Fifty years of the Eoarchean and the case for evolving uniformitarianism
It is 50 years since the landmark paper where Black et al. (1971) presented whole-rock Pb-Pb and Rb-Sr isotopic evidence for some rocks in Greenland surviving from Earth's first billion years; the ≥ 3700 Ma Amîtsoq gneisses. This overturned ideas prevalent at that time that the young Earth was...
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2023
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/299504 2023-10-25T01:39:04+02:00 Fifty years of the Eoarchean and the case for evolving uniformitarianism Nutman, Allen P Bennett, Vickie Friend, Clark R L Polat, Ali Hoffmann, Elis Van Kranendonk, M J 2023-09-13T06:05:05Z application/pdf http://hdl.handle.net/1885/299504 https://doi.org/10.1016/j.precamres.2021.106442 https://openresearch-repository.anu.edu.au/bitstream/1885/299504/3/Nutman%20et%20al%20Precambrian%20Research%202021.106442%5b1%5d.pdf.jpg en_AU eng Elsevier http://purl.org/au-research/grants/arc/DP170100715 http://purl.org/au-research/grants/arc/DP180100103 http://purl.org/au-research/grants/arc/DP180103204 0301-9268 http://hdl.handle.net/1885/299504 doi:10.1016/j.precamres.2021.106442 https://openresearch-repository.anu.edu.au/bitstream/1885/299504/3/Nutman%20et%20al%20Precambrian%20Research%202021.106442%5b1%5d.pdf.jpg © 2021 The authors Precambrian Research Eoarchean Uniformitarianism Plate tectonics Itsaq gneiss complex Isua Journal article 2023 ftanucanberra https://doi.org/10.1016/j.precamres.2021.106442 2023-09-25T22:15:40Z It is 50 years since the landmark paper where Black et al. (1971) presented whole-rock Pb-Pb and Rb-Sr isotopic evidence for some rocks in Greenland surviving from Earth's first billion years; the ≥ 3700 Ma Amîtsoq gneisses. This overturned ideas prevalent at that time that the young Earth was far too violent for such ancient rocks to survive. In the following few years it emerged how ‘normal’ this early Earth appeared to be, with a retained hydrosphere (oceans) by 3700 Ma and ‘continental’ crust dominated by rather normal granitic sensu lato rocks. By several decades ago this led to a vision of Eoarchean lithosphere development being controlled by a geodynamic regime with definite similarities to that in the Phanerozoic, particularly with evidence for lateral lithosphere movement (mobile lid) such as exemplified by arc-like magmatism and Barrovian metamorphism (the latter requiring tectonic crustal thickening). However, the literature in recent years is increasingly emphasising model-driven non-uniformitarian stagnant lid geodynamic scenarios to explain the Eoarchean geological record. This paper reviews the broad range of field and laboratory evidence extracted from the Eoarchean geological record in Greenland. We argue that the non-uniformitarian sagduction within a stagnant lid regime interpretation does not fit Eoarchean facts. A. Polat acknowledges a Discovery Grant (RGPIN-2019-04236) provided by the Natural Sciences and Engineering Research Council (Canada). Article in Journal/Newspaper Greenland Australian National University: ANU Digital Collections Canada Greenland Amîtsoq ENVELOPE(-51.472,-51.472,64.080,64.080) Precambrian Research 367 106442 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
English |
topic |
Eoarchean Uniformitarianism Plate tectonics Itsaq gneiss complex Isua |
spellingShingle |
Eoarchean Uniformitarianism Plate tectonics Itsaq gneiss complex Isua Nutman, Allen P Bennett, Vickie Friend, Clark R L Polat, Ali Hoffmann, Elis Van Kranendonk, M J Fifty years of the Eoarchean and the case for evolving uniformitarianism |
topic_facet |
Eoarchean Uniformitarianism Plate tectonics Itsaq gneiss complex Isua |
description |
It is 50 years since the landmark paper where Black et al. (1971) presented whole-rock Pb-Pb and Rb-Sr isotopic evidence for some rocks in Greenland surviving from Earth's first billion years; the ≥ 3700 Ma Amîtsoq gneisses. This overturned ideas prevalent at that time that the young Earth was far too violent for such ancient rocks to survive. In the following few years it emerged how ‘normal’ this early Earth appeared to be, with a retained hydrosphere (oceans) by 3700 Ma and ‘continental’ crust dominated by rather normal granitic sensu lato rocks. By several decades ago this led to a vision of Eoarchean lithosphere development being controlled by a geodynamic regime with definite similarities to that in the Phanerozoic, particularly with evidence for lateral lithosphere movement (mobile lid) such as exemplified by arc-like magmatism and Barrovian metamorphism (the latter requiring tectonic crustal thickening). However, the literature in recent years is increasingly emphasising model-driven non-uniformitarian stagnant lid geodynamic scenarios to explain the Eoarchean geological record. This paper reviews the broad range of field and laboratory evidence extracted from the Eoarchean geological record in Greenland. We argue that the non-uniformitarian sagduction within a stagnant lid regime interpretation does not fit Eoarchean facts. A. Polat acknowledges a Discovery Grant (RGPIN-2019-04236) provided by the Natural Sciences and Engineering Research Council (Canada). |
format |
Article in Journal/Newspaper |
author |
Nutman, Allen P Bennett, Vickie Friend, Clark R L Polat, Ali Hoffmann, Elis Van Kranendonk, M J |
author_facet |
Nutman, Allen P Bennett, Vickie Friend, Clark R L Polat, Ali Hoffmann, Elis Van Kranendonk, M J |
author_sort |
Nutman, Allen P |
title |
Fifty years of the Eoarchean and the case for evolving uniformitarianism |
title_short |
Fifty years of the Eoarchean and the case for evolving uniformitarianism |
title_full |
Fifty years of the Eoarchean and the case for evolving uniformitarianism |
title_fullStr |
Fifty years of the Eoarchean and the case for evolving uniformitarianism |
title_full_unstemmed |
Fifty years of the Eoarchean and the case for evolving uniformitarianism |
title_sort |
fifty years of the eoarchean and the case for evolving uniformitarianism |
publisher |
Elsevier |
publishDate |
2023 |
url |
http://hdl.handle.net/1885/299504 https://doi.org/10.1016/j.precamres.2021.106442 https://openresearch-repository.anu.edu.au/bitstream/1885/299504/3/Nutman%20et%20al%20Precambrian%20Research%202021.106442%5b1%5d.pdf.jpg |
long_lat |
ENVELOPE(-51.472,-51.472,64.080,64.080) |
geographic |
Canada Greenland Amîtsoq |
geographic_facet |
Canada Greenland Amîtsoq |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Precambrian Research |
op_relation |
http://purl.org/au-research/grants/arc/DP170100715 http://purl.org/au-research/grants/arc/DP180100103 http://purl.org/au-research/grants/arc/DP180103204 0301-9268 http://hdl.handle.net/1885/299504 doi:10.1016/j.precamres.2021.106442 https://openresearch-repository.anu.edu.au/bitstream/1885/299504/3/Nutman%20et%20al%20Precambrian%20Research%202021.106442%5b1%5d.pdf.jpg |
op_rights |
© 2021 The authors |
op_doi |
https://doi.org/10.1016/j.precamres.2021.106442 |
container_title |
Precambrian Research |
container_volume |
367 |
container_start_page |
106442 |
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1780734254128300032 |