Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland
Shetland occupies a unique central location within the North Atlantic Caledonides. Thirty-three new high-precision Rb–Sr mineral ages indicate a polyorogenic history. Ages of 723–702 Ma obtained from the vicinity of the Wester Keolka Shear Zone indicate a Neoproterozoic (Knoydartian) age and preclud...
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Geological Society of London
2016
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ftdatacite:10.6084/m9.figshare.3454130 2023-05-15T16:03:46+02:00 Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland S. Walker M. F. Thirlwall R. A. Strachan A. F. Bird 2016 https://dx.doi.org/10.6084/m9.figshare.3454130 https://geolsoc.figshare.com/articles/dataset/Evidence_from_Rb_Sr_mineral_ages_for_multiple_orogenic_events_in_the_Caledonides_of_Shetland_Scotland/3454130 unknown Geological Society of London https://dx.doi.org/10.1144/jgs2015-034 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Geology FOS Earth and related environmental sciences dataset Dataset 2016 ftdatacite https://doi.org/10.6084/m9.figshare.3454130 https://doi.org/10.1144/jgs2015-034 2021-11-05T12:55:41Z Shetland occupies a unique central location within the North Atlantic Caledonides. Thirty-three new high-precision Rb–Sr mineral ages indicate a polyorogenic history. Ages of 723–702 Ma obtained from the vicinity of the Wester Keolka Shear Zone indicate a Neoproterozoic (Knoydartian) age and preclude its correlation with the Silurian Moine Thrust. Ordovician ages of c . 480–443 Ma obtained from the Yell Sound Group and the East Mainland Succession constrain deformation fabrics and metamorphic assemblages to have formed during Grampian accretionary orogenic events, broadly contemporaneously with orogenesis of the Dalradian Supergroup in Ireland and mainland Scotland. The relative paucity of Silurian ages is attributed to a likely location at a high structural level in the Scandian nappe pile relative to mainland Scotland. Ages of c . 416 and c . 411 Ma for the Uyea Shear Zone suggest a late orogenic evolution that has more in common with East Greenland and Norway than with northern mainland Scotland. Supplementary material: Detailed appraisal of biotite petrography is available at http://www.geolsoc.org.uk/SUP18887. Dataset East Greenland Greenland North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Greenland Norway |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geology FOS Earth and related environmental sciences |
spellingShingle |
Geology FOS Earth and related environmental sciences S. Walker M. F. Thirlwall R. A. Strachan A. F. Bird Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
Shetland occupies a unique central location within the North Atlantic Caledonides. Thirty-three new high-precision Rb–Sr mineral ages indicate a polyorogenic history. Ages of 723–702 Ma obtained from the vicinity of the Wester Keolka Shear Zone indicate a Neoproterozoic (Knoydartian) age and preclude its correlation with the Silurian Moine Thrust. Ordovician ages of c . 480–443 Ma obtained from the Yell Sound Group and the East Mainland Succession constrain deformation fabrics and metamorphic assemblages to have formed during Grampian accretionary orogenic events, broadly contemporaneously with orogenesis of the Dalradian Supergroup in Ireland and mainland Scotland. The relative paucity of Silurian ages is attributed to a likely location at a high structural level in the Scandian nappe pile relative to mainland Scotland. Ages of c . 416 and c . 411 Ma for the Uyea Shear Zone suggest a late orogenic evolution that has more in common with East Greenland and Norway than with northern mainland Scotland. Supplementary material: Detailed appraisal of biotite petrography is available at http://www.geolsoc.org.uk/SUP18887. |
format |
Dataset |
author |
S. Walker M. F. Thirlwall R. A. Strachan A. F. Bird |
author_facet |
S. Walker M. F. Thirlwall R. A. Strachan A. F. Bird |
author_sort |
S. Walker |
title |
Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland |
title_short |
Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland |
title_full |
Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland |
title_fullStr |
Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland |
title_full_unstemmed |
Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland |
title_sort |
evidence from rb–sr mineral ages for multiple orogenic events in the caledonides of shetland, scotland |
publisher |
Geological Society of London |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.3454130 https://geolsoc.figshare.com/articles/dataset/Evidence_from_Rb_Sr_mineral_ages_for_multiple_orogenic_events_in_the_Caledonides_of_Shetland_Scotland/3454130 |
geographic |
Greenland Norway |
geographic_facet |
Greenland Norway |
genre |
East Greenland Greenland North Atlantic |
genre_facet |
East Greenland Greenland North Atlantic |
op_relation |
https://dx.doi.org/10.1144/jgs2015-034 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.3454130 https://doi.org/10.1144/jgs2015-034 |
_version_ |
1766399460088217600 |