Using palaeomagnetic and isotopic data to investigate late to post-Caledonian tectonothermal processes within the Western Terrane of Svalbard
The analytical results of a total of 205 metabasic specimens from 10 palaeomagnetic sites collected from Oscar II Land in Western Spitsbergen are presented. Petrographic, structural and palaeomagnetic data all demonstrate that the pre-Caledonian ferromagnetic fabric of the metabasic rocks has been e...
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ftdatacite:10.6084/m9.figshare.c.3673924.v1 2023-05-15T17:33:55+02:00 Using palaeomagnetic and isotopic data to investigate late to post-Caledonian tectonothermal processes within the Western Terrane of Svalbard Michalski, Krzysztof Manby, Geoffrey Nejbert, Krzysztof Domańska-Siuda, Justyna Burzyński, Mariusz 2017 https://dx.doi.org/10.6084/m9.figshare.c.3673924.v1 https://figshare.com/collections/Using_palaeomagnetic_and_isotopic_data_to_investigate_late_to_post-Caledonian_tectonothermal_processes_within_the_Western_Terrane_of_Svalbard/3673924/1 unknown Figshare https://dx.doi.org/10.1144/jgs2016-037 https://dx.doi.org/10.6084/m9.figshare.c.3673924 CC BY https://creativecommons.org/licenses/by/4.0 CC-BY Geology FOS Earth and related environmental sciences Collection article 2017 ftdatacite https://doi.org/10.6084/m9.figshare.c.3673924.v1 https://doi.org/10.1144/jgs2016-037 https://doi.org/10.6084/m9.figshare.c.3673924 2021-11-05T12:55:41Z The analytical results of a total of 205 metabasic specimens from 10 palaeomagnetic sites collected from Oscar II Land in Western Spitsbergen are presented. Petrographic, structural and palaeomagnetic data all demonstrate that the pre-Caledonian ferromagnetic fabric of the metabasic rocks has been extensively reoriented and intensively remineralized. New in situ laser ablation inductively coupled plasma mass spectrometry 40 Ar/ 39 Ar age determinations suggest that the host rocks have been subject to three resetting events during the 426 – 380 Ma (Caledonian sensu lato ), 377 – 326 Ma and c . 300 Ma intervals. The latter two resetting events coincide in time with the Barents Shelf-wide rift-controlled subsidence events. The derived palaeomagnetic data do not fall on the expected apparent polar wander path of Laurussia for syn- to post-Caledonian time. Consequently, four models invoking palaeogeographical great and small circle rotations, regional tectonism involving thrusting and normal listric faulting have been investigated to account for this lack of correspondence. The palaeomagnetic data do not lend support to reconstructions linking Western Svalbard with Pearya but point instead to the importance of listric faulting related to the opening of the North Atlantic Ocean that modified the geometry of the West Spitsbergen Fold and Thrust Belt. Article in Journal/Newspaper North Atlantic Oscar II Land Svalbard Spitsbergen DataCite Metadata Store (German National Library of Science and Technology) Oscar II ENVELOPE(-62.500,-62.500,-65.750,-65.750) Oscar II Land ENVELOPE(13.299,13.299,78.441,78.441) Svalbard |
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 Michalski, Krzysztof Manby, Geoffrey Nejbert, Krzysztof Domańska-Siuda, Justyna Burzyński, Mariusz Using palaeomagnetic and isotopic data to investigate late to post-Caledonian tectonothermal processes within the Western Terrane of Svalbard |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
The analytical results of a total of 205 metabasic specimens from 10 palaeomagnetic sites collected from Oscar II Land in Western Spitsbergen are presented. Petrographic, structural and palaeomagnetic data all demonstrate that the pre-Caledonian ferromagnetic fabric of the metabasic rocks has been extensively reoriented and intensively remineralized. New in situ laser ablation inductively coupled plasma mass spectrometry 40 Ar/ 39 Ar age determinations suggest that the host rocks have been subject to three resetting events during the 426 – 380 Ma (Caledonian sensu lato ), 377 – 326 Ma and c . 300 Ma intervals. The latter two resetting events coincide in time with the Barents Shelf-wide rift-controlled subsidence events. The derived palaeomagnetic data do not fall on the expected apparent polar wander path of Laurussia for syn- to post-Caledonian time. Consequently, four models invoking palaeogeographical great and small circle rotations, regional tectonism involving thrusting and normal listric faulting have been investigated to account for this lack of correspondence. The palaeomagnetic data do not lend support to reconstructions linking Western Svalbard with Pearya but point instead to the importance of listric faulting related to the opening of the North Atlantic Ocean that modified the geometry of the West Spitsbergen Fold and Thrust Belt. |
format |
Article in Journal/Newspaper |
author |
Michalski, Krzysztof Manby, Geoffrey Nejbert, Krzysztof Domańska-Siuda, Justyna Burzyński, Mariusz |
author_facet |
Michalski, Krzysztof Manby, Geoffrey Nejbert, Krzysztof Domańska-Siuda, Justyna Burzyński, Mariusz |
author_sort |
Michalski, Krzysztof |
title |
Using palaeomagnetic and isotopic data to investigate late to post-Caledonian tectonothermal processes within the Western Terrane of Svalbard |
title_short |
Using palaeomagnetic and isotopic data to investigate late to post-Caledonian tectonothermal processes within the Western Terrane of Svalbard |
title_full |
Using palaeomagnetic and isotopic data to investigate late to post-Caledonian tectonothermal processes within the Western Terrane of Svalbard |
title_fullStr |
Using palaeomagnetic and isotopic data to investigate late to post-Caledonian tectonothermal processes within the Western Terrane of Svalbard |
title_full_unstemmed |
Using palaeomagnetic and isotopic data to investigate late to post-Caledonian tectonothermal processes within the Western Terrane of Svalbard |
title_sort |
using palaeomagnetic and isotopic data to investigate late to post-caledonian tectonothermal processes within the western terrane of svalbard |
publisher |
Figshare |
publishDate |
2017 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3673924.v1 https://figshare.com/collections/Using_palaeomagnetic_and_isotopic_data_to_investigate_late_to_post-Caledonian_tectonothermal_processes_within_the_Western_Terrane_of_Svalbard/3673924/1 |
long_lat |
ENVELOPE(-62.500,-62.500,-65.750,-65.750) ENVELOPE(13.299,13.299,78.441,78.441) |
geographic |
Oscar II Oscar II Land Svalbard |
geographic_facet |
Oscar II Oscar II Land Svalbard |
genre |
North Atlantic Oscar II Land Svalbard Spitsbergen |
genre_facet |
North Atlantic Oscar II Land Svalbard Spitsbergen |
op_relation |
https://dx.doi.org/10.1144/jgs2016-037 https://dx.doi.org/10.6084/m9.figshare.c.3673924 |
op_rights |
CC BY https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3673924.v1 https://doi.org/10.1144/jgs2016-037 https://doi.org/10.6084/m9.figshare.c.3673924 |
_version_ |
1766132577506164736 |