Metamorphic evolution of the Great Slave Lake shear zone ...
AbstractThe Palaeoproterozoic Great Slave Lake shear zone (GSLsz) is a crustal‐scale strike‐slip structure, with a total length of >1,000 km and a width of ~25 km, that separates the Archean Rae and Slave cratons. The range of metamorphic rocks now exposed at the surface encompasses granulite fac...
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ftdatacite:10.17863/cam.58825 2024-02-04T10:00:38+01:00 Metamorphic evolution of the Great Slave Lake shear zone ... Dyck, B Goddard, RM Wallis, D Hansen, LN Martel, E 2021 https://dx.doi.org/10.17863/cam.58825 https://www.repository.cam.ac.uk/handle/1810/311735 en eng Wiley open.access All rights reserved http://purl.org/coar/access_right/c_abf2 mylonite phase equilibria modelling shear zone thermometry Article ScholarlyArticle JournalArticle article-journal 2021 ftdatacite https://doi.org/10.17863/cam.58825 2024-01-05T15:09:43Z AbstractThe Palaeoproterozoic Great Slave Lake shear zone (GSLsz) is a crustal‐scale strike‐slip structure, with a total length of >1,000 km and a width of ~25 km, that separates the Archean Rae and Slave cratons. The range of metamorphic rocks now exposed at the surface encompasses granulite facies mylonite through to lower‐greenschist facies ultramylonite and cataclasite, providing a potential type example of fault‐zone structure in the middle and lower crust. However, the metamorphic evolution of the units remains poorly quantified, hindering detailed structural and tectonic interpretations. Here, we use phase equilibria modelling and thermobarometry to determine the metamorphic conditions recorded by pelitic, mafic and felsic GSLsz mylonites. Samples from the entire range of granulite–greenschist facies units preserve evidence for nested clockwise pressure–temperature paths that are consistent with a single orogenic cycle. Our findings indicate that the northern Rae margin underwent pervasive crustal ... Article in Journal/Newspaper Great Slave Lake DataCite Metadata Store (German National Library of Science and Technology) Great Slave Lake ENVELOPE(-114.001,-114.001,61.500,61.500) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
mylonite phase equilibria modelling shear zone thermometry |
spellingShingle |
mylonite phase equilibria modelling shear zone thermometry Dyck, B Goddard, RM Wallis, D Hansen, LN Martel, E Metamorphic evolution of the Great Slave Lake shear zone ... |
topic_facet |
mylonite phase equilibria modelling shear zone thermometry |
description |
AbstractThe Palaeoproterozoic Great Slave Lake shear zone (GSLsz) is a crustal‐scale strike‐slip structure, with a total length of >1,000 km and a width of ~25 km, that separates the Archean Rae and Slave cratons. The range of metamorphic rocks now exposed at the surface encompasses granulite facies mylonite through to lower‐greenschist facies ultramylonite and cataclasite, providing a potential type example of fault‐zone structure in the middle and lower crust. However, the metamorphic evolution of the units remains poorly quantified, hindering detailed structural and tectonic interpretations. Here, we use phase equilibria modelling and thermobarometry to determine the metamorphic conditions recorded by pelitic, mafic and felsic GSLsz mylonites. Samples from the entire range of granulite–greenschist facies units preserve evidence for nested clockwise pressure–temperature paths that are consistent with a single orogenic cycle. Our findings indicate that the northern Rae margin underwent pervasive crustal ... |
format |
Article in Journal/Newspaper |
author |
Dyck, B Goddard, RM Wallis, D Hansen, LN Martel, E |
author_facet |
Dyck, B Goddard, RM Wallis, D Hansen, LN Martel, E |
author_sort |
Dyck, B |
title |
Metamorphic evolution of the Great Slave Lake shear zone ... |
title_short |
Metamorphic evolution of the Great Slave Lake shear zone ... |
title_full |
Metamorphic evolution of the Great Slave Lake shear zone ... |
title_fullStr |
Metamorphic evolution of the Great Slave Lake shear zone ... |
title_full_unstemmed |
Metamorphic evolution of the Great Slave Lake shear zone ... |
title_sort |
metamorphic evolution of the great slave lake shear zone ... |
publisher |
Wiley |
publishDate |
2021 |
url |
https://dx.doi.org/10.17863/cam.58825 https://www.repository.cam.ac.uk/handle/1810/311735 |
long_lat |
ENVELOPE(-114.001,-114.001,61.500,61.500) |
geographic |
Great Slave Lake |
geographic_facet |
Great Slave Lake |
genre |
Great Slave Lake |
genre_facet |
Great Slave Lake |
op_rights |
open.access All rights reserved http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.17863/cam.58825 |
_version_ |
1789966024322318336 |