Reply to Dewey and Ryan Comment on Searle, MP (2021) ‘Tectonic evolution of the Caledonian orogeny in Scotland: a review based on the timing of magmatism, metamorphism and deformation’
Abstract I welcome the comment from Dewey and Ryan on my paper (Searle, 2021), and the chance to clarify some conflicting Caledonian tectonic models and new ideas. As outlined in the paper, my review was based on the geology of Scotland, not Ireland, Newfoundland or the rest of the Caledonian orogen...
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crcambridgeupr:10.1017/s0016756822000838 2024-03-03T08:45:02+00:00 Reply to Dewey and Ryan Comment on Searle, MP (2021) ‘Tectonic evolution of the Caledonian orogeny in Scotland: a review based on the timing of magmatism, metamorphism and deformation’ Searle, Michael P. 2022 http://dx.doi.org/10.1017/s0016756822000838 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756822000838 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 159, issue 10, page 1837-1845 ISSN 0016-7568 1469-5081 Geology journal-article 2022 crcambridgeupr https://doi.org/10.1017/s0016756822000838 2024-02-08T08:28:01Z Abstract I welcome the comment from Dewey and Ryan on my paper (Searle, 2021), and the chance to clarify some conflicting Caledonian tectonic models and new ideas. As outlined in the paper, my review was based on the geology of Scotland, not Ireland, Newfoundland or the rest of the Caledonian orogeny beyond, mainly because of length constraints, and the fact that my personal field experience lies mainly in Scotland. The Great Glen fault and the Moine Supergroup are not exposed at all in Ireland, so critical parts, and half of the Caledonian orogeny are missing in Ireland. I argue that the Caledonian geology of Scotland can be explained by a Laurentia – Midland valley arc-microcontinent collision, progressing from NW-directed ophiolite obduction in the Late Cambrian to crustal thickening and regional metamorphism during the Ordovician and Silurian, across the Dalradian and Moine metamorphic rocks. Caledonian structures do continue north into Greenland, as summarized by Leslie et al. (2008), but the geological evolution of the Scottish Caledonides does not require any collision with Baltica. The Dewey and Ryan comment raises major tectonic questions, which this reply addresses. Article in Journal/Newspaper Greenland Newfoundland Cambridge University Press Greenland Dewey ENVELOPE(-64.320,-64.320,-65.907,-65.907) Midland ENVELOPE(8.224,8.224,63.072,63.072) Searle ENVELOPE(-67.237,-67.237,-67.813,-67.813) Geological Magazine 1 9 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology |
spellingShingle |
Geology Searle, Michael P. Reply to Dewey and Ryan Comment on Searle, MP (2021) ‘Tectonic evolution of the Caledonian orogeny in Scotland: a review based on the timing of magmatism, metamorphism and deformation’ |
topic_facet |
Geology |
description |
Abstract I welcome the comment from Dewey and Ryan on my paper (Searle, 2021), and the chance to clarify some conflicting Caledonian tectonic models and new ideas. As outlined in the paper, my review was based on the geology of Scotland, not Ireland, Newfoundland or the rest of the Caledonian orogeny beyond, mainly because of length constraints, and the fact that my personal field experience lies mainly in Scotland. The Great Glen fault and the Moine Supergroup are not exposed at all in Ireland, so critical parts, and half of the Caledonian orogeny are missing in Ireland. I argue that the Caledonian geology of Scotland can be explained by a Laurentia – Midland valley arc-microcontinent collision, progressing from NW-directed ophiolite obduction in the Late Cambrian to crustal thickening and regional metamorphism during the Ordovician and Silurian, across the Dalradian and Moine metamorphic rocks. Caledonian structures do continue north into Greenland, as summarized by Leslie et al. (2008), but the geological evolution of the Scottish Caledonides does not require any collision with Baltica. The Dewey and Ryan comment raises major tectonic questions, which this reply addresses. |
format |
Article in Journal/Newspaper |
author |
Searle, Michael P. |
author_facet |
Searle, Michael P. |
author_sort |
Searle, Michael P. |
title |
Reply to Dewey and Ryan Comment on Searle, MP (2021) ‘Tectonic evolution of the Caledonian orogeny in Scotland: a review based on the timing of magmatism, metamorphism and deformation’ |
title_short |
Reply to Dewey and Ryan Comment on Searle, MP (2021) ‘Tectonic evolution of the Caledonian orogeny in Scotland: a review based on the timing of magmatism, metamorphism and deformation’ |
title_full |
Reply to Dewey and Ryan Comment on Searle, MP (2021) ‘Tectonic evolution of the Caledonian orogeny in Scotland: a review based on the timing of magmatism, metamorphism and deformation’ |
title_fullStr |
Reply to Dewey and Ryan Comment on Searle, MP (2021) ‘Tectonic evolution of the Caledonian orogeny in Scotland: a review based on the timing of magmatism, metamorphism and deformation’ |
title_full_unstemmed |
Reply to Dewey and Ryan Comment on Searle, MP (2021) ‘Tectonic evolution of the Caledonian orogeny in Scotland: a review based on the timing of magmatism, metamorphism and deformation’ |
title_sort |
reply to dewey and ryan comment on searle, mp (2021) ‘tectonic evolution of the caledonian orogeny in scotland: a review based on the timing of magmatism, metamorphism and deformation’ |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/s0016756822000838 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756822000838 |
long_lat |
ENVELOPE(-64.320,-64.320,-65.907,-65.907) ENVELOPE(8.224,8.224,63.072,63.072) ENVELOPE(-67.237,-67.237,-67.813,-67.813) |
geographic |
Greenland Dewey Midland Searle |
geographic_facet |
Greenland Dewey Midland Searle |
genre |
Greenland Newfoundland |
genre_facet |
Greenland Newfoundland |
op_source |
Geological Magazine volume 159, issue 10, page 1837-1845 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0016756822000838 |
container_title |
Geological Magazine |
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1 |
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9 |
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