Northeast Atlantic breakup volcanism and consequences for Paleogene climate change – MagellanPlus Workshop report

Berndt, Christian; Teagle, D.A.H.; Huismans, Ritske S.; Torsvik, Trond H.; Frieling, Joost; Jones, Morgan T.; Jerram, Dougal A.; Tegner, Christian; Faleide, Jan Inge; Coxall, Helen; Hong, Wei-Li

doi:10.5194/sd-26-69-2019

Cited by 9 publications

(5 citation statements)

References 116 publications

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“…Continental extension, breakup, and the formation of new mid-oceanic spreading centers are fundamental parts of the plate tectonic cycle and have wide implications for the global environment (Berndt et al, 2019). Passive rifted margin studies have been at the core of the International Ocean Discovery Program (IODP) and its predecessors since the 1960s.…”

Section: Introductionmentioning

confidence: 99%

Expedition 396 Preliminary Report: Mid-Norwegian Margin Magmatism and Paleoclimate Implications

Berndt¹,

Zarikian²

2022

International Ocean Discovery Program Preliminary Report

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The opening of the North Atlantic about 56 My ago was associated with the emplacement of the North Atlantic Igneous Province, including the deposition of voluminous extrusive basaltic successions and intrusion of magma into the surrounding sedimentary basins. The mid-Norwegian Margin is a global type example of such volcanic rifted margins and is well suited for scientific drilling with its thin sediment cover and good data coverage. During International Ocean Discovery Program Expedition 396, 21 boreholes were drilled at 10 sites in five different geological settings on this volcanic margin. The boreholes sampled a multitude of igneous and sedimentary settings ranging from lava flow fields to hydrothermal vent complexes, along with thick successions of upper Paleocene and lower Eocene strata. A comprehensive suite of wireline logs was collected in eight boreholes. The main goals of the expedition were to provide constraints for geodynamic models to test different hypotheses that can explain the rapid emplacement of large igneous provinces and the hypothesis that the associated Paleocene/Eocene Thermal Maximum was caused by hydrothermal release of carbon in response to magmatic intrusions. Successful drilling, combined with high core recovery of target intervals of all nine primary sites and one additional alternate site, should allow us to achieve these goals during postcruise work.

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Section: Introductionmentioning

confidence: 99%

Expedition 396 Preliminary Report: Mid-Norwegian Margin Magmatism and Paleoclimate Implications

Berndt¹,

Zarikian²

2022

International Ocean Discovery Program Preliminary Report

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show abstract

“…Continental extension, breakup, and the formation of new mid-oceanic spreading centers are fundamental parts of the plate tectonic cycle and have wide implications for the global environment (Berndt et al, 2019). Rifted margin studies have been at the core of the International Ocean Discovery Program (IODP) and its predecessors since the 1960s.…”

Section: Introductionmentioning

confidence: 99%

Expedition 396 summary

Berndt¹,

Zarikian²,

Agarwal³

et al. 2023

Proceedings of the International Ocean Discovery Program

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“…It is likely, based on the size and shape of these features and comparison to Møre, Faroe-Shetland and Rockall Basin examples, that there is more complexity to be understood here (cf. Berndt et al 2019). Within the inboard Vøring area, Bergslien & Syvertsen (2015) described, for example the Ygg High, as an "outer high" but this is not identified as such in margin-wide maps (e.g.…”

Section: A C C E P T E Dmentioning

confidence: 99%

The spatial distribution of igneous centres along the Norwegian Atlantic Margin (Møre and Vøring) and their relationship to magmatic plumbing systems

Kilhams

Chedburn

Schofield

et al. 2021

JGS

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A series of offshore intra-basinal igneous centres have been documented across the North Atlantic Igneous Province including the United Kingdom, Ireland and Greenland. However, inconsistent cross-border terminology implies that similar features are not present in the Norwegian offshore which, in turns, leads to misperceptions of cross-border geological differences. This manuscript presents evidence for a series of Norwegian igneous centres and suggests a consistent non-genetic cross-border terminology. In the Møre Basin, several igneous centres sit close to the continent ocean boundary (COB) which have previously been identified as seamounts and/or ‘outer highs’. To provide cross-border consistency these features are consolidated under umbrella terms; igneous centres or volcanic fissures. Further centres are likely present within the Møre Basin (east of the COB) where 3D seismic data were not available. In the Vøring Basin two new igneous centres, one intrusive and one extrusive, are identified within the continental domain. Additionally, a possible deep magmatic upwelling associated with the regionally significant T-Reflector is identified. These igneous centre end-members represent the complexity of the magmatic plumbing across the Norwegian margin. With further data it is likely that further igneous centres will be identified offshore mid Norway.

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Northeast Atlantic breakup volcanism and consequences for Paleogene climate change – MagellanPlus Workshop report

Cited by 9 publications

References 116 publications

Expedition 396 Preliminary Report: Mid-Norwegian Margin Magmatism and Paleoclimate Implications

Expedition 396 Preliminary Report: Mid-Norwegian Margin Magmatism and Paleoclimate Implications

Expedition 396 summary

The spatial distribution of igneous centres along the Norwegian Atlantic Margin (Møre and Vøring) and their relationship to magmatic plumbing systems

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