none 10.1144/gsjgs.156.1.0015 Geological Society of London Geological Society of London 1881 30747210 44798 2024111903225300123 10.1144 2024-11-19T12:37:09Z 2007-12-20T22:47:47Z 48 Journal of the Geological Society JGS 0016-7649 2041-479X 05 16 2007 01 1999 156 1 J. GROCOTT School of Geological Sciences, CEESR, Kingston University, Kingston-upon-Thames KT1 2EE, UK (e-mail: ) A. A. GARDE Geological Survey of Denmark and Greenland, Thoravej 8, DK 2400 Copenhagen NV B. CHADWICK Earth Resources Centre, University of Exeter, Exeter, EX4 4QE, UK A. R. CRUDEN Department of Geology, University of Toronto, Erindale College, Mississauga, Ontario L5L 1C6, Canada C. SWAGER North Ltd Exploration, PO Box 231, Cloverdale, WA 6105, Australia In the Palaeoproterozoic Ketilidian orogen of South Greenland, tabular intrusions of the rapakivi granite suite exposed at Graah Fjelde, Lindenow Fjord and Qernertoq, and a Mesoproterozoic syenite of the Gardar province exposed at Paatusoq, were emplaced by a combination of roof uplift and floor depression. The strain associated with the emplacement of the intrusions mainly involved redistribution of mass vertically within the lithosphere. Space for the emplacement of the rapakivi plutons was not created during regional extension on low-angle, ductile shear zones as claimed by some previous workers and there is no evidence that emplacement of the intrusions coincided with extensional collapse of the orogen following crustal thickening. The rapakivi granites post-date peak metamorphism in the orogen by 35–46 Ma and their contacts cross-cut and clearly post-date intense, flat-lying D1/D2 fabrics that formed by partitioning of deformation into arc-normal and arc-parallel components during oblique convergence. 06 06 2022 01 1999 15 24 10.1144/gsjgs.156.1.0015 1 10.1144/crossmark-policy www.lyellcollection.org true 1998-01-12 1998-08-25 2022-06-06 https://doi.org/10.15223/policy-002 10.1144/gsjgs.156.1.0015 https://www.lyellcollection.org/doi/10.1144/gsjgs.156.1.0015 https://www.lyellcollection.org/doi/pdf/10.1144/gsjgs.156.1.0015 https://geoscienceworld.org/jgs/article-lookup?doi=10.1144/gsjgs.156.1.0015 Geology of Greenland Allaart J.H. 121 1976 Allaart J.H., Escher A., Watt W. S.The Ketilidian mobile belt in South GreenlandGeology of Greenland1976CopenhagenGranlands Geologiske Undersøgelse121151 10.1016/0040-1951(84)90262-2 10.37570/bgsd-1984-33-29 Meddelelser fra Dansk Geologisk Forening Bridgwater D. 167 15 1963 A review of the Sydpraven granite and other “new granites” of South Greenland Bridgwater D.A review of the Sydpraven granite and other “new granites” of South GreenlandMeddelelser fra Dansk Geologisk Forening196315167182 10.1016/0040-1951(74)90062-6 10.1017/S0263593300007860 Geological Society, London, Special Publications Precambrian Crustal Evolution in the North Atlantic Region Chadwick B. 179 1996 Chadwick B., Garde A.A., Brewer T.S.Palaeoproterozoic oblique plate convergence in South Greenland: a reappraisal of the Ketilidian OrogenPrecambrian Crustal Evolution in the North Atlantic Region1996122LondonGeological Society179196 Geological Society, London, Special Publications Eastern Canadian Shield Onshore-Offshore Transect (ECSOOT) Chadwick B. 1997 Chadwick B., Garde A.A., Grocott J., Swager C., Wardle R.J., Hall J.Batholith-Forearc structure in the Palaeoproterozoic Ketilidian orogen, South-East GreenlandEastern Canadian Shield Onshore-Offshore Transect (ECSOOT)1997University of British Columbia, Lithoprobe Secretariat Report, in press Deformation enhanced fluid transport in the Earth's crust and mantle Clemens J.D. 145 1997 Clemens J.D., Petford N., Mawer C.K., Holness M.B.Ascent mechanisms of granitic magmas: causes and consequencesDeformation enhanced fluid transport in the Earth's crust and mantle19979145172Mineralogical Society Special Series Journal of the Geological Society, London Cruden A.R. 853 154 1998 On the emplacement of tabular granites Cruden A.R.On the emplacement of tabular granitesJournal of the Geological Society, London1998154853862 10.1029/JB091iB05p04920 10.1130/0016-7606(1992)104<0606:TGAAEO>2.3.CO;2 Garde A.A. & Chadwick B. 1996. Geological map of Greenland 1:100 000: 60 V.3 Nord Søndre Sermilik. Geological Survey of Denmark and Greenland Copenhagen. 10.34194/ggub.v176.5063 Eastern Canadian Shield Onshore-Offshore Transect (ECSOOT) Garde A.A. 92 61 1997 Rapakivi granite emplacement in the Palaeoproterozoic Ketilidian Orogen, South Greenland Garde A.A., Grocott J., Cruden A.R., Wardle R.J., Hall J.Rapakivi granite emplacement in the Palaeoproterozoic Ketilidian Orogen, South GreenlandEastern Canadian Shield Onshore-Offshore Transect (ECSOOT)1997b619299University of British Columbia, Lithoprobe Secretariat Report 10.1130/0091-7613(1991)019<0784:POSACG>2.3.CO;2 10.1130/0091-7613(1994)022<0391:MOCGIE>2.3.CO;2 10.1016/0016-7037(75)90185-4 Eastern Canadian Shield Onshore-Offshore Transect (ECSOOT) Hamilton M.A. 118 1997 Hamilton M.A., Wardle R.J., Hall J.Synopsis of new U-Pb geochronological results from the Ketilidian orogen, South GreenlandEastern Canadian Shield Onshore-Offshore Transect (ECSOOT)199761118134University of British Columbia, Lithoprobe Secretariat Report Eastern Canadian Shield Onshore-Offshore Transect (ECSOOT) Hamilton M.A. 112 1996 Hamilton M.A., Garde A.A., Chadwick B., Swager C., Wardle R.J., Hall J.Observations on Palaeoproterozoic Forearc sedimentation and deformation: Preliminary U-Pb results from the Ketilidian Orogen, South GreenlandEastern Canadian Shield Onshore-Offshore Transect (ECSOOT)199657112122University of British Columbia, Lithoprobe Secretariat Report 10.1017/S0263593300014255 10.18814/epiiugs/1996/v19i4/004 10.1029/92TC00336 10.1038/343452a0 Tectonophysics Jackson M.D. 261 18 1988 Mechanics of growth of some laccolithic intrusions in the Henry Mountains, Utah, I. Field observations, Gilbert's model, physical properties and flow of the magma Jackson M.D., Pollard D.DMechanics of growth of some laccolithic intrusions in the Henry Mountains, Utah, I. Field observations, Gilbert's model, physical properties and flow of the magmaTectonophysics198818261309 Kalsbeek F. Larsen L.M. & Bondam J. 1990. Descriptive text to 1:500 000 Geological Map of Greenland Sheet 1 Sydgr0nland. Grønlands Geologiske Undersøgelse Copenhagen. 10.1144/gsjgs.154.1.0001 Molyneux S.J. 1997. Processes of granite emplacement. 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