Nagssugtoqidian orogeny explained

The Nagssugtoqidian orogeny was a late Paleoproterozoic mountain-building event that affected Greenland during the period 1.91 to 1.77 Ga.[1] The orogenic belt formed during this event marks the northern boundary of the mainly Archaean North Atlantic Craton. It was first recognised by Ramberg in 1949, based on its effect on the Kangaamiut dike swarm. The subsequent recognition of magmatic terranes representing past island arcs and two potential sutures representing now vanished subduction zones within the belt, have enabled its interpretation in terms of plate tectonics.[2]

Notes and References

  1. Book: Mayborn, K.R.. http://www.geus.dk/publications/bull/nr11/nr11_p061-086.pdf. Lesher. C.E.. 2006. Origin and evolution of the Kangâmiut mafic dyke swarm, West Greenland. Garde, A.A. . Kalsbeek, F.. Precambrian crustal evolution and Cretaceous-Palaeogene faulting in West Greenland. Geological Survey of Denmark and Greenland Bulletin. 11 . 61–86.
  2. Book: Garde, A.A. . The Evolving Continents: Understanding Processes of Continental Growth . Hollis . J.A. . Geological Society, London . 2010 . 9781862393035 . Kusky . T. M . Special Publications . 338 . 213–234 . A buried Palaeoproterozoic spreading ridge in the northern Nagssugtoqidian orogen, West Greenland . 10.1144/SP338.11 . Zhai . M.-G. . Xiao . W. . 10.1.1.980.1494 .

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