Articles | Volume 35, issue 4
https://doi.org/10.5194/ejm-35-479-2023
https://doi.org/10.5194/ejm-35-479-2023
Research article
 | 
17 Jul 2023
Research article |  | 17 Jul 2023

Detrital garnet petrology challenges Paleoproterozoic ultrahigh-pressure metamorphism in western Greenland

Jan Schönig, Carsten Benner, Guido Meinhold, Hilmar von Eynatten, and N. Keno Lünsdorf

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Cited articles

Ackerson, M. R., Watson, E. B., Tailby, N. D., and Spear, F. S.: Experimental investigation into the substitution mechanisms and solubility of Ti in garnet, Am. Mineral., 102, 158–172, https://doi.org/10.2138/am-2017-5632, 2017. 
Atherton, M. P.: The garnet isograd in pelitic rocks and its relationship to metamorphic facies, Am. Mineral., 49, 1331–1349, 1964. 
Axler, J. A. and Ague, J. J.: Oriented multiphase needles in garnet from ultrahigh-temperature granulites, Connecticut, USA, Am. Mineral., 100, 2254–2271, https://doi.org/10.2138/am-2015-5018, 2015. 
Bak, J., Korstgård, J., and Sørensen, K.: A major shear zone within the Nagssugtoqidian of West Greenland, Tectonophysics, 27, 191–209, https://doi.org/10.1016/0040-1951(75)90016-5, 1975. 
Baldwin, S. L., Schönig, J., Gonzalez, J. P., Davies, H., and von Eynatten, H.: Garnet sand reveals rock recycling processes in the youngest exhumed high- and ultrahigh-pressure terrane on Earth, P. Natl. Acad. Sci. USA, 118, e2017231118, https://doi.org/10.1073/pnas.2017231118, 2021. 
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Short summary
When and how modern-style plate tectonics initiated is a matter of debate. Although the earliest unequivocal evidence for ultrahigh-pressure metamorphism is Neoproterozoic, similar processes have been proposed for Paleoproterozoic rocks of western Greenland. We intensely screened the area by studying detrital heavy minerals, garnet chemistry, and mineral inclusion assemblages in garnet. Our results raise considerable doubts on the existence of Paleoproterozoic ultrahigh-pressure rocks.