Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway
This is the peer reviewed version of the following article: Fournier, H. W., Lee, J. K. W., & Camacho, A. (2019). Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway. Journal of Metamorphic Geology. doi:10.1111/jmg.12485, which...
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Online Access: | http://hdl.handle.net/1974/26295 https://doi.org/10.1111/jmg.12485 |
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ftqueensuniv:oai:https://qspace.library.queensu.ca:1974/26295 2024-06-02T08:10:04+00:00 Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway Fournier, Herbert W. Lee, James K. W. Camacho, Alfredo 2019-06-07T15:39:01Z application/pdf http://hdl.handle.net/1974/26295 https://doi.org/10.1111/jmg.12485 unknown Wiley Fournier, H. W., Lee, J. K. W., & Camacho, A. (2019). Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway. Journal of Metamorphic Geology. doi:10.1111/jmg.12485 https://dx.doi.org/10.1111/jmg.12485 http://hdl.handle.net/1974/26295 Ar isotopes Caledonian orogeny Leknes Group muscovite thermal modelling short-lived fluid migration journal article 2019 ftqueensuniv https://doi.org/10.1111/jmg.12485 2024-05-06T10:47:33Z This is the peer reviewed version of the following article: Fournier, H. W., Lee, J. K. W., & Camacho, A. (2019). Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway. Journal of Metamorphic Geology. doi:10.1111/jmg.12485, which has been published in final form at http://dx.doi.org/10.1111/jmg.12485. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. The determination of the thermal (temperature–time) histories of high-P metamorphic terranes has been commonly based on the concepts of slow cooling and closure temperatures. In this paper, we find that this approach cannot reconcile a geochronological data set obtained from the amphibolite-facies allochthonous Leknes Group of the Lofoten islands, Norway, which reveals an extremely complex thermal history. Using detailed results from several different geochronometers such as 40Ar/39Ar, Rb–Sr and U–Pb, we show that a model invoking multiple, short-lived thermal pulses related to hot-fluid infiltration channelized by shear zones can reconcile this complicated data set. This model suggests that hot fluids infiltrated throughout basement shear zones and affected the overlying cold allochthon, partially resetting U/Pb rutile and titanite ages, crystallizing new zircon and produced identical 40Ar/39Ar and Rb/Sr ages in muscovite, biotite and amphibole in various rocks throughout the region. This paper shows the enormous potential of coupling laser Ar-spot data with thermal modelling to identify and constrain the duration of short-lived events. An optimal P–T–t history has been derived by modelling the age data from a previously dated large muscovite crystal (Hames & Andresen, 1996, Geology, 24:1005) and using Zr-in-rutile thermometry which is consistent with all geochronological data and geological constraints from the basement zones and allochthon cover. This tectonothermal model history suggests that there have ... Article in Journal/Newspaper Leknes Lofoten Vestvågøy Queen's University, Ontario: QSpace Lofoten Norway Fournier ENVELOPE(-63.150,-63.150,-64.533,-64.533) Vestvågøy ENVELOPE(13.611,13.611,68.148,68.148) Andresen ENVELOPE(-66.733,-66.733,-66.983,-66.983) Journal of Metamorphic Geology 37 6 769 793 |
institution |
Open Polar |
collection |
Queen's University, Ontario: QSpace |
op_collection_id |
ftqueensuniv |
language |
unknown |
topic |
Ar isotopes Caledonian orogeny Leknes Group muscovite thermal modelling short-lived fluid migration |
spellingShingle |
Ar isotopes Caledonian orogeny Leknes Group muscovite thermal modelling short-lived fluid migration Fournier, Herbert W. Lee, James K. W. Camacho, Alfredo Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway |
topic_facet |
Ar isotopes Caledonian orogeny Leknes Group muscovite thermal modelling short-lived fluid migration |
description |
This is the peer reviewed version of the following article: Fournier, H. W., Lee, J. K. W., & Camacho, A. (2019). Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway. Journal of Metamorphic Geology. doi:10.1111/jmg.12485, which has been published in final form at http://dx.doi.org/10.1111/jmg.12485. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. The determination of the thermal (temperature–time) histories of high-P metamorphic terranes has been commonly based on the concepts of slow cooling and closure temperatures. In this paper, we find that this approach cannot reconcile a geochronological data set obtained from the amphibolite-facies allochthonous Leknes Group of the Lofoten islands, Norway, which reveals an extremely complex thermal history. Using detailed results from several different geochronometers such as 40Ar/39Ar, Rb–Sr and U–Pb, we show that a model invoking multiple, short-lived thermal pulses related to hot-fluid infiltration channelized by shear zones can reconcile this complicated data set. This model suggests that hot fluids infiltrated throughout basement shear zones and affected the overlying cold allochthon, partially resetting U/Pb rutile and titanite ages, crystallizing new zircon and produced identical 40Ar/39Ar and Rb/Sr ages in muscovite, biotite and amphibole in various rocks throughout the region. This paper shows the enormous potential of coupling laser Ar-spot data with thermal modelling to identify and constrain the duration of short-lived events. An optimal P–T–t history has been derived by modelling the age data from a previously dated large muscovite crystal (Hames & Andresen, 1996, Geology, 24:1005) and using Zr-in-rutile thermometry which is consistent with all geochronological data and geological constraints from the basement zones and allochthon cover. This tectonothermal model history suggests that there have ... |
format |
Article in Journal/Newspaper |
author |
Fournier, Herbert W. Lee, James K. W. Camacho, Alfredo |
author_facet |
Fournier, Herbert W. Lee, James K. W. Camacho, Alfredo |
author_sort |
Fournier, Herbert W. |
title |
Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway |
title_short |
Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway |
title_full |
Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway |
title_fullStr |
Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway |
title_full_unstemmed |
Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway |
title_sort |
slow cooling versus episodic fluid injections: deciphering the caledonian orogeny in vestvågøy, lofoten islands, norway |
publisher |
Wiley |
publishDate |
2019 |
url |
http://hdl.handle.net/1974/26295 https://doi.org/10.1111/jmg.12485 |
long_lat |
ENVELOPE(-63.150,-63.150,-64.533,-64.533) ENVELOPE(13.611,13.611,68.148,68.148) ENVELOPE(-66.733,-66.733,-66.983,-66.983) |
geographic |
Lofoten Norway Fournier Vestvågøy Andresen |
geographic_facet |
Lofoten Norway Fournier Vestvågøy Andresen |
genre |
Leknes Lofoten Vestvågøy |
genre_facet |
Leknes Lofoten Vestvågøy |
op_relation |
Fournier, H. W., Lee, J. K. W., & Camacho, A. (2019). Slow cooling versus episodic fluid injections: Deciphering the Caledonian orogeny in Vestvågøy, Lofoten islands, Norway. Journal of Metamorphic Geology. doi:10.1111/jmg.12485 https://dx.doi.org/10.1111/jmg.12485 http://hdl.handle.net/1974/26295 |
op_doi |
https://doi.org/10.1111/jmg.12485 |
container_title |
Journal of Metamorphic Geology |
container_volume |
37 |
container_issue |
6 |
container_start_page |
769 |
op_container_end_page |
793 |
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1800755866128875520 |