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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 |
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| OLIVINES FROM THE SKAERGAARD INTRUSION, KANGERDLUGSSUAK, EAST GREENLAND W. A. DBBn, Uniaersityof Manchester...separated from the rocks of the Skaergaard intrusion,l Kangerdlugssuak, East Greenland, have been analysed. The...The olivines occur in a layered. gabbro intrusion which shows continuous crystallisation-differentiation...hypersthene-olivine-gabbro to an upper and later fayalite-quartz-gabbro. Two of the three main constituents...important constituent of the earlier rocks of the intrusion and varies from Fsal in the lowest exposedrocks |
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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...Serpentine is commonly associated with ilvaite in Skaergaard olivines, but the proportions of ilvaite and...X-ray crystallography The ilvaite from the Skaergaard intrusion was first identified by comparison of its |
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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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| contest of roclxs and xninemls from the East Greenland ion, L. R. WAGER, J. VAN R. $&IT* and H. IRVING...separated minerals from the Skeergaard intrusion, East Greenland, has bsen determined by radioectivation...rock-sand minerals from the differentiated Skaergaard intrusion (WAGER and DEIER, 1939; WAGER and MITCHELL...basalts it is from 0.72 to 0.32 p.p.m_ Rocks of the Skaergaard layered series show an increasing content of...(see below). The two latest layered rocks, the fayalite fe~og~bbr~s 4327 and 4328, have iron-rich ferromagnesi~~ |
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| 10.1007/s00410-008-0361-6 ORIGINAL PAPER The Skaergaard liquid line of descent revisited Peter Thy Ă...between the suggestion that the iron content of Skaergaard liquids increases during FeâTi oxide fractionation...the fayalite-magnetite-quartz oxygen buffer (FMQ). A new petrographic study of average Skaergaard gabbros...constraints, as well as experimental results on Skaergaard-related dikes, predicts that fractionation of...thought to have been at, or slightly below, the fayalite-magnetite-quartz oxygen buffer (FMQ). Under closed |
 | 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 âPrinciples of applied experimental igneous petrologyâ by Morse, 2008, Lithos 105, pp. 395â399. 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, Ăster Voldgade 10, DK-1350 KĂžbenhavn 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, 154â180.]...emplacement and crystallization conditions of the Skaergaard intrusion. The dike rocks used as starting materials |
 | McDonald, A. M., Cabri, L. J., Rudashevsky, N. S., Stanley, C. J., Rudashevsky, V. N., Ross, K. C. (2008) Nielsenite, PdCu3, a new platinum-group intermetallic mineral species from the Skaergaard intrusion, Greenland. The Canadian Mineralogist, 46 (3) 709-716 doi:10.3749/canmin.46.3.709 | Journal (article/letter/editorial) |
| INTERMETALLIC MINERAL SPECIES FROM THE SKAERGAARD INTRUSION, GREENLAND Andrew M. McDONALD§ Mineral Exploration...species discovered in the Skaergaard intrusion, Kangerdlugssuaq area, East Greenland, occurs in a tholeiitic... orthopyroxene, ilmenite, titanian magnetite, fayalite and accessory chlorite-group minerals, ferrosaponite...geologist with the Geological Survey of Denmark and Greenland. Keywords: nielsenite, PdâCu intermetallic, new...species, platinum-group elements, Skaergaard intrusion, Greenland. § ¶ E-mail address: amcdonald@laurentian |
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| Late Stages of Fractionation of the Skaergaard Intrusion, East Greenland by G. M. BROWN and E. A. V I N C...PLATES INTRODUCTION I N the memoir on the Skaergaard intrusion, Wager & Deer (1939) showed that five augites...intrusions followed a similar trend, but that only the Skaergaard contained evidence for the trend characteristics...ferroaugites, and ferrohedenbergites from the Skaergaard layered series and, combining these with the...analysed by Deer, postulated a trend unique to this intrusion (op. cit.,fig.1). Six of these plotted points |
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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 aâc...granophyres record the pressure under which the Skaergaard intrusion crystallised. Pegmatitic granophyre from...ferrohastingsitic and ferroedenitic hornblende, fayalite (Fo4â5), titanite, biotite and fluorapatite. Granophyric...Pressures, recalculated to the roof pendant of the intrusion, are 0.7 ± 0.5 for LZa, 2.0 ± 0.2 for LZbâc, 2 |
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| Table 1. specimens 1-11 belong to the forsterite-fayalite series, the specimens 11-15 conform closely to...in which the spectraof the olivines forsterite,fayalite, tephroite,and monticelliteare comparedwith that...olivine composition. The spectra of the forsterite-fayalite series (except specimen8, which contains appreciableMn)...the peaks could be traced across the forsterite-fayalite series.Such sets of peaks are here labelled bands1...spectraof specimens5 to 11. The spectraof the fayalite-tephroiteseriesare illustrated in Figure 4. The |
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| IN THE EAST L. R. WAGER, No. 8 SKAERGAARD INTRUSION, GREENLAND E. A. VINCENT AND A. A. SMALES...existenceof an immisciblesulphideliquid .. 865 Fayalite ferrogabbrosof the upper Purple Band with iron...ABSTRACT In the chilled marginal gabbro of the Skaergaard intrusion are small specksof chalcopyriteand bornire;...representativeof the amount in the 300 kma of original Skaergaard magma. In the layered rocks, up to the latest...precipitatesilicateand oxide minerals. In the fayalite ferrogabbrosat the top of the layered series droplet- |
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| simple crystallization differentiation of the Skaergaard-like magma is obtained and plotted in a FeCH-Fe203-MgO-Na20+K20...solidification of the Skaergaard intrusion was also examined [2] in terms of the forsterite-fayalite ratio of normative...independently. In the actual example of the Skaergaard intrusion, the sets of physical conditions obtained...rock can be observed as an outcrop. The Skaergaard intrusion is one of the rare examples in which the...belong to this group. The example of the Skaergaard intrusion may be used for 1). However, it is doubtful |
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| FUGACITIES OF THE LAYERED SERIES OF THE SKAERGAARD INTRUSION, EAST GREENLAND l\IOTOAKI SATO* and l\IARIANO VALENZA...separates from the Layered Series of the Skaergaard intrusion have been measured between 800 ° ;rnd 1200...strongly to the carbon control of the £02 of the Skaergaard magma during the early stages of crystal lization...lization. It is probable that the low f02 of the Skaergaard magma and the ensuing iron-enrichment differentiation...preserved, and studied layered intrusions, the Skaergaard intrusion provides material ideally suited for the |
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| Coexisting Mafic Minerals from the Alkaline Dimaussaq Intrusion, South Greenland1 fcyLOTTE MELCHIOR LARSEN Institute...17 July 1975) (WITH ONE PLATE) Trie Ufmaussaq intrusion consists of an augite syenite shell and a central...fugacity and silica activity and the stability of fayalite and Na-poor pyroxenes in over- and undersaturated...in the mafic minerals it is inferred that the intrusion formed from at least three separate pulses of...investigations, classical examples of which are the Skaergaard pyroxenes (Brown, 1957; Brown & Vincent, 1963) |
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| crystallizing in the later stages of the Skaergaard intrusion. INTRODUCTION A LTHOUGH pyroxene-bearing...hedenbergite granophyre, E.G. 3047 from the Skaergaard intrusion, but the analyses of the rocks show that... (Mull Memoir, p. 20.) 4. Augite-granophyre, intrusion, S. 30° E. of Grigadale, Ardnamurchan. Anal.:...ferrohedenbergites from the Skaergaard intrusion, and with certain others. The Skaergaard pyroxene analyses 1-4...Deer, 1939, p. 240-248; Muir, 1951). In this intrusion, two distinct trend-lines for these late pyroxenes |
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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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| magma -a further study of the Skaergaard intrusion, L. R. East Greenland and R. WAGER* L. MITCHELL...131 ... ... ... Previous work on the Skaergaard intrusion ... Methods used and the accuracy of the...inclusions composition of the rocks of the intrusion of the metamorphic complex . .. ... ... .... .. . ... .. . ... during cooling of the intrusion ... .. . . . . . . . . . . . . ... 1: The Skaergaard &end of ~e~ntiation 2. Comparison of the trace elements in the Skaergaard and other |
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| gold in rocks and minerals of the Skaergaard intrusion, East Greenland Department E. A. VIKâCEXT and J...suite of rocks from the strongly differentiated Skaergaard gabbroic complex and in some of the constituent...la.yered gabbroic complex of the Skaergaard intrusion in East Greenland, and discusses some aspects of...account of t,he geology and petrology of the Skaergaard intrusion has been given by WAGER and DEER (1939)...number of significant trace elementsa in the intrusion has been described by MâAGER and MITCHELL (1951) |
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| M I N E R A L S O F T H E S K A E R G A A R D INTRUSION E.A. VINCENT and G. NIGHTINGALE Department of...1974. Gallium in rocks and minerals of the Skaergaard intrusion. Chem. Geol., 14: 63--73. Gallium has been...analysis in a suite of 26 rocks from the Skaergaard intrusion and in the separated cumulus minerals of...elements in the rocks and minerals o f the Skaergaard intrusion was s u m m a r i s e d b y Wager and B...o f gallium in the rocks and minerals o f the intrusion was d e t e r m i n e d b y the early w o r k |
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| Petrology of the Upper Border Series of the Skaergaard Intrusion. J Petrol 25:185-212 Park CF (1961) A magnetite...element variation of the Layered Series of the Skaergaard intrusion and a re-estimation of the average composition...investigations in East Greenland,. Part III. The Petrology of the Skaergaard Intrusion, Kae.g~rdt~gssuaq,... East Greenland. Meddr Gronlamt 11)5:1-352 Williams RJ (1971) Reaction constants in the system Fe--MgOS[O2...Fe--MgOS[O2 02 : intensive parameners in ti~e Skaergaard Intrusio,n,. East Crree~land. Am J Sci 271:132-146 |
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| Northern Ireland from the Skaergsard intrusion, ~aminerals East Greenland E. A. VINCENT and L. I. BILEFIELD...8 suite of rocks from the Sksergssrd intrusion, East Greenland, snd in the sepsrsted miner& from one...series of rooks and minerals from the Skaergaard intrusion, East Greenland-a series which, although limited... %ESULTS ATJD DISCUSSION; The results of the Skaergaard rock analyses are given in Table 2. The chilled...(4507) taken to represent the initial magma of the intrusion (WAQER and DEER, 1939; WAGER, VINCENT and SYMALES |
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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...granophyric zone with quartz, orthoclase, plagioclase, fayalite, hastingsite, apatite, ± pyroxene. The zones are...intercumulus liquids which were derived from the Skaergaard parental melts. The pegmatitic melts were buoyant...essentially late magmatic products derived from the Skaergaard melt and, therefore, provide us with unique objects |
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| Springer-Verlag1986 Hydrothermal clinopyroxenes of the Skaergaard intrusion Craig E. Manning and Dennis K. Bird Department...pyroxenes during the subsolidus cooling of the Skaergaard intrusion. Secondary, hydrothermal clinopyroxenes...earliest veins throughout the Layered Series of the intrusion, and occur rarely in late veins that, in some...combined with numerical transport models of the intrusion, suggest that vein clinopyroxenes could have formed...in the Layered Series. Introduction The Skaergaard intrusion represents the uplifted and eroded roots |
