The magnetisation of Rosemary Bank Seamount, Rockall Trough, northeast Atlantic

Miles, P. R.; Roberts, D.G.

doi:10.1016/0012-821x(81)90060-1

Cited by 12 publications

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“…K-Ar (whole rock) ages have been obtained from samples in all the wells and boreholes described (1989), Morton et al (1988b), Waagstein (1988), Miles & Roberts (1981), Buckley & Bailey (1975), Omran (1990), Hald & Waagstein (1991) above (Jones et al 1986;Stoker et al 1988;Hitchen & Ritchie 1993). Apart from the Jones et al (1986) dredge sample, ages were obtained from rocks which are petrographically fresh and show no obvious anomalies in the experimental details.…”

Section: North Rockall Trough -Hebrides Lavasmentioning

confidence: 99%

Early Paleogene offshore igneous activity to the northwest of the UK and its relationship to the North Atlantic Igneous Province

Ritchie

Hitchen

1996

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Offshore occurrences of Early Tertiary igneous rocks to the northwest of Britain are allocated to seven major categories using criteria such as geographical location, structure, age and genetic relationship. The categories are: (1) Faeroe Plateau Lava Group; (2) North Rockall Trough-Hebrides Lava Group; (3) central igneous complexes; (4) volcaniclastic rocks; (5) Faeroe-Shetland Intrusive Complex; (6) the Minch; and (7) Wyville-Thomson Ridge. An igneous chronology is presented based on radiometric age dating (mainly K-Ar whole rock), biostratigraphical data and seismic relationships.Most landward central complexes (i.e. Skye, Rhum, Ardnamurchan, Mull, Arran) pre-date those which are more oceanward (i.e. Erlend, Darwin, St Kilda, Rockall). Exceptions to this trend (i.e. Rosemary Bank, Anton Dohrn, Hebrides Terrace) are probably genetically linked to crustal thinning in the Rockall Trough. The age of the Faeroe Plateau Lava Group, and especially the contiguous Rockall Trough-Hebrides Lava Group, are not particularly well constrained.The main intrusive phase on, and to the southeast of, the Faeroe Islands (i.e. Faeroe-Shetland Intrusive Complex) was a relatively late stage magmatic event, coeval with the opening of the North Atlantic between Greenland and NW Europe.

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