Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland
The Cenozoic tectonic history of NW Europe is generally attributed to some combination of three principal controlling factors: North Atlantic opening, Alpine collision and formation of the Icelandic mantle plume. Using constraints from the high-resolution Tellus aeromagnetic survey of Northern Irela...
Published in: | Journal of the Geological Society |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Geological Society of London
2012
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/16421/ https://nora.nerc.ac.uk/id/eprint/16421/1/Cooperetal_Tellusdykes_JGS_accepted_version_text_only.pdf |
id |
ftnerc:oai:nora.nerc.ac.uk:16421 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:16421 2023-05-15T17:32:45+02:00 Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland Cooper, M.R. Anderson, H. Walsh, J.J. Van Dam, C.L. Young, M.E. Earls, G. Walker, A. 2012 text http://nora.nerc.ac.uk/id/eprint/16421/ https://nora.nerc.ac.uk/id/eprint/16421/1/Cooperetal_Tellusdykes_JGS_accepted_version_text_only.pdf en eng Geological Society of London https://nora.nerc.ac.uk/id/eprint/16421/1/Cooperetal_Tellusdykes_JGS_accepted_version_text_only.pdf Cooper, M.R.; Anderson, H.; Walsh, J.J.; Van Dam, C.L.; Young, M.E.; Earls, G.; Walker, A. 2012 Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland. Journal of the Geological Society, 169 (1). 29-36. https://doi.org/10.1144/0016-76492010-182 <https://doi.org/10.1144/0016-76492010-182> Publication - Article PeerReviewed 2012 ftnerc https://doi.org/10.1144/0016-76492010-182 2023-02-04T19:30:31Z The Cenozoic tectonic history of NW Europe is generally attributed to some combination of three principal controlling factors: North Atlantic opening, Alpine collision and formation of the Icelandic mantle plume. Using constraints from the high-resolution Tellus aeromagnetic survey of Northern Ireland, we show that Palaeogene tectonics can be attributed to approximately north–south Alpine-related compression, forming NNW–SSE-trending dextral and ENE–WSW-trending sinistral conjugate strike-slip faults, with the latter defined by kilometre-scale displacements along reactivated Caledonian or Carboniferous faults. This tectonism was, however, punctuated by pulsed magmatic intrusive and extrusive events, including four distinct dyke swarms that are attributed to NE–SW- to east–west-directed plume-related extension. Although this evidence shows, for the first time, that north–south Alpine compression was periodically overwhelmed by the dynamic stresses and uplift associated with pulsed mantle plume-related deformation, associated strike-slip faulting may have controlled the locus of volcanic activity and central igneous complexes, and the location of sedimentary depocentres. Article in Journal/Newspaper North Atlantic Natural Environment Research Council: NERC Open Research Archive Journal of the Geological Society 169 1 29 36 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The Cenozoic tectonic history of NW Europe is generally attributed to some combination of three principal controlling factors: North Atlantic opening, Alpine collision and formation of the Icelandic mantle plume. Using constraints from the high-resolution Tellus aeromagnetic survey of Northern Ireland, we show that Palaeogene tectonics can be attributed to approximately north–south Alpine-related compression, forming NNW–SSE-trending dextral and ENE–WSW-trending sinistral conjugate strike-slip faults, with the latter defined by kilometre-scale displacements along reactivated Caledonian or Carboniferous faults. This tectonism was, however, punctuated by pulsed magmatic intrusive and extrusive events, including four distinct dyke swarms that are attributed to NE–SW- to east–west-directed plume-related extension. Although this evidence shows, for the first time, that north–south Alpine compression was periodically overwhelmed by the dynamic stresses and uplift associated with pulsed mantle plume-related deformation, associated strike-slip faulting may have controlled the locus of volcanic activity and central igneous complexes, and the location of sedimentary depocentres. |
format |
Article in Journal/Newspaper |
author |
Cooper, M.R. Anderson, H. Walsh, J.J. Van Dam, C.L. Young, M.E. Earls, G. Walker, A. |
spellingShingle |
Cooper, M.R. Anderson, H. Walsh, J.J. Van Dam, C.L. Young, M.E. Earls, G. Walker, A. Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland |
author_facet |
Cooper, M.R. Anderson, H. Walsh, J.J. Van Dam, C.L. Young, M.E. Earls, G. Walker, A. |
author_sort |
Cooper, M.R. |
title |
Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland |
title_short |
Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland |
title_full |
Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland |
title_fullStr |
Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland |
title_full_unstemmed |
Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland |
title_sort |
palaeogene alpine tectonics and icelandic plume-related magmatism and deformation in northern ireland |
publisher |
Geological Society of London |
publishDate |
2012 |
url |
http://nora.nerc.ac.uk/id/eprint/16421/ https://nora.nerc.ac.uk/id/eprint/16421/1/Cooperetal_Tellusdykes_JGS_accepted_version_text_only.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/16421/1/Cooperetal_Tellusdykes_JGS_accepted_version_text_only.pdf Cooper, M.R.; Anderson, H.; Walsh, J.J.; Van Dam, C.L.; Young, M.E.; Earls, G.; Walker, A. 2012 Palaeogene Alpine tectonics and Icelandic plume-related magmatism and deformation in Northern Ireland. Journal of the Geological Society, 169 (1). 29-36. https://doi.org/10.1144/0016-76492010-182 <https://doi.org/10.1144/0016-76492010-182> |
op_doi |
https://doi.org/10.1144/0016-76492010-182 |
container_title |
Journal of the Geological Society |
container_volume |
169 |
container_issue |
1 |
container_start_page |
29 |
op_container_end_page |
36 |
_version_ |
1766131018052403200 |