(2014).
Terranes within the Arctic Caledonides and their constraints on Early Paleozoic orogenic evolution.
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Augland, Lars Eivind; Andresen, Arild & Steltenpohl, Mark G.
(2013).
U-Pb ID-TIMS zircon ages and coupled Lu-Hf S-ICP-MS data - A tool for terrane characterisation and determination of paleogeopgraphic affinities: An example from the Caledonides.
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Buchanan, John; Bowman, Dannena; Steltenpohl, Mark G.; Hames, Willis; Augland, Lars Eivind & Andresen, Arild
(2012).
40Ar/39Ar muscovite thermochronology and structural evolution of southern Liverpool Land, East Greenland.
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Augland, Lars Eivind; Prouty, Jonathan; Corfu, Fernando; Andresen, Arild; Agyei-Dwarko, Nana Yaw & Steltenpohl, Mark G.
(2012).
Intercontinental interactions: Laurentian crustal pieces in the northern Scandinavian Caledonides.
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Augland, Lars Eivind; Andresen, Arild; Corfu, Fernando; Simonsen, Siri Lene & Andersen, Tom
(2012).
The Beiarn Nappe Complex: a record of Laurentian Early Silurian arc magmatism in the Uppermost Allochthonon, Scandinavian Caledonides.
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Andresen, Arild; Augland, Lars Eivind; Moecher, David; Richarde, Gabriel; Bruechner, Hannes & Ravna, Erling J Krogh
(2012).
P-T-t constraints on subduction and exhumation of the Liverpool Land Eclogite Terrane (LLET), East Greenland Caldonides.
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Augland, Lars Eivind; Prouty, Jonathan; Corfu, Fernando; Andresen, Arild; Agyei-Dwarko, Nana Yaw & Steltenpohl, Mark G.
(2011).
Intercontinental interactions: Laurentian crustal pieces in the northern Scandinavian Caledonides.
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Andresen, Arild; Agyei-Dwarko, Nana Yaw; Augland, Lars Eivind & Andersen, Tom
(2011).
Source areas for post-Caledonian sedimentary basin deposits in the North Atlantic region: How diagnostic are they?
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Andresen, Arild; Augland, Lars Eivind & Agyei-Dwarko, Nana Yaw
(2011).
The Landegode-Heggmovatn “basement terranes” – fragments of the Laurentian Grenville Orogen in the Scandinavian Caledonides?
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Moecher, David; Richarde, Gabriel; Andresen, Arild & Augland, Lars Eivind
(2011).
Keeping it hot but not too heavy:Low pressure eclogite with a granulite facies overprint in Liverpool Land, East Greenland Caledonides.
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Lamminen, Jarkko Tapani; Andresen, Arild & Augland, Lars Eivind
(2011).
The provenance signature of the Liverpool Land Eclogite Terrane, East Greenland: implications for provenance studies in the North Atlantic Region.
Abstracts and Proceedings of the Geological Society of Norway.
1.
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Augland, Lars Eivind; Andresen, Arild & Agyei-Dwarko, Nana
(2011).
The Bodø-Landegode Gneiss Complex: an exotic Neoproterozoic terrane in the Caledonides of Northern Norway.
Abstracts and Proceedings of the Geological Society of Norway.
1.
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Agyei-Dwarko, Nana Yaw; Andresen, Arild & Augland, Lars Eivind
(2011).
The Heggmovatn "Basement Dome", Nordland: a Caledonian thrust sheet of Laurentian origin.
NGF abstracts and proceedings.
1,
s. 1–1.
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Andresen, Arild; Lundmark, Anders Mattias & Augland, Lars Eivind
(2010).
The East African Orogen viewed from Egypt.
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Andresen, Arild; Agyei-Dwarko, Nana & Augland, Lars Eivind
(2010).
New data on basement-cover relationships in the Bodø-Sulitjelma area, North Norwegian Caledonides.
NGF abstracts and proceedings.
1,
s. 8–9.
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Augland, Lars Eivind; Andresen, Arild & Corfu, Fernando
(2010).
The-Mid-Silurian Beiarn magmatic complex: a clue tonorthward-younging subduction along Laurentia`s North-Easter nmargin.
NGF abstracts and proceedings.
1.
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Augland, Lars Eivind; Andresen, Arild & Corfu, Fernando
(2010).
Laurentian and Baltican crust juxtaposed in LiverpoolLand, East Greenland.
NGF abstracts and proceedings.
1,
s. 10–11.
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Augland, Lars Eivind; Andresen, Arild & Corfu, Fernando
(2010).
A Baltican ancestry of the Liverpool Land eclogite terrane, East Greenland.
Geophysical Research Abstracts.
ISSN 1029-7006.
12(EGU2010-10534).
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Augland, Lars Eivind; Andresen, Arild & Corfu, Fernando
(2010).
A Baltican ancestry of the Liverpool Land eclogite terrane, East Greenland.
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Prouty, Jonathan M.; Augland, Lars Eivind; Agyei-Dwarko, Nana Yaw; Andresen, Arild & Steltenpohl, Mark G.
(2010).
Basement-cover relations in the Norwegian Celedonides between 67o and 69o N latitudes.
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Lundmark, Anders Mattias; Andresen, Arild; Augland, Lars Eivind & Andersen, Tom
(2009).
The Neoproterozoic East African Orogen viewed from the Eastern Desert, Egypt: an ID-TIMS age and in situ LA-ICPMS Hf isotopic study.
NGF abstracts and proceedings.
1,
s. 67–67.
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Andresen, Arild; Lundmark, Anders Mattias & Augland, Lars Eivind
(2009).
New U-Pb ages and Hf-isotope data on selected plutons from the Central Eastern Desert, Egypt.
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Andresen, Arild; Augland, Lars Eivind & Lundmark, Anders Mattias
(2009).
The Eastern Desert Shear Zone: Age and tectonic significance.
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Augland, Lars Eivind; Andresen, Arild & Corfu, Fernando
(2009).
The Caledonian Liverpool Land Eclogite Terrane, East Greenland: Baltic basement "orphaned" in Laurentia?
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Augland, Lars Eivind; Andresen, Arild & Corfu, Fernando
(2009).
From Late Ordovician-Silurian Arc Magmatism to Devonian Terrane Amalgamation and Juxtaposition of Baltican and Laurentian Crust: New Evidence from Liverpool Land, East Greenland Caledonides.
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Buchanan, John; Augland, Lars Eivind; Steltenpohl, Mark G. & Andresen, Arild
(2007).
Structural and petrological framework of a Caledonian eclogite terrane within the southern Liverpool Land, East Greenland.
Abstracts with programs (Geological Society of America).
ISSN 0016-7592.
39(6).
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Augland, Lars Eivind; Andresen, Arild; Corfu, Fernando; Buchanan, John & Steltenpohl, Mark G.
(2007).
The Liverpool Land Eclogite Terrane - A piece of Baltica within the East Greenland Caledonides.
Abstracts with programs (Geological Society of America).
ISSN 0016-7592.
39(6).