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| the solidification of the Skaergaard intrusion: Eruption of East Greenland flood basalts in less than...the cumulus stratigraphy of the Skaergaard intrusion, East Greenland. Samples from the Lower Zones a–c...gabbroic pegmatite from LZa–c. Fluid inclusions in quartz and the mineral assemblage in the granophyres record...the Skaergaard intrusion crystallised. Pegmatitic granophyre from LZa–c consists mainly of quartz, plagioclase...titanite, biotite and fluorapatite. Granophyric quartz, albite and alkali feldspar crystallised from water-saturated |
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| aqueous, saline solutions in the Skaergaard intrusion, east Greenland Rune B. Larsen a, C. Kent Brooks...H20-NaC1-CH4 occur in fluid inclusions enclosed by quartz, apatite and feldspar from gabbroic pegmatities...structures and intercumulus minerals within the Skaergaard intrusion. The majority of the fluid inclusions resemble...Thermodynamic consideration of the stability of feldspars+quartz, and the C O - H system, indicates that the solutions...metasomatism of the primocryst assemblages of the Skaergaard intrusion. Introduction Geochemical studies on apatite |
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| (1997) 645-658 40Ar/ 39Ardating of the Skaergaard intrusion Marc M. Hirschmann a3*, Paul R. Renne b*l...report the first 4oAr-39Ar data for the Skaergaard Intrusion, based on analyses of hornblende and biotite...from a gabbro from Lower Zone A (LZa) of the Skaergaard Layered Series indicates that the sample has...inherited from old crust and does not constrain the intrusion age, apart from indicating that it is less than...emplacement and final crystallization of the Skaergaard magma chamber to be at 55.75 + 0.30 Ma and 55 |
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| Evolution of Gabbroic Pegmatites in the Skaergaard Intrusion, East Greenland by RUNE B. LARSEN 1 * AND C. KENT...ABSTRACT The layered tholeiitic gabbros of the Skaergaard Intrusion contain a large variety of gabbroic pegmatites...Fe-Ti oxides, olivine, and apatite, as well as quartz, amphibole, and biotite. The pegmatites of the...is approached; (C) is the granophyric zone with quartz, orthoclase, plagioclase, fayalite, hastingsite...intercumulus liquids which were derived from the Skaergaard parental melts. The pegmatitic melts were buoyant |
 | Thy, Peter, Lesher, Charles E., Nielsen, Troels F.D., Brooks, C. Kent (2008) On the Skaergaard intrusion and forward modeling of its liquid line of descent: A reply to “Principles of applied experimental igneous petrology” by Morse, 2008, Lithos 105, pp. 395−399. Lithos, 105 (3) 401-411 doi:10.1016/j.lithos.2008.04.007 | Journal (article/letter/editorial) |
| a t e / l i t h o s Discussion On the Skaergaard intrusion and forward modeling of its liquid line...CA 95616, USA Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 København K, Denmark...duplicated main features of the gabbros in the Skaergaard layered series [Thy, P., Lesher, C.E., Nielsen...Brooks, C.K. 2006. Experimental constraints on the Skaergaard liquid line of descent. Lithos 92, 154–180.]...emplacement and crystallization conditions of the Skaergaard intrusion. The dike rocks used as starting materials |
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| and Mining in Greenland GEOLOGY AND ORE The mineral potential of the East Greenland Palaeogene intrusions...complex Wiedemann Fjord Lilloise intrusion Kangerlussuaq intrusion Flammefjeld Bl os se Sødalen...Sødalen Miki Fjord Skaergaard intrusion Kangerlussuaq Kap Edvard Holm Palaeogene basalt Nordre Aputiteq Cretaceous/Palaeogene...Major fault Iceland Map of the Palaeogene East Greenland igneous province. 2 16° I Major sill complexes...strike for hundreds of kilometres and represent intrusion from c. 60 to at least 35 Ma. The dyke swarms |
 | Andersen, Jens C. Ø., Rollinson, Gavyn K., McDonald, Iain, Tegner, Christian, Lesher, Charles E. (2017) Platinum-group mineralization at the margin of the Skaergaard intrusion, East Greenland. Mineralium Deposita, 52 (6) 929-942 doi:10.1007/s00126-016-0707-3 | Journal (article/letter/editorial) |
| mineralization at the margin of the Skaergaard intrusion, East Greenland Jens C. Ø. Andersen 1 & Gavyn K...(PGEs) along the northern margin of the Skaergaard intrusion include a sulfide-bearing gabbro with slightly...that the occurrences are related to the Skaergaard intrusion. The Marginal Border Series locally displays...explained by sulfide-silicate immiscibility in the Skaergaard magma with R factors of 110– 220. Nickel depletion...chalcopyrite-bornite-digenite assemblage found in the Skaergaard Layered Series and Platinova Reef. These differences |
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| Oxygen and Hydrogen Isotope Study of the Skaergaard Intrusion and its Country Rocks: a Description of...clinopyroxene, from about 400 samples of the Skaergaard layered gabbro intrusion and its country rocks. The <518O...values of plagioclase decrease upward in the intrusion, from 'normal' values of about +6-0 to +6-4 in...faults, particularly in the NE portion of the intrusion, where the Layered Series is very shallow-dipping...stoped blocks of gneiss. In the upper part of the intrusion these granophyre dikes have <518O values similar |
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| contact aureole of the Basistoppen sill, East Greenland H.R. Naslund Department of Earth Sciences, Dartmouth...into the upper part of the Skaergaard complex shortly after the Skaergaard m a g m a had solidified. Heat...disequilibrium partial melting in the adjacent Skaergaard ferrogabbros. Olivine, ferrobustamite, and magnetite...are distinct from those found elsewhere in the intrusion. The extreme degree o f contact metamorphism adjacent...the Basistoppen sill is a consequence of the intrusion of the sill into host rocks that were already |
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| in Rocks and Coexisting Minerals of the Skaergaard Intrusion, East Greenland1 by H. p. TAYLOR, JR., and...oxygen-isotopic studies to the Skaergaard intrusion of East Greenland because this intrusive appears...example of magmatic crystallization. The Skaergaard intrusion is a gravitationally layered gabbroic mass...the list of references. At present, the Skaergaard intrusion is one of the most thoroughly studied igneous...September 5, 2015 ABSTRACT The Skaergaard intrusion of East Greenland is a gravitationally stratified |
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| Petrology of the Basistoppen Sill, East Greenland: A Calculated Magma Differentiation Trend by H. R....tholeiitic intrusion of Eocene age contained largely within the upper part of the Skaergaard igneous complex...a large xenolith of pre-Skaergaard country-rock which sank into the Skaergaard magma chamber (Wager &...to be a post-Skaergaard intrusion emplaced shortly after solidification of the Skaergaard magma (Douglas...differentiation sequences of any known tholeiitic intrusion. The degree of iron-enrichment developed in the |
 | WHITE, C. M., GEIST, D. J., FROST, C. D., VERWOERD, W. J. (1989) Petrology of the Vandfaldsdalen Macrodike, Skaergaard Region, East Greenland. Journal of Petrology, 30 (2) 271-298 doi:10.1093/petrology/30.2.271 | Journal (article/letter/editorial) |
| of the Vandfaldsdalen Macrodike, Skaergaard Region, East Greenland by CRAIG M. WHITE 1 , DENNIS J. GEIST...appears to cut the eastern margin of the Skaergaard intrusion and may have served as a feeder for the...Kangerdlugssuaq area in the vicinity of the Skaergaard intrusion. These dikes, along with smaller diabasic...diabasic sheets, the Basistoppen sill, and the Skaergaard intrusion itself, comprise a compositionally similar...FS— felsic series of the macrodike; SKG—Skaergaard intrusion; Tv— Tertiary basalts and pyroclastic rocks; |
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| Composition of Strontium in the Skaergaard Intrusion, East Greenland by E. I. HAMILTON Department of...investigation of the Sr87/Sr86 ratios in the Skaergaard rocks was undertaken to determine whether or...which has undoubtedly taken place in the Skaergaard intrusion, would not produce a. variation in the strontium...the different parts of the differentiated Skaergaard intrusion has been determined. The average Sr87/Sr86...granophyres. The Sr87/Sr86 ratios for the basic Skaergaard rocks are similar to those found by previous |
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| org/10.1007/s00410-018-1466-1 ORIGINAL PAPER The Skaergaard trough layering: sedimentation in a convecting...parts of the floor cumulates of the Skaergaard Intrusion, East Greenland, contain abundant features known...from the nearby chamber walls. Keywords The Skaergaard intrusion · Trough layering · Texture analysis · EBSD...example of trough layering in the Skaergaard intrusion of East Greenland; a particularly contentious example...igneous system. Geological background The Skaergaard intrusion (Fig. 1) formed from the injection of a |
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| 10.1007/s00410-008-0361-6 ORIGINAL PAPER The Skaergaard liquid line of descent revisited Peter Thy Æ...between the suggestion that the iron content of Skaergaard liquids increases during Fe–Ti oxide fractionation...fayalite-magnetite-quartz oxygen buffer (FMQ). A new petrographic study of average Skaergaard gabbros shows...constraints, as well as experimental results on Skaergaard-related dikes, predicts that fractionation of...been at, or slightly below, the fayalite-magnetite-quartz oxygen buffer (FMQ). Under closed system evolution |
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| The Skaergaard Layered Series: I. Structure and Average Compositions by ALEXANDER R. McBIRNEY Center...Oregon, 97403 ABSTRACT Re-examination of the Skaergaard Layered Series in the light of more extensive...that redistributed certain components after the intrusion reached advanced stages of solidification. INTRODUCTION...re-examine each of the major divisions of the Skaergaard Intrusion. H. R. Naslund (1984) has already reported...trace-elements, and isotopic geochemistry of the intrusion as a whole will be provided elsewhere. PRINCIPAL |
 | Godel, Bélinda, Rudashevsky, Nikolay S., Nielsen, Troels F.D., Barnes, Stephen J., Rudashevsky, Vladimir N. (2014) New constraints on the origin of the Skaergaard intrusion Cu–Pd–Au mineralization: Insights from high-resolution X-ray computed tomography. Lithos, 190. 27-36 doi:10.1016/j.lithos.2013.11.019 | Journal (article/letter/editorial) |
| New constraints on the origin of the Skaergaard Intrusion Cu-Pd-Au mineralization: Insights from high-resolution...N., New constraints on the origin of the Skaergaard Intrusion Cu-Pd-Au mineralization: Insights from high-resolution...MANUSCRIPT New constraints on the origin of the Skaergaard Intrusion Cu- T Pd-Au mineralization: Insights from...Russia. c Geological Survey of Denmark and Greenland (GEUS), Copenhagen 1350, Denmark. CE P b AC...tomography T Platinum-group elements IP Skaergaard intrusion AC CE P TE D MA NU SC R Layered |
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| The Skaergaard Intrusion of East Greenland: Paradigms, Problems and New Perspectives Marian B. Holness1...2138/gselements.13.6.391 T he Skaergaard Intrusion of East Greenland is the quintessential example of...expelled from solidifying crystal mushy zones. Skaergaard remains a cradle for new insights into igneous...immiscible liquids on magma evolution. Keywords : Skaergaard, cumulates, fractionation, gabbro INTRODUCTION...wide range of compositions observed in a single intrusion can be created internally by the progressive change |
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| GEOLOGICAL SURVEY OF DENMARK AND GREENLAND BULLETIN 24 • 2011 The East Greenland rifted volcanic margin C....Kent Brooks GEOLOGICAL SURVEY OF DENMARK AND GREENLAND DANISH MINISTRY OF CLIMATE, ENERGY AND BUILDING... Geological Survey of Denmark and Greenland Bulletin 24 Keywords East Greenland, North Atlantic, rifted volcanic...the glacier, the 1965 Oxford University East Greenland Expedition travelled and collected from this area...in full, viz. Geological Survey of Denmark and Greenland Bulletin. If abbreviation of this volume is necessary |
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| Precambrian Sequence Bordering the Skaergaard Intrusion by M. A. KAYS, G. G. GOLES, AND T. W. GROVER...tonalitic-granodioritic orthogneisses bordering the Skaergaard Intrusion contain widespread boudins and lenses of...consist of folia of coexisting sillimanite-biotite-quartz and correspond roughly to metamorphism at the second...or exceeded the stability of biotite—sillimanite—quartz in metapelites and chlorite-orthopyroxene-oliv...pressure-dependent garnet-plagioclase-sillimanite-quartz equilibrium assemblage in metapelites yield temperature |
 | Wotzlaw, Jörn-Frederik, Bindeman, Ilya N., Schaltegger, Urs, Brooks, C. Kent, Naslund, H. Richard (2012) High-resolution insights into episodes of crystallization, hydrothermal alteration and remelting in the Skaergaard intrusive complex. Earth and Planetary Science Letters, 355. 199-212 doi:10.1016/j.epsl.2012.08.043 | Journal (article/letter/editorial) |
| hydrothermal alteration and remelting in the Skaergaard intrusive complex Jörn-Frederik Wotzlaw a,n...studied intrusive bodies on Earth—the Skaergaard intrusion in East Greenland. With analytical uncertainties...several important events during cooling of this intrusion. Initial cooling of the shallowly intruded 300...gabbroic pegmatite in the lower portion of the intrusion. Based on this zircon crystallization age and...emplacement to be 56.02 Ma. The last portions of Skaergaard appear to crystallize completely 100 ka after |
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| com/locate/lithos Experimental constraints on the Skaergaard liquid line of descent P. Thy a,⁎, C.E. Lesher...CA 95616, USA Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 København K, Denmark...modeling the liquid line of descent of the Skaergaard intrusion. A series of melting experiments on chilled...tholeiitic and ferrobasaltic dikes associated with the intrusion is, in combination with existing data, used to...gas mostly controlled to the fayalite-magnetite-quartz oxygen buffer (FMQ). Using these experimental results |
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| grain shape in the floor cumulates of the Skaergaard Intrusion is broadly similar to that observed in sills...controlled by the global cooling rate of the intrusion, and the second (minor) stage within the mushy...gabbro; dolerite; Skaergaard Intrusion; Bushveld Intrusion; Sept Iles Intrusion; Rum Intrusion INTRODUCTION...parts of the floor cumulates of the Skaergaard Intrusion, East Greenland. In these highly evolved, and last...shape Fig. 3. Microstructural variation in the Skaergaard Layered Series. The position of the progressive |
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| fills vesiclesand vugs in lavas 30-70 m from the intrusion. Parageneticallyequivalent phasesinclude fluorite...assemblages.The presenceof fluorite, wollastonite, quartz, and calcite with these garnets combined with fluid...MANNING AND BIRD: FLUORIAN GARNETS FROM THE SKAERGAARD INTRUSION cur in a restricted area ofthe pyroxene...garnet-bearingascooling of the gabbroic Skaergaard intrusion (Fig. l) semblagefound in amygdule centers...em- inclusions with -8 wto/oNaCl equivalent in quartz from placement and the cooling and contraction |
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| upper parr of the Skaergaardintrusion of East Greenland. It occurs in these rocks as an alteration product...moderate ? during the subsoliduscooling of the intrusion. Introduction Numerousdetailed studieshave been...Upper Border Group y (UBGy) unit of the Skaergaard intrusion. This unit has been describedas a mixture...Brown, 1967),but most sampleswould be classifiedas quartz diorite or tonalite using the system of Streckeisen...Serpentine is commonly associated with ilvaite in Skaergaard olivines, but the proportions of ilvaite and |
