Archean greenstone belt in southwestern Greenland
The Isua Greenstone Belt is an Archean greenstone belt in southwestern Greenland , aged between 3.7 and 3.8 billion years.[ 2] The belt contains variably metamorphosed mafic volcanic and sedimentary rocks , and is the largest exposure of Eoarchaean supracrustal rocks on Earth.[ 3] Due to its age and low metamorphic grade [ 4] relative to many Eoarchaean rocks, the Isua Greenstone Belt has become a focus for investigations on the emergence of life[ 5] [ 6] and the style of tectonics that operated on the early Earth.[ 7] [ 8]
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^ a b Nutman, Allen P.; Friend, Clark R.L.; Horie, Kenji; Hidaka, Hiroshi (2007). The Itsaq Gneiss Complex of Southern West Greenland and the Construction of Eorarchean Crust at Convergent Plate Boundaries (PDF) . Developments in Precambrian Geology. Vol. 15. pp. 187–218. doi :10.1016/S0166-2635(07)15033-7 . ISBN 9780444528100 . Retrieved 3 September 2016 .
^ Nutman, Allen P.; Friend, Clark R. L. (2009-08-01). "New 1:20,000 scale geological maps, synthesis and history of investigation of the Isua supracrustal belt and adjacent orthogneisses, southern West Greenland: A glimpse of Eoarchaean crust formation and orogeny" . Precambrian Research . 172 (3): 189–211. Bibcode :2009PreR..172..189N . doi :10.1016/j.precamres.2009.03.017 . ISSN 0301-9268 .
^ Ramírez-Salazar, Anthony; Müller, Thomas; Piazolo, Sandra; Webb, A. Alexander G.; Hauzenberger, Christoph; Zuo, Jiawei; Haproff, Peter; Harvey, Jason; Wong, Tsz Kin; Charlton, Callum (2021). "Tectonics of the Isua Supracrustal Belt 1: P-T-X-d Constraints of a Poly-Metamorphic Terrane" . Tectonics . 40 (3): e2020TC006516. Bibcode :2021Tecto..4006516R . doi :10.1029/2020TC006516 . ISSN 1944-9194 . S2CID 234022542 .
^ Nutman, Allen P.; Bennett, Vickie C.; Friend, Clark R. L.; Van Kranendonk, Martin J.; Chivas, Allan R. (September 2016). "Rapid emergence of life shown by discovery of 3,700-million-year-old microbial structures" . Nature . 537 (7621): 535–538. Bibcode :2016Natur.537..535N . doi :10.1038/nature19355 . ISSN 1476-4687 . PMID 27580034 . S2CID 205250494 .
^ Allwood, Abigail C.; Rosing, Minik T.; Flannery, David T.; Hurowitz, Joel A.; Heirwegh, Christopher M. (November 2018). "Reassessing evidence of life in 3,700-million-year-old rocks of Greenland" . Nature . 563 (7730): 241–244. Bibcode :2018Natur.563..241A . doi :10.1038/s41586-018-0610-4 . ISSN 1476-4687 . PMID 30333621 . S2CID 52987320 .
^ A. Alexander G. Webb, Thomas Müller, Jiawei Zuo, Peter J. Haproff, and Anthony Ramírez-Salazar (2020). "A non–plate tectonic model for the Eoarchean Isua supracrustal belt" . Lithosphere . 12 (1): 166–179. Bibcode :2020Lsphe..12..166W . doi :10.1130/L1130.1 . S2CID 213886867 . {{cite journal }}
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^ Furnes, Harald; de Wit, Maarten; Staudigel, Hubert; Rosing, Minik; Muehlenbachs, Karlis (2007-03-23). "A Vestige of Earth's Oldest Ophiolite" . Science . 315 (5819): 1704–1707. Bibcode :2007Sci...315.1704F . doi :10.1126/science.1139170 . ISSN 0036-8075 . PMID 17379806 . S2CID 11691449 .