Comment on “Tectonics of the Isua Supracrustal Belt 1: P-T-X-d Constraints of a Poly-Metamorphic Terrane” by A. Ramírez-Salazar et al. and “Tectonics of the Isua Supracrustal Belt 2: Microstructures Reveal Distributed Strain in the Absence of Major Fault Structures” by J. Zuo et al.
The two Isua supracrustal belt area (Greenland) papers by Zuo et al. (2021, https://doi.org/10.1029/2020tc006514) and Ramírez-Salazar et al. (2021, https://doi.org/10.1029/2020TC006516) contain no evidence supporting an Eoarchean “heat-pipe” geodynamic regime and yet no evidence negating a mobile li...
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ftunivwollongong:oai:ro.uow.edu.au:test2021-10751 2023-05-15T13:21:42+02:00 Comment on “Tectonics of the Isua Supracrustal Belt 1: P-T-X-d Constraints of a Poly-Metamorphic Terrane” by A. Ramírez-Salazar et al. and “Tectonics of the Isua Supracrustal Belt 2: Microstructures Reveal Distributed Strain in the Absence of Major Fault Structures” by J. Zuo et al. Nutman, A. P. Friend, C. R.L. Bennett, V. C. 2022-05-01T07:00:00Z https://ro.uow.edu.au/test2021/5204 https://doi.org/10.1029/2021TC007036 unknown Research Online https://ro.uow.edu.au/test2021/5204 https://doi.org/10.1029/2021TC007036 Test Series for Scopus Harvesting 2021 Eoarchean heat pipe regime Isua supracrustal belt mobile lid regime quartz microfabrics ultra high pressure metamorphism text 2022 ftunivwollongong https://doi.org/10.1029/2021TC007036 2022-07-04T22:23:41Z The two Isua supracrustal belt area (Greenland) papers by Zuo et al. (2021, https://doi.org/10.1029/2020tc006514) and Ramírez-Salazar et al. (2021, https://doi.org/10.1029/2020TC006516) contain no evidence supporting an Eoarchean “heat-pipe” geodynamic regime and yet no evidence negating a mobile lid one. From quartz micro-fabric studies, Zuo et al. (2021, https://doi.org/10.1029/2020tc006514) argued for Eoarchean “relatively equal strain distributed across the belt.” This contradicts clear meso- and macro-scale evidence for strongly heterogeneous Eoarchean deformation before the later deformed and metamorphosed ∼3,500 to 2,750 Ma Ameralik dykes were intruded. The Zuo et al. strain indicators relate to syn-amphibolite facies Neoarchean basin and dome formation throughout the ∼250 km extent of the Eoarchean gneiss complex. Ramírez-Salazar et al. (2021, https://doi.org/10.1029/2020TC006516) argued the Isua area's metamorphic signature reflects a uniform Eoarchan “heat-pipe” geodynamic regime. However, observed Eoarchean tectonothermal conditions are more diverse, including ultra-high-pressure relicts in peridotite lenses with supra-subduction zone attributes, and are incompatible with a “heat-pipe” regime. Text Ameralik Greenland University of Wollongong, Australia: Research Online Ameralik ENVELOPE(-51.000,-51.000,64.117,64.117) Greenland Tectonics 41 5 |
institution |
Open Polar |
collection |
University of Wollongong, Australia: Research Online |
op_collection_id |
ftunivwollongong |
language |
unknown |
topic |
Eoarchean heat pipe regime Isua supracrustal belt mobile lid regime quartz microfabrics ultra high pressure metamorphism |
spellingShingle |
Eoarchean heat pipe regime Isua supracrustal belt mobile lid regime quartz microfabrics ultra high pressure metamorphism Nutman, A. P. Friend, C. R.L. Bennett, V. C. Comment on “Tectonics of the Isua Supracrustal Belt 1: P-T-X-d Constraints of a Poly-Metamorphic Terrane” by A. Ramírez-Salazar et al. and “Tectonics of the Isua Supracrustal Belt 2: Microstructures Reveal Distributed Strain in the Absence of Major Fault Structures” by J. Zuo et al. |
topic_facet |
Eoarchean heat pipe regime Isua supracrustal belt mobile lid regime quartz microfabrics ultra high pressure metamorphism |
description |
The two Isua supracrustal belt area (Greenland) papers by Zuo et al. (2021, https://doi.org/10.1029/2020tc006514) and Ramírez-Salazar et al. (2021, https://doi.org/10.1029/2020TC006516) contain no evidence supporting an Eoarchean “heat-pipe” geodynamic regime and yet no evidence negating a mobile lid one. From quartz micro-fabric studies, Zuo et al. (2021, https://doi.org/10.1029/2020tc006514) argued for Eoarchean “relatively equal strain distributed across the belt.” This contradicts clear meso- and macro-scale evidence for strongly heterogeneous Eoarchean deformation before the later deformed and metamorphosed ∼3,500 to 2,750 Ma Ameralik dykes were intruded. The Zuo et al. strain indicators relate to syn-amphibolite facies Neoarchean basin and dome formation throughout the ∼250 km extent of the Eoarchean gneiss complex. Ramírez-Salazar et al. (2021, https://doi.org/10.1029/2020TC006516) argued the Isua area's metamorphic signature reflects a uniform Eoarchan “heat-pipe” geodynamic regime. However, observed Eoarchean tectonothermal conditions are more diverse, including ultra-high-pressure relicts in peridotite lenses with supra-subduction zone attributes, and are incompatible with a “heat-pipe” regime. |
format |
Text |
author |
Nutman, A. P. Friend, C. R.L. Bennett, V. C. |
author_facet |
Nutman, A. P. Friend, C. R.L. Bennett, V. C. |
author_sort |
Nutman, A. P. |
title |
Comment on “Tectonics of the Isua Supracrustal Belt 1: P-T-X-d Constraints of a Poly-Metamorphic Terrane” by A. Ramírez-Salazar et al. and “Tectonics of the Isua Supracrustal Belt 2: Microstructures Reveal Distributed Strain in the Absence of Major Fault Structures” by J. Zuo et al. |
title_short |
Comment on “Tectonics of the Isua Supracrustal Belt 1: P-T-X-d Constraints of a Poly-Metamorphic Terrane” by A. Ramírez-Salazar et al. and “Tectonics of the Isua Supracrustal Belt 2: Microstructures Reveal Distributed Strain in the Absence of Major Fault Structures” by J. Zuo et al. |
title_full |
Comment on “Tectonics of the Isua Supracrustal Belt 1: P-T-X-d Constraints of a Poly-Metamorphic Terrane” by A. Ramírez-Salazar et al. and “Tectonics of the Isua Supracrustal Belt 2: Microstructures Reveal Distributed Strain in the Absence of Major Fault Structures” by J. Zuo et al. |
title_fullStr |
Comment on “Tectonics of the Isua Supracrustal Belt 1: P-T-X-d Constraints of a Poly-Metamorphic Terrane” by A. Ramírez-Salazar et al. and “Tectonics of the Isua Supracrustal Belt 2: Microstructures Reveal Distributed Strain in the Absence of Major Fault Structures” by J. Zuo et al. |
title_full_unstemmed |
Comment on “Tectonics of the Isua Supracrustal Belt 1: P-T-X-d Constraints of a Poly-Metamorphic Terrane” by A. Ramírez-Salazar et al. and “Tectonics of the Isua Supracrustal Belt 2: Microstructures Reveal Distributed Strain in the Absence of Major Fault Structures” by J. Zuo et al. |
title_sort |
comment on “tectonics of the isua supracrustal belt 1: p-t-x-d constraints of a poly-metamorphic terrane” by a. ramírez-salazar et al. and “tectonics of the isua supracrustal belt 2: microstructures reveal distributed strain in the absence of major fault structures” by j. zuo et al. |
publisher |
Research Online |
publishDate |
2022 |
url |
https://ro.uow.edu.au/test2021/5204 https://doi.org/10.1029/2021TC007036 |
long_lat |
ENVELOPE(-51.000,-51.000,64.117,64.117) |
geographic |
Ameralik Greenland |
geographic_facet |
Ameralik Greenland |
genre |
Ameralik Greenland |
genre_facet |
Ameralik Greenland |
op_source |
Test Series for Scopus Harvesting 2021 |
op_relation |
https://ro.uow.edu.au/test2021/5204 https://doi.org/10.1029/2021TC007036 |
op_doi |
https://doi.org/10.1029/2021TC007036 |
container_title |
Tectonics |
container_volume |
41 |
container_issue |
5 |
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1766360997451268096 |