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• Published in: Meteoritics & Planetary Science
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2013
• Subjects: Space and Planetary Science; Geophysics; Greenland; Maniitsoq
• Online Access: http://dx.doi.org/10.1111/maps.12209; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmaps.12209; https://onlinelibrary.wiley.com/doi/pdf/10.1111/maps.12209

Brecciated and hydrothermally altered orthogneiss‐amphibolite complex in the Maniitsoq structure, West Greenland. Inset: variably hydrothermally altered zircon with reset U‐Pb systematics, yielding a hydrothermal age of 3000.9 ± 1.9 Ma. The hydrothermal alteration of regional extent took place at upper amphibolite facies, and is interpreted as due to infl ux of (sea?) water and development of a crustal‐scale hydrothermal convection cell in a now deeply exhumed Archaean impact structure. A. Scherstén and A. A. Garde discuss the details in their paper on pp. 1472–1498. (Images courtesy of Adam Garde and Leif Johansson.)