Early Tertiary plume uplift of the North Sea and Faeroe-Shetland Basins

Nadin, P. A.; Kusznir, Nick; Cheadle, M. J.

doi:10.1016/s0012-821x(97)00035-6

Cited by 94 publications

(82 citation statements)

References 28 publications

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“…The later Eocene extension in NW Britain has been interpreted to result from broadly NW-SE-directed crustal extension associated with the opening of the North Atlantic (Geoffroy, Bergerat & Angelier, 1996). The Early Palaeogene magmatism in NW Britain has been associated with melting of the 'Iceland Plume' (Kent & Fitton, 2000;Upton et al 2002), although Nadin, Kusznir & Cheadle (1997) tentatively suggested that a separate distinct mantle plume may have been active in the NW Britain area during this period. Tectonic activity has also been invoked by some authors to have facilitated melt generation in the area (Upton et al 2002;Chambers,centres An Early Palaeogene triple junction to the NNE off Shetland has been suggested by Burke & Dewey (1973), and an additional contemporaneous magmatic centre was active further to the NNE off the SW Norwegian coast.…”

Section: The Spatial Distribution Of Known and Inferred Magmatic Centmentioning

confidence: 99%

The onset of the North Atlantic Igneous Province in a rifting perspective

et al. 2009

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Abstract -The processes that led to the onset and evolution of the North Atlantic Igneous Province (NAIP) have been a theme of debate in the past decades. A popular theory has been that the impingement on the lower lithosphere of a hot mantle plume (the 'Ancestral Iceland' plume) initiated the first voluminous outbursts of lava and initiated rifting in the North Atlantic area in Early Palaeogene times. Here we review previous studies in order to set the NAIP magmatism in a time-space context. We suggest that global plate reorganizations and lithospheric extension across old orogenic fronts and/or suture zones, aided by other processes in the mantle (e.g. local or regional scale upwellings prior to and during the final Early Eocene rifting), played a role in the generation of the igneous products recorded in the NAIP for this period. These events gave rise to the extensive Paleocene and Eocene igneous rocks in W Greenland, NW Britain and at the conjugate E Greenland-NW European margins. Many of the relatively large magmatic centres of the NAIP were associated with transient and geographically confined doming in Early Paleocene times prior to the final break-up of the North Atlantic area.

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Section: The Spatial Distribution Of Known and Inferred Magmatic Centmentioning

confidence: 99%

The onset of the North Atlantic Igneous Province in a rifting perspective

et al. 2009

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“…Following Morgan (1971), most workers have explained the Early Paleogene volcanism of the NAIP in terms of lithospheric impingement of the proto-Iceland mantle plume, and a wide variety of ideas on plume size, plume origin and path, and the possibility of multiple plume heads or pulsating plumes have been discussed in the literature in this context (e.g., Lawver and Müller, 1994;White et al, 1995;Nadin et al, 1997;Saunders et al, 1997;Torsvik et al, 2001). This evolution of the mantle plume concept has been addressed by several authors (e.g., Anderson and Natland, 2005;Foulger, 2005), and alternative hypotheses on NAIP formation have been formulated over the last 10 years or so.…”

Section: Introduction: Challenging the Mantle Plume Conceptmentioning

confidence: 99%

The North Atlantic Igneous Province: A review of models for its formation

Meyer

Wijk²,

Gernigon³

2007

Special Paper 430: Plates, Plumes and Planetary Processes

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The mantle plume concept is currently being challenged as an explanation for North Atlantic Igneous Province formation. Alternative models have been suggested, including delamination, meteorite impact, small-scale rift-related convection, and chemical mantle heterogeneities. We review available datasets on uplift, strain localization, age and chemistry of igneous material, and tomography for the North Atlantic Igneous Province, and compare them with predictions from the mantle plume and alternative models. The mantle plume concept is quite successful in explaining formation of the NAIP, but unexplained aspects remain. Delamination and impact models are currently not supported. Rift-related small-scale convection models appear to be able to explain volcanic rifted margin volcanism well. However, the most important problem that non-plume models need to overcome is the continuing, long-lived melt anomaly extending via the Greenland-Faeroe Ridges to Iceland. Mantle heterogeneities, resulting from an ancient subducted slab, are included in plate tectonic models to explain the continuing melt production as an alternative to the mantle plume model, but there are still uncertainties related to this idea that need to be solved.

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“…A full understanding of fluid migration pathways, thermal history and diagenetic processes related to hot fluid migration is, therefore, extremely important in the effective development of hydrocarbon provinces in ocean margin settings. At least two major episodes of hot fluid migration have been recognized on the NW UK Atlantic Margin -a Late Jurassic-Early Cretaceous rift-related pulse and a Tertiary event ascribed to magmatic activity (Nadin et al 1997;Clift 1999;Dean et al 1999;Naylor et al 1999;Parnell et al 1999). Apatite fission track analyses (AFTA), vitrinite reflectance and fluid inclusion microthermometry have shown that these hot fluid pulses involved fluids which record palaeotemperatures up to 200 C Parnell et al 1999) which indicates rapid emplacement.…”

Section: Introductionmentioning

confidence: 99%