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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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| 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 |
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| trace elements in the rocks o f the Skaergaard intrusion, Greenland. By L. R. WAO~.R, Sc.D., F.G.S. Department... 1. Introduction. H E Skaergaard intrusion of Kangerdlugssuak, East Greenland (68 ~ 10' N., 31 ~ 40 W...interest of work on the layered series of the Skaergaard intrusion. I t was decided that this work should consist...Whilst the variety among the rocks of the Skaergaard intrusion is largely due to differentiation by fractional...of the Skaergaard intrusion and this rock, typified by specimen TRACE ELEMENTS IN SKAERGAARD ROCKS |
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| crystallizing in the later stages of the Skaergaard intrusion. INTRODUCTION A LTHOUGH pyroxene-bearing...similar to the basic hedenbergite granophyre, E.G. 3047 from the Skaergaard intrusion, but the analyses... (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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| 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...the pyroxenes range from ferrosalite through hedenbergite to aegirine, the amphiboles from hastingsite...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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| sequence of the Upper Border Series of the Skaergaard Intrusion: revised subdivision and implications for...crystallization sequence of the Skaergaard Intrusion, east Greenland, remains in debate. In particular...and finally ferrobustamite (now inverted to hedenbergite). This crystallization sequence represents extreme...plagioclase cores in the three series imply that the Skaergaard magma chamber solidified by in situ crystallization...homogenous, convecting magma body. Keywords Skaergaard Layered intrusion Crystallization sequence Magma |
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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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| Compositional Relationships of Some Coexisting Skaergaard Pyroxenes Leslie C. Coleman Department of Geological...and Ca-poor pyroxenes from rocks of the Skaergaard intrusion indicate that their compositional relationships...tie-line for inverted pigeonite is further from the hedenbergite-ferrosilite join of the quadrilateral than that...simultaneous crystallization of two pyroxenes from the Skaergaard magma there was similar partitioning of Mg and...connecting compositions of coexisting pairs of Skaergaard pyroxenes. Their discussions suggest that tie-lines |
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| The clinopyroxenes of the Slcaergaard intrusion, eastern Greenland. By I. D. MWR, B.A., Ph.D., F.G.S. Department...on the analyses of two pyroxenes from the Skaergaard intrusion and both of these are now known to be somewhat...somewhat unusual types. The Skaergaard intrusion which is a strongly fractionated gabbroic complex is...twenty-three analyses of the pyroxenes from this intrusion are now available. Using nineteen of these, new...(fig. 1) for the Skaergaard clinopyroxenes. The Skaergaard intrusion of east Greenland, Tertiary in age |
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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...in rocks and minerals of the Skaergaard (Analyst J. VAN R. SMIT) intrusion Actual determinations (p.p |
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| (1957) have studied the pyroxenes from the Skaergaard intrusion, a slowly cooled representative of tholeiitic...optical properties of a clinopyroxene from a Skaergaard transgressive granophyre, and Anwar (1955) and...and augite are green as macroscopic grains (cf. Skaergaard, 312 I. S. E. CARMICHAEL—PYROXENES AND brown...G. 151. Ferroaugite from pitchstone margin of intrusion, Skruthur, east Iceland. P. 258. Pitchstone. P... 258. Ferroaugite from pitchstone margin of intrusion, Bondolfur, east Iceland. P. 186. 8 B Ferrohortonolite |
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| (1957) have studied the pyroxenes from the Skaergaard intrusion, a slowly cooled representative of tholeiitic...optical properties of a clinopyroxene from a Skaergaard transgressive granophyre, and Anwar (1955) and...and augite are green as macroscopic grains (cf. Skaergaard, 312 I. S. E. CARMICHAEL—PYROXENES AND brown...G. 151. Ferroaugite from pitchstone margin of intrusion, Skruthur, east Iceland. P. 258. Pitchstone. P... 258. Ferroaugite from pitchstone margin of intrusion, Bondolfur, east Iceland. P. 186. 8 B Ferrohortonolite |
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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...pyroxene from a diopside-augite to a member of the hedenbergite-clinoferrosilite solid solution series.2 Hypersthene...important constituent of the earlier rocks of the intrusion and varies from Fsal in the lowest exposedrocks |
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| acmite, jadeite, spodumene, augite, diopside, hedenbergite, and clinoenstatite had similar structures typified...(2Vy) but the range of values from diopside to hedenbergite is small and so this property is of little help...the pyroxenes is compared with that in the Skaergaard intrusion (Muir, 1951). A pyroxene from the Tertiary... Clinopyroxenes of the Garbh Eilean Sill 25 diopside-hedenbergite series which crystallized in cotectic relationship...with the clinoproxene trend in the Skaergaard intrusion, east Greenland. 1, pyroxene (1) ; 2, pyroxene (17) |
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| ZINC IN ROCKS AND MINERALS FROM THE SKAERGAARD INTRUSION, EAST GREENLAND C.B. DISSANAYAKEand E.A. VINCENT...Zinc in rocks and minerals from the Skaergaard intrusion, east Greenland. Chem. Geol., 9:285 -297. Zinc has...suite of rocks and minerals from the Skaergaard intrusion, east Greenland, by atomic absorption spectrophotometry...layered basic igneous complexes, the Skaergaard intrusion of east Greenland has been the most extensively studied...magma. For a detailed description of the Skaergaard intrusion, the reader is referred to Wager and Brown |
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| Pyroxenes of the Bushveld Intrusion, South Africa by F. B. ATKINS Department of Geology and Mineralogy...inverted pigeonites from the Bushveld layered basic intrusion. The twenty-three analyses now available are believed...trends are remarkably similar to those of the Skaergaard pyroxene series, but the Bushveld sequence is...most complete known for a single fractionated intrusion. The compositional and other variations of the...accumulation from a slowly cooled and fractionated intrusion of tholeiitic basalt magma. The slight but significant |
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| During chemical evolution of augite in the Skaergaard intrusion Fe2 + initially fills both the M (1) and...titanaugute, subcalcic augite, pigeonite, Skaergaard intrusion, Greenland. Introduction Generally, the formula...End-members Augite, C2/c Fassaite, C2/c Diopside Hedenbergite CaMg(Si2O6) CaFe(Si2O6) 64 – 64 63 3 66...A. Zolotarev plot compositions of diopside, hedenbergite, augite, aegirine, aegerineaugite in terms of...pyroxenes from the Skaergaard layered igneous complex, Greenland. In the literature, this intrusion is one of |
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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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| analyzed augitesand ferroaugites from theSkaergaard intrusion are presented. The variation of the unit-cell...wastentatively sug(diopside-clinoenstatite-ferrosilite-hedenbergite) gested, and the degree of change was illustrated...by sections across the field from diopside to hedenbergite, and from diopside to pigeonite. Kuno (1955)... 16 G. M, BROWN clinopyroxenesfrom the Skaergaard intrusion, which showed continuous replacement of...available. Points 1 to 11 refer to newly-measured Skaergaard specimens (corrected for exsolution), while points |
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| gabbros from the Kap Edvard Holm Complex, East Greenland, show no significant variation of temperature...temperature with structural height in the intrusion, while those of Skaergaard give temperatures which do not have...octahedral sites, M 1 and M2. If pure diopside and hedenbergite are completely ordered with respect t o Ca on...to have (a) thermodynamic data for diopside, hedenbergite, forsterite and fayalite (b) values for wFeMg...thermodynamic data exist for hedenbergite. The Cp equation and S~ for hedenbergite were estimated using the |
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| gold in rocks and minerals of the Skaergaard intrusion, East Greenland Department E. A. VIK’CEXT 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 M’AGER and MITCHELL (1951) |
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| IN THE EAST L. R. WAGER, No. 8 SKAERGAARD INTRUSION, GREENLAND E. A. VINCENT AND A. A. SMALES...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...sulphurcontent. INTRODUCTION TI-IESkaergaard intrusion is a layeredbasiccomplex in whichstrongcrystal...couldbe SULPHIDES IN SKAERGAARDINTRUSION, E. GREENLAND 857 detectedin hand specimens.Thesewere the |
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| inNorthern Ireland Rare-earth elements in the Skaergaard intrusion LARRY A. HASKIN and MARY A. HASKIN Department...Ah&&-The chilled marginal gabbro of the Skaergaard intrusion, East Greenland, is very similar in absolute and...correlated with variations in feldspar oontents of the intrusion. It does not appear to be possible to explain...of a basaltic magma is the Skaergssrd intrusion of East Greenland. A detailed petrologic study was fist...contents of the REE in rocks from the Skeergaard intrusion; to correlate, if possible, the changes in RE |
 | 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 |
