 | | Journal (article/letter/editorial) | | Garnet Peridotite at Kalskaret near Tafjord, South Norway D. A. CA~swm5,* Grant Institute of Geology, University...district with respect to the south-western seaboard of Norway B. Outline o] the Problem under Investigation The...The garnet pcridotites from both Kalskaret and Almklovdalen show pronounced mineralogical heterogeneity...Kalskaret and Almklovdalen mineral assemblages are tabulated. Specimens N69, N70 and N71 from Lien, Almklovdalen...Hence the hypothesis that the Kalskaret and Almklovdalen garnet peridotites simply represent local segregations |  | | Journal (article/letter/editorial) | | garnet peridotites at the nearby Kalskaret and Almklovdalen localities. Instead they show striking mineralogical...certain European orogenic belts, in particular in Norway, Czechoslovakia and Switzerland. Recently, several...formed in the Upper Mantle bringing up xenocrysts of pyrope. On the other hand, Kopecky & Sattran (1966) and...gneiss region of southern Norway (see Eskola 1921). These are at Almklovdalen in Nordfjord and Tafjord...OterSy (62~ 6~ on the north side of Moldefjord in Romsdal district, some 45 miles N.W. of Tafjord. Lappin |  | | Journal (article/letter/editorial) | | occur among gneisses in the Tafjord district of Norway are cold intrusions emplaced as crystalline rocks...representing material from the Tafjord and Almklovdalen districts of Norway, a garnetiferous peridotite mass near...peridotite nodules in basalts. The garnet-peridotites of Norway, Switzerland and South Africa are believed to be...3. Peridotites and garnet peridotites of South Norway and Switzerland, e.g. Eskola (1921), Dal Vesco...Garnet-bearing peridotites are known from orogenic zones in Norway and many other parts of Central Europe. Eskola |  | | Journal (article/letter/editorial) | | Petrogenesis of the Lien peridotite and associated eclogites, Almklovdalen, Western Norway L. G. MEDARIS,...Petrogenesis of the Lien peridotite and associated eclootes, AlmHo~dalen, Western Norway. Lithos 13, 339-353...of minerals in garnet-bearing assemblages in the Lien peridotite define a retrograde metamorphic trend...the retrcgnale trend of the ultramafic rocks. The Lien peridotite appears to have been derived from the...sequence of the Basal Gneiss region in western Norway. Three modes of origin have been proposed for these |  | | Journal (article/letter/editorial) | | garnet peridotites in the Western Gneiss Region of Norway L.G. Medaris, Jr. Department of Geology and Geophysics...USA Abstract. In the Western Gneiss Region of Norway are found numerous peridotite lenses which have...number of localities in Europe, including western Norway, the Bohemian massif, the Lepontine Alps, Ronda...peridotites have emerged from studies of these rocks in Norway, where peridotites, locally garnetiferous, are...O'Hara (1965a, b) at Almklovdalen and Kalskaret, Lappin (1966) at Almklovdalen, and Carswell (1968a, |  | | Journal (article/letter/editorial) | | Exposed Peridotites in the Western Gneiss Region, Norway 1 ARC NATIONAL KEY CENTRE FOR GEOCHEMICAL EVOLUTION...localities in the Western Gneiss Region (WGR) of western Norway; garnet peridotites typically occur as discrete...pyroxenites and eclogites. The dunites of the large Almklovdalen peridotite body have extremely depleted compositions...mantle; Proterozoic mantle; Western Gneiss Region, Norway; mantle metasomatism; garnet peridotite *Corresponding...across the Western Gneiss Region (WGR) of western Norway (Fig. 1) and typically occur as small volumes |  | | Journal (article/letter/editorial) | | of Geology, UniÕersity of Tromsø, Tromsø 9000, Norway d Department of Earth Sciences, UniÕersity of Oxford...province’’ in the Stadlandet area of coastal SW Norway ŽFig. 1.. Subsequently, Wain Ž1997a; b. expanded...approximately 5 = 10 4 km2 along the coast of southwest Norway between Bergen and Trondheim ŽFig. 1.. The WGR...facies metamorphism. M — Maløy; Mo— Molde; R — Romsdal; S — Stryn; F — Førde; D — Dalsfjord. ˚ Location...barroisite eclogite stage. In outer Norfjord and in Romsdal Ž40 km SE of Molde; Fig. 1., an early amphibolite |  | | Journal (article/letter/editorial) | | microstructures in garnet from the Almklovdalen peridotite, SW Norway Dirk Spengler, Herman L.M. van Roermund...microstructures in garnet from the Almklovdalen peridotite, SW Norway, LITHOS, https:// doi.org/10.1016/j...microstructures in garnet from the Almklovdalen peri- 3 dotite, SW Norway 4 Dirk Spengler, Herman L. M...Roermund, Franziska Scheffler 5 6 7 8 9 10 • Almklovdalen majoritic garnet precursors imply Archaean crystallisation...microstructures in garnet from the Almklovdalen peridotite, SW Norway 13 Dirk Spenglera,∗, Herman L. |  | | Journal (article/letter/editorial) | | Mineralogisk-Geologisk Museum, Sarsgate 1, N-Oslo 5, Norway. *Present address: Department of Geology, University...D' in Fig. 1). Most of these are found in north Norway, especially east of Seiland, although some occur...'peridotites and serpentinites' on the geologic map of Norway (Holtedahl & Dons 1960). Brief and usually inadequate...LITHOS 10 (1977) "0 SIMPLIFIED GEOLOGICALMAP OF NORWAY SHOWING THE TYPE AND DISTRIBUTION OF SOME ALPINE-TYPE.... . . . . . . J Simplified geological map of Norway showing the type and distribution of the alpine-type |  | Brueckner, H.K., Carswell, D.A., Griffin, W.L., Medaris, L.G., Van Roermund, H.L.M., Cuthbert, S.J. (2010) The mantle and crustal evolution of two garnet peridotite suites from the Western Gneiss Region, Norwegian Caledonides: An isotopic investigation. Lithos, 117 (1) 1-19 doi:10.1016/j.lithos.2010.01.011 | Journal (article/letter/editorial) | | the Western Gneiss Region (WGR) of southwestern Norway (Fig. 1). Many of them have lost their pre-orogenic...garnet-bearing rocks at several localities (Almklovdalen, Aldalen, and Otrøy). The garnet-bearing peridotite...lhz pyr 15 25 40 10 20 50 15 15 5 60 40 5 Almklovdalen SU1G SU1J SU1K SU1R SU99A SU98B Ah-1 Ar-8 Ag-11...GM GM GM HKB HKB HKB HKB HKB HKB Lien Lien Lien Lien Lien Lien Lien Rødhaugene Rødkleiva Rødkleiva Gusdal...Bardane peridotite, Brueckner et al., 2002; CW Almklovdalen peridotite, Beyer et al., 2004). In one case |  | | Journal (article/letter/editorial) | | : enstatite 2MgrAlSirO,, * 4MgrSiOo + 8HrO. pyrope forsterite (l) fluid Delany and Helgeson (1978)...and aqueousfluid at pressuresbelow 2.0 GP4 that + pyrope + forsterite + spinel + HrO (Staudigel and Schreyer...forsterite + dotite field, it breaks down to spinel, pyrope, forsterite, spinel + H,O (Delany and Helgeson...94.1 4.379 o.2349 0.107 -543 - 1.906 16.0 3.2 Pyrope -6284.49 266.3 11.327 0.5450 2.068 -8331 -2.283...Petrogenesisofthe Lien peridotite and associated eclogites,Almklovdalen, westem Norway. Lithos, 13, 339-353 |  | | Journal (article/letter/editorial) | | "Basal Gneiss C o m p l e x " [1 ] o f southern Norway contains a large n u m b e r o f unusually fresh... Three large masses, at OtrCy, Taf]ord, and Almklovdalen, respectively, contain layers and lenses o f...map of the Basal Gneiss Complex of southwestern Norway showing the distribution of ultramafic rocks. Modified...] suggestion that the eclogite-facies rocks of Norway had a preCaledonian origin. Rubidium and strontium...garnetiferous ultramafic assemblages at 21 Otr$y, Almklovdalen, and Tafjord (Fig. 1). Their very low * 7 Sr/’ |  | | Journal (article/letter/editorial) | | garnets from pcridotites of the Caledonides of Norway and the Variscides of Poland show zoning patterns...concentrations in garnets from the Almklovdalen and Sandvika peridotites, Norway, may be relicts of the original...bimineralic assemblages of omphacitic clinopyroxene and pyrope-rich garnet. But other rocks, including metasediments...I / . . 1991) from the Western Gneiss Region of Norway. The garnet peridotite data exclude ages from Stagc...Pin & Vielzeuf, 1988). The two peridotites from Norway are from the Western Gneiss Region, a basement |  | | Journal (article/letter/editorial) | | Garnet-peridotite bodies enclosed in gneisses in the Alps and Norway yield pressure estimates in the range 20-30 kilobars...the 'country-rock' orthopyroxene-eclogites from Norway give pressure estimates (18 + 8 kb) which do not...T #C 900 1000 600 800 700 900 1000 T *C NORWAY-Q* PERIDOTITE OPX ECLOGUE ALPINE RON DA PERIDOTITE...ultramafic bodies in crustal gneisses from the Alps and Norway, the Ronda massif, and Norwegian country-rock eclogites...garnet-pyroxenites occur in the gneiss terrain of Norway in isolated boudins which may also contain quartz- |  | | Journal (article/letter/editorial) | | isotope analyses of the Sandvik ultramafic body, Norway Received: 10 January 2005 / Accepted: 5 July 2005...rocks at Sandvik, Western Gneiss Region (WGR), Norway, originated from depleted Archean lithospheric...(P–T–t–x). 132 The Western Gneiss Region (WGR) of Norway, which is composed mainly of amphibolite- to granulitefacies...small outcrop at Sandvik, Island of Gurskøy, WGR, Norway (Fig. 1), to understand the chemical and isotopic...7 in pyroxenites vs. Fo 92.4 in peridotite; the pyrope content in garnet is 74.2 in pyroxenites vs. 71 |  | | Journal (article/letter/editorial) | | opx=orthopyroxene; P=pressure, in kilobars; py=pyrope; R--universal gas constant, 1.9872; ASr~ change...treated as an ideal binary solid solution between pyrope and almandine, in accordance with recent experimental...orthopyroxene may be written as: apy -~Mg3A12Si3012 +89 pyrope ferrosilite aOpX opx 2 f~ --(1--XMg)(1--X M1)...reaction (1). In the CFMAS system, the activities of pyrope and almandine in garnet will be modified by the...approaching equilibrium K D from the high-K o side. Pyrope + ferrosilite seeded mixes were used in some runs |  | | Journal (article/letter/editorial) | | transitions within the Kvamsray pyroxenite complex, west Norway: a case study of disequilibrium MA1 BRITT E. MORK...disequilibrium; high P-T metamorphism; Kvamsoy, west Norway; plagioclase breakdown; textures List of mineral...=olivine =opaque = orthopyroxene = plagioclase =pyrope =quartz =spinel = spessartine = zoisite I NTRO...conditions have affected the gneiss region of western Norway, there are numerous examples of preserved mafic... Ic. High P- T metamorphic transitions, west Norway 247 U C rn Felsjc migmatite gneiss Eclogite |  | | Journal (article/letter/editorial) | | coesite is abundant in the Western Gneiss Region, Norway, and ending with the numer ous and diverse terranes...Proterozoic gneisses of the Western Gneiss Region in Norway ( p a r a u t o c h t h o n ) a n d in m i g m...Brueckner and Medaris (1998). Western Gneiss Region, Norway. Two compositionally distinct types of garnet peridotite...from peridotite on the island of Otr0y, western Norway, and interpreted the lamellae to have formed by...46.7 4 4 4 5 5 5 5 5 Kokchetav 733 (30) 6 Norway, WGR, Proterozoic Kalskaret, pd 891 44.0 41.6 Kalskaret |  | | Journal (article/letter/editorial) | | Ca-components (from 23.6 up to 39.1%) (Table 2). The pyrope content varies from 7.1 to 17.4% and the almandine...increase. Garnet with the lowest Ca and highest pyrope content form a rim of a garnet in sample B-384-a...Kazakhstan (Luts, 1974; Shatsky and Sobolev, 1985), Norway (Krogh, 1980), Germany (O'Brien, 1989), France...eclogites in the vicinity of Rodhquegen, Almklovdalen, West Norway. Nor. Geol. Tidskr., 61: 249-260. Caruba...surrounding gneisses in the Kristiansund area, Western Norway. Contrib. Mineral. Petrol., 75" 387393, Liegedis |  | | Journal (article/letter/editorial) | | examples. In the Bumandsfjord area of Seiland, north Norway, there is clear evidence that a high-temperature...granulite terrane in the Lofoten islands, north Norway; it is 500 krn z in outcrop area and shows 320...phases in the undersaturated anorthosites of central Norway (Griffin 1971a, b, 1972); the pyroxenes in the...and omphacites. The garnets produced are rich in pyrope and grossular. It seems clear that eclogites may...explain the regional occurrence of such collars in Norway, since the process ;.s a general one, relatively |  | | Journal (article/letter/editorial) | | Alpine-type bodies within the Western Gneiss Region of Norway have had a prolonged, 7-stage, evolutionary history...bodies occur within the Western Gneiss Region of Norway (Carswell et al., 1983). The Fe-Ti type occurs...garnetiferous peridotite assemblages in these west Norway bodies are only rarely preserved. However, relict...+ clinopy- r o x e n e 2 + garnet~ The west Norway garnet-bearing peridotites characteristically have...are similar to those recorded in many other west Norway garnet peridotite samples (Carswell et al., 1983; |  | | Journal (article/letter/editorial) | | Kingdom, and the Mineralogisk-GeoloN~sk Museum, Oslo, Norway Calculation of Equilibration Conditions for Garnet...2533-2546. England, J. L., 1964: The system enstatite-pyrope. Carnegie Inst. Washington Year Book 63,157-161...Precambrian continent-continent collision in Western Norway. Nature 267, 17-19. Lappin, M. A., Smith, D. C...the Basal Gneisses in the Selje District, Western Norway. J. Petrol. 19, 530-584. Lindsley, D. H., Dixon...Ringwood, A. E., 1964: The natural system enstatite-pyrope. Carnegie Inst. Washington Year Book 63, 161-163 |  | | Journal (article/letter/editorial) | | I1 garnet in lherzolite is a high-pyrope variety, up to 69 mol% pyrope component (Prphl.hl)Alm,x.23 Grs...111 garnet in wehrlite contains a slightly lower pyrope component (Prp,, Alm30 Grs,,). For pyroxenites...coarse-grained garnet of stage I1 contains a higher pyrope component (Prp,, Aim,, Grs,,) than the fine-grained...cxsolved Grt + 90% host clinopyroxcnc. higher pyrope component that increases with decreasing grossular...almandine (about 19 mol%); stage 111 garnet has lower pyrope contents and the highest amount of grossular (Prp |  | | Journal (article/letter/editorial) | | Meta-anorthosite and related jotunites, Western Gneiss Region, Norway Spencer J. Cotkin Department of Geological Sciences...in the high-grade Western Gneiss Region (WGR) of Norway, and is adjacent to the 1.52 Ga Flat&et quartz...similar age (Tobi and Touret, 1985; Ashwal, 1993). In Norway, many anorthosite complexes have received considerable...to The Western Gneiss Region (WGR) of coastal Norway is the deepest exposed level of the Scandinavian...unzoned and contains approximately 62% almandine, 23% pyrope, 14% grossular, and 1% spessartine components (Table |  | | Journal (issue) | | ist, bildet er fast nie gute Kristalle. Fast alle Pyrope sind eingewachsene Körner beziehungsweise abgerollte...Rlzodof;th bezeichnet. Im Edelsteinhandel werden Pyrope aus Südafrika auch fälschlich als „Kaprubin" bezeichnet...Serpentine vo r. die bis über zentimetergro ße Pyrope eingewachsen enthalten. Österreich: Im Mitterbachgraben...sich mit bis 97 Mol% Pyropanteil um die reinsten Pyrope, die in der Natur vorkommen. Sie stammen aus rund...importierte Almandine aus dem Zillertal oder um Pyrope aus Südafrika. Schottl a nd: An dem - fälschlich |
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