Kalsbeek F. Rb-Sr isotope evidence on the age of the Nagssugtoqidian orogeny in West Greenland, with remarks on the use of the term ’Nagssugtoqidian’. rapggu [Internet]. 1979 Dec. 31 [cited 2024 Jul. 3];89:129-31. Available from: https://geusjournals.org/index.php/rapggu/article/view/7575