Rockall Trough - Cretaceous or Late Palaeozoic?
The Rockall Trough is the most southerly and widest part of the pre-Tertiary "proto North Atlantic' rift zone running from the Porcupine Bank region west of Ireland to the Voring Plateau off central Norway. Although the northerly part of this rift is intra-continental, the southern part is...
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Geological Society Publishing House
1989
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Online Access: | http://eprints.gla.ac.uk/213892/ |
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ftuglasgow:oai:eprints.gla.ac.uk:213892 2023-05-15T17:30:20+02:00 Rockall Trough - Cretaceous or Late Palaeozoic? Smythe, D.K. 1989-07-01 http://eprints.gla.ac.uk/213892/ unknown Geological Society Publishing House Smythe, D.K. <http://eprints.gla.ac.uk/view/author/5066.html> (1989) Rockall Trough - Cretaceous or Late Palaeozoic? Scottish Journal of Geology <http://eprints.gla.ac.uk/view/journal_volume/Scottish_Journal_of_Geology.html>, 25(1), pp. 5-43. (doi:10.1144/sjg25010005 <http://dx.doi.org/10.1144/sjg25010005>) Articles PeerReviewed 1989 ftuglasgow 2020-09-24T22:09:36Z The Rockall Trough is the most southerly and widest part of the pre-Tertiary "proto North Atlantic' rift zone running from the Porcupine Bank region west of Ireland to the Voring Plateau off central Norway. Although the northerly part of this rift is intra-continental, the southern part is quasi-oceanic in origin, but of uncertain age. The many arguments for Cretaceous sea floor spreading are evaluated in turn; the few apparently valid ones remaining are shown to relate not directly to the Rockall Trough, but to a newly-identified spreading phase of approximately mid-Cretaceous age which partially opened up the Hatton-Rockall Basin. The opening of the Rockall Trough predates this. Stratigraphic evidence suggests that the proto North Atlantic is pre-Cretaceous, and probably even pre-Jurassic, in age. The rival arguments for late Palaeozoic (late Carboniferous-early Permian) sea floor spreading are all consistent with an important phase of rifting at that time, but they provide no direct evidence for opening. A tentative conclusion is that the Rockall Trough was initiated as a rift, and then opened by a quasi- sea floor spreading mechanism, during the late Carboniferous to early Permian. Article in Journal/Newspaper North Atlantic University of Glasgow: Enlighten - Publications Hatton-Rockall Basin ENVELOPE(-17.000,-17.000,57.500,57.500) Norway Porcupine Bank ENVELOPE(-13.667,-13.667,53.333,53.333) Rockall Trough ENVELOPE(-15.036,-15.036,53.825,53.825) Scottish Journal of Geology 25 1 5 43 |
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Open Polar |
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University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
unknown |
description |
The Rockall Trough is the most southerly and widest part of the pre-Tertiary "proto North Atlantic' rift zone running from the Porcupine Bank region west of Ireland to the Voring Plateau off central Norway. Although the northerly part of this rift is intra-continental, the southern part is quasi-oceanic in origin, but of uncertain age. The many arguments for Cretaceous sea floor spreading are evaluated in turn; the few apparently valid ones remaining are shown to relate not directly to the Rockall Trough, but to a newly-identified spreading phase of approximately mid-Cretaceous age which partially opened up the Hatton-Rockall Basin. The opening of the Rockall Trough predates this. Stratigraphic evidence suggests that the proto North Atlantic is pre-Cretaceous, and probably even pre-Jurassic, in age. The rival arguments for late Palaeozoic (late Carboniferous-early Permian) sea floor spreading are all consistent with an important phase of rifting at that time, but they provide no direct evidence for opening. A tentative conclusion is that the Rockall Trough was initiated as a rift, and then opened by a quasi- sea floor spreading mechanism, during the late Carboniferous to early Permian. |
format |
Article in Journal/Newspaper |
author |
Smythe, D.K. |
spellingShingle |
Smythe, D.K. Rockall Trough - Cretaceous or Late Palaeozoic? |
author_facet |
Smythe, D.K. |
author_sort |
Smythe, D.K. |
title |
Rockall Trough - Cretaceous or Late Palaeozoic? |
title_short |
Rockall Trough - Cretaceous or Late Palaeozoic? |
title_full |
Rockall Trough - Cretaceous or Late Palaeozoic? |
title_fullStr |
Rockall Trough - Cretaceous or Late Palaeozoic? |
title_full_unstemmed |
Rockall Trough - Cretaceous or Late Palaeozoic? |
title_sort |
rockall trough - cretaceous or late palaeozoic? |
publisher |
Geological Society Publishing House |
publishDate |
1989 |
url |
http://eprints.gla.ac.uk/213892/ |
long_lat |
ENVELOPE(-17.000,-17.000,57.500,57.500) ENVELOPE(-13.667,-13.667,53.333,53.333) ENVELOPE(-15.036,-15.036,53.825,53.825) |
geographic |
Hatton-Rockall Basin Norway Porcupine Bank Rockall Trough |
geographic_facet |
Hatton-Rockall Basin Norway Porcupine Bank Rockall Trough |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Smythe, D.K. <http://eprints.gla.ac.uk/view/author/5066.html> (1989) Rockall Trough - Cretaceous or Late Palaeozoic? Scottish Journal of Geology <http://eprints.gla.ac.uk/view/journal_volume/Scottish_Journal_of_Geology.html>, 25(1), pp. 5-43. (doi:10.1144/sjg25010005 <http://dx.doi.org/10.1144/sjg25010005>) |
container_title |
Scottish Journal of Geology |
container_volume |
25 |
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1 |
container_start_page |
5 |
op_container_end_page |
43 |
_version_ |
1766126683653406720 |