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  • 1.
    Fyhn, Michael B.W.
    et al.
    Geological Survey of Denmark and Greenland.
    Rasmussen, Thorkild Maack
    Geological Survey of Denmark and Greenland.
    Dahl-Jensen, Trine
    Geological Survey of Denmark and Greenland.
    Weng, Willy
    Geological Survey of Denmark and Greenland.
    Bojesen-Koefoed, Jørgen A.
    Geological Survey of Denmark and Greenland.
    Nielsen, Tove
    Geological Survey of Denmark and Greenland.
    Geological assessment of the East Greenland margin2012In: Geological Survey of Denmark and Greenland Bulletin, ISSN 1811-4598, E-ISSN 1604-8156, Vol. 26, p. 61-64Article in journal (Refereed)
  • 2.
    Korstgård, John A.
    et al.
    Department of Earth Sciences, University of Aarhus.
    Stensgaard, Bo Møller
    Geological Survey of Denmark and Greenland.
    Rasmussen, Thorkild Maack
    Geological Survey of Denmark and Greenland.
    Magnetic anomalies and metamorphic boundaries in the southern Nagssugtoqidian orogen, West Greenland2006In: Geological Survey of Denmark and Greenland Bulletin, ISSN 1811-4598, E-ISSN 1604-8156, Vol. 11, p. 179-184Article in journal (Refereed)
    Abstract [en]

    Within the southern Nagssugtoqidian orogen in West Greenland metamorphic terrains of both Archaean and Palaeoproterozoic ages occur with metamorphic grade varying from low amphibolite facies to granulite facies. The determination of the relative ages of the different metamorphic terrains is greatly aided by the intrusion of the 2 Ga Kangâmiut dyke swarm along a NNE trend. In Archaean areas dykes cross-cut gneiss structures, and the host gneisses are in amphibolite to granulite facies. Along Itilleq strong shearing in an E-W-oriented zone caused retrogression of surrounding gneisses to low amphibolite facies. Within this Itivdleq shear zone Kangâmiut dykes follow the E-W shear fabrics giving the impression that dykes were reoriented by the shearing. However, the dykes remain largely undeformed and unmetamorphosed, indicating that the shear zone was established prior to dyke emplacement and that the orientation of the dykes here was governed by the shear fabric. Metamorphism and deformation north of Itilleq involve both dykes and host gneisses, and the metamorphic grade is amphibolite facies increasing to granulite facies at the northern boundary of the southern Nagssugtoqidian orogen. Here a zone of strong deformation, the Ikertôq thrust zone, coincides roughly with the amphibolite-granulite facies transition. Total magnetic field intensity anomalies from aeromagnetic data coincide spectacularly with metamorphic boundaries and reflect changes in content of the magnetic minerals at facies transitions. Even the nature of facies transitions is apparent. Static metamorphic boundaries are gradual whereas dynamic boundaries along deformation zones are abrupt.

  • 3. Rasmussen, Thorkild Maack
    et al.
    Dawes, Peter Robert
    Kennedy Channel and its geophysical lineaments: New evidence that the Wegener Fault is a myth2011In: Geological Survey of Denmark and Greenland Bulletin, ISSN 1811-4598, E-ISSN 1604-8156, Vol. 23, p. 69-72Article in journal (Refereed)
  • 4. Rasmussen, Thorkild Maack
    et al.
    Thorning, Leif
    Olesen, Arne Vestergaard
    National Space Institute, Technical University of Denmark.
    Schjøth, Frands
    Quality control of airborne geophysical data from the EU mining Sector Support Programme, Ghana2011In: Geological Survey of Denmark and Greenland Bulletin, ISSN 1811-4598, E-ISSN 1604-8156, Vol. 23, p. 81-84Article in journal (Refereed)
  • 5.
    Steenfelt, Agnete
    et al.
    Geological Survey of Denmark and Greenland.
    Stendal, Henrik
    Geological Survey of Denmark and Greenland.
    Nielsen, B.M.
    Geological Survey of Denmark and Greenland.
    Rasmussen, Thorkild Maack
    Geological Survey of Denmark and Greenland.
    Gold in central West Greenland: Known and prospective occurrences2004In: Geological Survey of Denmark and Greenland Bulletin, ISSN 1811-4598, E-ISSN 1604-8156, Vol. 4, p. 65-68Article in journal (Refereed)
  • 6.
    Stensgaard, Bo Møller
    et al.
    Geological Survey of Denmark and Greenland.
    Rasmussen, Thorkild Maack
    Geological Survey of Denmark and Greenland.
    Steenfelt, Agnete
    Geological Survey of Denmark and Greenland.
    An integrative and quantitative assessment of the gold potential of the Nuuk region, West Greenland2006In: Geological Survey of Denmark and Greenland Bulletin, ISSN 1811-4598, E-ISSN 1604-8156, Vol. 10, p. 37-40Article in journal (Refereed)
1 - 6 of 6
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