Itsaq Gneiss Complex, Isua Greenstone Belt (Isua Supercrustal Belt), Nuuk, Sermersooq, Greenlandi
| Regional Level Types | |
|---|---|
| Itsaq Gneiss Complex | Complex |
| Isua Greenstone Belt (Isua Supercrustal Belt) | Belt |
| Nuuk | Municipality (Former) |
| Sermersooq | Municipality |
| Greenland | Autonomous Territory |
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Latitude & Longitude (WGS84):
65° North , 50° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
Type:
Köppen climate type:
Ca. 3900-3600 Ma old gneiss complex (with tonalite-trondhjemite-granodiorites (TTGs), peridotite enclaves and amphibolites).
Located in southern West Greenland.
The complex provides the most extensive record of early crustal evolution of Earth.
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
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References
Nutman, Allen P., Friend, Clark R.L., Horie, Kenji, Hidaka, Hiroshi (n.d.) Chapter 3.3 The Itsaq Gneiss Complex of Southern West Greenland and the Construction of Eoarchaean Crust at Convergent Plate Boundaries. In Earth's Oldest Rocks. Elsevier. p.187-218. doi:10.1016/s0166-2635(07)15033-7
Nutman, Allen P., McGregor, Victor R., Friend, Clark R.L., Bennett, Victoria C., Kinny, Peter D. (1996) The Itsaq Gneiss Complex of southern West Greenland; the world's most extensive record of early crustal evolution (3900-3600 Ma) Precambrian Research, 78 (1) 1-39 doi:10.1016/0301-9268(95)00066-6
Nutman, Allen P., Friend, Clark R. L., Bennett, Vickie C. (2002) Evidence for 3650-3600 Ma assembly of the northern end of the Itsaq Gneiss Complex, Greenland: Implication for early Archaean tectonics. Tectonics, 21 (1). 5-1 doi:10.1029/2000tc001203
Friend, C., Bennett, V., Nutman, A. (2002) Abyssal peridotites >3,800 Ma from southern West Greenland: field relationships, petrography, geochronology, whole-rock and mineral chemistry of dunite and harzburgite inclusions in the Itsaq Gneiss Complex. Contributions to Mineralogy and Petrology, 143 (1) 71-92 doi:10.1007/s00410-001-0332-7
Friend, Clark R. L., Nutman, Allen P. (2005) Complex 3670–3500 Ma Orogenic Episodes Superimposed on Juvenile Crust Accreted between 3850 and 3690 Ma, Itsaq Gneiss Complex, Southern West Greenland. The Journal of Geology, 113 (4) 375-397 doi:10.1086/430239
Nutman, Allen P., Bennett, Vickie C., Friend, Clark R. L., Horie, Kenji, Hidaka, Hiroshi (2007) ∼3,850 Ma tonalites in the Nuuk region, Greenland: geochemistry and their reworking within an Eoarchaean gneiss complex. Contributions to Mineralogy and Petrology, 154 (4) 385-408 doi:10.1007/s00410-007-0199-3
Horie, Kenji, Nutman, Allen P., Friend, Clark R.L., Hidaka, Hiroshi (2010) The complex age of orthogneiss protoliths exemplified by the Eoarchaean Itsaq Gneiss Complex (Greenland): SHRIMP and old rocks. Precambrian Research, 183 (1) 25-43 doi:10.1016/j.precamres.2010.06.016
Hoffmann, J. Elis, Nagel, Thorsten J., Münker, Carsten, Næraa, Tomas, Rosing, Minik T. (2014) Constraining the process of Eoarchean TTG formation in the Itsaq Gneiss Complex, southern West Greenland. Earth and Planetary Science Letters, 388. 374-386 doi:10.1016/j.epsl.2013.11.050
McIntyre, T., Pearson, D. G., Szilas, K., Morishita, T. (2019) Implications for the origins of Eoarchean ultramafic rocks of the North Atlantic Craton: a study of the Tussaap Ultramafic complex, Itsaq Gneiss complex, southern West Greenland. Contributions to Mineralogy and Petrology, 174 (12) doi:10.1007/s00410-019-1628-9
van de Löcht, J., Hoffmann, J.E., Rosing, M.T., Sprung, P., Münker, C. (2020) Preservation of Eoarchean mantle processes in ∼3.8 Ga peridotite enclaves in the Itsaq Gneiss Complex, southern West Greenland. Geochimica et Cosmochimica Acta, 280. 1-25 doi:10.1016/j.gca.2020.03.043
Lewis, Jonathan A., Hoffmann, J. Elis, Schwarzenbach, Esther M., Strauss, Harald, Liesegang, Moritz, Rosing, Minik T. (2021) Sulfur isotope evidence for surface-derived sulfur in Eoarchean TTGs. Earth and Planetary Science Letters, 576. 117218pp. doi:10.1016/j.epsl.2021.117218
Sawada, Hikaru, Morishita, Tomoaki, Vezinet, Adrien, Stern, Richard, Tani, Kenichiro, Nishio, Ikuya, Takahashi, Kanta, Graham Pearson, D., Szilas, Kristoffer (2023) Zircon within chromitite requires revision of the tectonic history of the Eoarchean Itsaq Gneiss complex, Greenland. Geoscience Frontiers, 14 (6) 101648 doi:10.1016/j.gsf.2023.101648
Lewis, J.A., Hoffmann, J.E., Schwarzenbach, E.M., Strauss, H., Li, C., Münker, C., Rosing, M.T. (2023) Sulfur isotope evidence from peridotite enclaves in southern West Greenland for recycling of surface material into Eoarchean depleted mantle domains. Chemical Geology, 633. 121568 doi:10.1016/j.chemgeo.2023.121568
