 | | Journal (article/letter/editorial) | | online 11 March 2016 Water incorporation in omphacite: concentrations and compositional relations in...in ultrahigh-pressure eclogites from Pohorje, Eastern Alps HENRIK SKOGBY1,*, MARIAN JANĂK2 and IGOR BROSKA2...Abstract: Omphacite in ultra-high pressure (UHP) eclogites from the Pohorje Mountains in Slovenia, south-eastern...from 530 to 870 ppm H2O. Characterization of omphacite composition by EMP analysis and Mössbauer spectroscopy...quartz rods in some samples indicates that primary omphacite contained a larger Ca-Eskola component. Extrapolation |  | JanĂĄk, Marian, Uher, Pavel, Ravna, Erling Krogh, Kullerud, KĂ„re, Vrabec, Mirijam (2015) Chromium-rich kyanite, magnesiostaurolite and corundum in ultrahigh-pressure eclogites (examples from Pohorje Mountains, Slovenia and TromsĂž Nappe, Norway) European Journal of Mineralogy, 27 (3) 377-392 doi:10.1127/ejm/2015/0027-2436 | Journal (article/letter/editorial) | | ultrahigh-pressure eclogites (examples from Pohorje Mountains, Slovenia and TromsĂž Nappe, Norway) MARIAN JANAÌK1...of Ljubljana, AsÌkercÌeva 12, 1000 Ljubljana, Slovenia Abstract: Chromium-rich kyanite, magnesiostaurolite...with garnet peridotite and serpentinite from Pohorje Mountains (Eastern Alps) and the TromsĂž Nappe (Northern...Cr2O3 in kyanite and magnesiostaurolite from the Pohorje Mts. (17.0 and 15.0 wt%, respectively) are the...Russia Westland, New Zealand Pohorje, Slovenia Pohorje, Slovenia Pohorje, Slovenia TromsĂž, Norway TromsĂž, Norway |  | Vrabec, Mirijam, JanĂĄk, Marian, Froitzheim, Nikolaus, De Hoog, Jan C.M. (2012) Phase relations during peak metamorphism and decompression of the UHP kyanite eclogites, Pohorje Mountains (Eastern Alps, Slovenia) Lithos, 144. 40-55 doi:10.1016/j.lithos.2012.04.004 | Journal (article/letter/editorial) | | of the UHP kyanite eclogites, Pohorje Mountains (Eastern Alps, Slovenia) Mirijam Vrabec a,â, Marian JanĂĄk...University of Ljubljana, AĆĄkerÄeva 12, 10000 Ljubljana, Slovenia Geological Institute, Slovak Academy of Sciences...Kyanite eclogites Thermodynamic modeling PâT path PohorjeâEastern Alps a b s t r a c t Phase relations among...kyanite eclogite were investigated in the Pohorje Mountains of the Eastern Alps. Ultrahigh-pressure metamorphism...contain a peak metamorphic assemblage of garnet, omphacite, kyanite and phengite. Pyrope-rich garnet is unzoned |  | Miller, Christine, Mundil, Roland, Thöni, Martin, Konzett, JĂŒrgen (2005) Refining the timing of eclogite metamorphism: a geochemical, petrological, Sm-Nd and U-Pb case study from the Pohorje Mountains, Slovenia (Eastern Alps) Contributions to Mineralogy and Petrology, 150 (1) 70-84 doi:10.1007/s00410-005-0004-0 | Journal (article/letter/editorial) | | Sm-Nd and U-Pb case study from the Pohorje Mountains, Slovenia (Eastern Alps) Received: 20 December...Abstract High-pressure metamorphism in the Pohorje Mountains of Slovenia (Austroalpine unit, Eastern Alps) aïŹected...of the eclogites in the Pohorje Mountains. The presence of garnet, omphacite and quartz inclusions in... loop for maïŹc and pelitic lithologies of the Pohorje area and a late Cretaceous high-pressure event...elements of the major eclogite minerals garnet and omphacite, and it has been demonstrated that the Sm-Nd isotope |  | Sandmann, Sascha, Herwartz, Daniel, Kirst, Frederik, Froitzheim, Nikolaus, Nagel, Thorsten J., Fonseca, RaĂșl O.C., MĂŒnker, Carsten, JanĂĄk, Marian (2016) Timing of eclogite-facies metamorphism of mafic and ultramafic rocks from the Pohorje Mountains (Eastern Alps, Slovenia) based on LuâHf garnet geochronometry. Lithos, 262. 576-585 doi:10.1016/j.lithos.2016.08.002 | Journal (article/letter/editorial) | | and ultramafic rocks from the Pohorje Mountains (Eastern Alps, Slovenia) based on Lu-Hf garnet geochronometry...and ultramaïŹc rocks from the Pohorje Mountains (Eastern Alps, Slovenia) based on Lu-Hf garnet geochronometry...and ultramafic rocks from the Pohorje Mountains (Eastern Alps, Slovenia) based on Lu-Hf garnet geochronometry...733815 Fax: +49 228 732763 Keywords: Eastern Alps; Pohorje; Lu-Hf geochronology; Eo-Alpine metamorphism; eclogite...MANUSCRIPT Abstract The metamorphic series of the Pohorje Mountains represents a part of the Eastern Alpine T |  | | Journal (article/letter/editorial) | | eclogite-facies Cr-spinel-bearing gabbroic cumulates, Pohorje Massif, Eastern Alps Christoph A. Hauzenberger1...cumulates containing Cr-spinel from the Pohorje Massif, Eastern Alps, Slovenia. In these rocks, turquoise-colored...plagioclase or quartz react to Crkyanite, ±garnet, ±omphacite. In contrast, the formation of kyanite associated... Cr-rich corundum, eclogite facies cumulates, Pohorje Massif, Eastern Alps Introduction Kyanite is a...of the EHB is represented by eclogites of the Pohorje massif (e.g., Ippen 1892; HinterlechnerRavnik and |  | | Journal (article/letter/editorial) | | Geochemistry and metamorphic evolution of the Pohorje Mountain eclogites from the easternmost Austroalpine...Austroalpine basement of the Eastern Alps (Northern Slovenia) Raffaele Sassi a,*, Claudio Mazzoli a,b, Christine...quartzo-feldspathic gneisses in the Pohorje Mountains, Northern Slovenia, that form the easternmost Austroalpine...clinopyroxene â plagioclase intergrowths after omphacite, (ii) replacement of kyanite by corundum â plagioclase...this study indicate that Koralpe, Saualpe and Pohorje high-pressure rocks represent former MORB-type |  | | Journal (article/letter/editorial) | | metapelites from HP/UHP metamorphic terrane (Pohorje Mountains, Eastern Alps) Vratislav Hurai âą Marian JanaÌk...HP/UHP metamorphic terrane of Pohorje Mountains in the Eastern Alps, Slovenia. Retrograde PâT trajectory...Garnet HP/UHP metamorphism Retrogression Pohorje Mountains Introduction Communicated by J. Hoefs. Electronic...Metamorphic evolution of metapelites from the Pohorje Mountains in the Eastern Alps was described in this...metapelitic gneiss from Pohorje Mts. Geological setting The Pohorje Mountains represent the most deeply |  | THĂNI, M., MILLER, C., BLICHERT-TOFT, J., WHITEHOUSE, M. J., KONZETT, J., ZANETTI, A. (2008) Timing of high-pressure metamorphism and exhumation of the eclogite type-locality (KupplerbrunnâPrickler Halt, Saualpe, south-eastern Austria): constraints from correlations of the SmâNd, LuâHf, UâPb and RbâSr isotopic systems. Journal of Metamorphic Geology, 26 (5) 561-581 doi:10.1111/j.1525-1314.2008.00778.x | Journal (article/letter/editorial) | | areas of the Saualpe (SE Austria) and Pohorje Mountains (Slovenia). Mg-rich eclogites derived from early...equilibration, whereas SmâNd multifraction garnetâomphacite regression for a low-Mg eclogite from Kupplerbrunn...Kupplerbrunn yields 88.4 ± 4.7 Ma for the garnetâ omphacite pair. Two low-Mg eclogites from the Gertrusk locality...90.6 ± 1.0 Ma. A low-Mg eclogite from the Pohorje Mountains (70 km to the SE) gives a garnetâwhole-rock...the eo-Alpine high-pressure event in the SaualpeâPohorje part of the south-easternmost Austroalpine nappe |  | Hauke, Matthias, Froitzheim, Nikolaus, Nagel, Thorsten J., Miladinova, Irena, Fassmer, Kathrin, Fonseca, RaĂșl O. C., Sprung, Peter, MĂŒnker, Carsten (2019) Two high-pressure metamorphic events, Variscan and Alpine, dated by LuâHf in an eclogite complex of the Austroalpine nappes (Schobergruppe, Austria) International Journal of Earth Sciences, 108 (4) 1317-1331 doi:10.1007/s00531-019-01708-8 | Journal (article/letter/editorial) | | reached in the southeasternmost part, the Pohorje Massif in Slovenia, as indicated by thermobarometry (JanĂĄk...dated samples. a Mineral assemblage of PRI3 with omphacite, quartz, garnet, amphibole, ilmenite, epidote...assemblage of PRI4 containing omphacite, quartz, garnet, amphibole and rutile. Omphacite grains are locally transformed...amphibole, Bt biotite, Ep epidote, Grt garnet, Omp omphacite, Qtz quartz, Rt rutile, WM white mica (2016)...compositions Sample PRI3 contains garnet, Na-rich omphacite, amphibole, and some quartz as major as well as |  | JANAK, M., FROITZHEIM, N., VRABEC, M., KROGH RAVNA, E. J., HOOG, J. C. M. (2006) Ultrahigh-pressure metamorphism and exhumation of garnet peridotite in Pohorje, Eastern Alps. Journal of Metamorphic Geology, 24 (1) 19-31 doi:10.1111/j.1525-1314.2005.00619.x | Journal (article/letter/editorial) | | metamorphism and exhumation of garnet peridotite in Pohorje, Eastern Alps M . J A N AÌ K 1 , N . F R O I T...of Ljubljana, AsÌkercÌeva 12, 1000 Ljubljana, Slovenia 4 Department of Geology, University of TromsĂž...garnet-bearing ultramaïŹc rocks from the Pohorje Mountains in Slovenia. The garnet peridotites are closely...results suggest that garnet peridotites in the Pohorje Mountains experienced UHPM during the Cretaceous orogeny...formation. Key words: Alps; garnet peridotite; Pohorje; slab extraction; ultrahigh-pressure metamorphism |  | | Journal (article/letter/editorial) | | Springer-Verlag 2009 Abstract In the Kor-, Saualpe and Pohorje regions of the Eastern Alps eclogite bodies occur...on the eclogite from Pohorje, suggest that a PT gradient from Koralpe to Pohorje is likely. Introduction...plate rocks into the middle crust. The Kor-Saualpe-Pohorje region of the eastern Alps is one of the classic...and in its southernmost extensionâthe Pohorje massif of Slovenia (Fig. 1): While Janak et al. (2004) argue...argue for some 30 kbar in the Pohorje massif and 20 kbar in the Koralpe (thus inferring a field gradient |  | Miller, C., Thöni, M., Konzett, J., Kurz, W., Schuster, R. (2005) Eclogites from the Koralpe and Saualpe type-localities, Eastern Alps, Austria. Mitteilungen der Ăsterreichischen Mineralogischen Gesellschaft, 150. | Journal (article/letter/editorial) | | the Gleinalpe and south-eastwards into the Pohorje Mountains. These two ridges are separated by the Lavant...between 500 and 700 m, and by gently sloping mountains up to 2150 m high. Outcrops are few and restricted... Fig. 1a, b Tectonic map of the Saualpe-Koralpe-Pohorje area (a) and section in the northern part (b)....eo-Alpine (d) metamorphic grades in the SaualpeKoralpe-Pohorje area. 1.1. Lithological content and metamorphic...related to the Periadriatic magmatism occur in the Pohorje area. 1.2. Geodynamic and tectonic evolution The |  | Konzett, JĂŒrgen, Libowitzky, Eugen, Hejny, Clivia, Miller, Christine, Zanetti, Alberto (2008) Oriented quartz+calcic amphibole inclusions in omphacite from the Saualpe and Pohorje Mountain eclogites, Eastern AlpsâAn assessment of possible formation mechanisms based on IR- and mineral chemical data and water storage in Eastern Alpine eclogites. Lithos, 106 (3) 336-350 doi:10.1016/j.lithos.2008.09.002 | Journal (article/letter/editorial) | | calcic amphibole inclusions in omphacite from the Saualpe and Pohorje Mountain eclogites, Eastern AlpsâAn...locality/Eastern Austria (sample SKP31) and the Pohorje Massif/Slovenia (CM31/03 and CM15/01) using electron microprobe...calcic amphibole + quartz inclusions (COIs) in omphacite and to assess the relative importance of hydrous...(NAMs). Because of high modal amounts of 37â65%, omphacite is the major nominally anhydrous water carrier...SiO2-lamellae need not be related to a CaEs component in omphacite but may result from reactions of minor/accessory |  | | Journal (article/letter/editorial) | | inclusions (FIs) in high-pressure (HP) minerals like omphacite, garnet and kyanite represent the metamorphic...eclogites east of the Kreuzeck Mountains (Saualpe-Koralpe and Pohorje Mountains) show evidence for a MORB-origin...carbonic vapour Geological setting The Kreuzeck Mountains are part of the Austroalpine basement of the Eastern...stars characterize the Saualm-Koralm and Pohorje Mountains. of aqueous fluid inclusions using freezing-point...eclogite which shows the assemblage garnet ĂŸ omphacite ĂŸ tourmaline ĂŸ zoisite/epidote ĂŸ K-feldspar ĂŸ |  | JanĂĄk, Marian, Cornell, David, Froitzheim, Nikolaus, De Hoog, Jan C.M. Broska, Vrabec, Mirijam, Hurai, Vratislav (2010) Eclogite-hosting metapelites from the Pohorje Mountains (Eastern Alps): P-T evolution, zircon geochronology and tectonic implications. European Journal of Mineralogy, 21 (6) 1191-1212 doi:10.1127/0935-1221/2009/0021-1966 | Journal (article/letter/editorial) | | metamorphism Eclogite-hosting metapelites from the Pohorje Mountains (Eastern Alps): P-T evolution, zircon geochronology...of Ljubljana, AsÌkercÌeva 12, 10000 Ljubljana, Slovenia Abstract: Phase-equilibrium modelling, geothermobarometry...ultrahigh-pressure (UHP) metamorphic terrane of the Pohorje Mountains in the Eastern Alps. These eclogite-hosting...with that (93â91 Ma) determined earlier in the Pohorje eclogites from U/Pb zircon, Sm-Nd and Lu-Hf garnet-whole-rock...Harley, 2005; Miller et al., 2005, 2007). The Pohorje Mountains in the Eastern Alps are an important area |  | | Journal (article/letter/editorial) | | area (1.8 GPa=690 C), and the Saualpe-Koralpe-Pohorje domain (2.2â 2.7 GPa=750 C). Their tectonic...isotope equilibration is known mainly from garnetâomphacite pairs of meta-gabbroic eclogites, which often...HG HochgroÌssen, Sau Saualpe, Kor Koralpe, Poh Pohorje, Sieg Sieggraben unit, EZ Eclogite Zone (Tauern...Koralpe B⏠arofen, Hohl, Mauthnereck Krumbachgraben Pohorje Kebelj, Rogla geochronological method applied...follow Kretz (1983). Additional abbreviations: Omp omphacite, Phe phengite, Sym symplectite, wr whole rock |  | | Journal (article/letter/editorial) | | Austroalpine basement domains Koralpe, Saualpe and Pohorje shows that these mafic rocks are similar to oceanic...zircon (Zr, Hf ) at eclogite-facies conditions. Omphacite hosts most of the Li in addition to some Sr and...Zr-in-rutile thermometry of Koralpe, Saualpe and Pohorje eclogites yields temperatures of 700â730 °C (according...matrix rutile and rutile included in garnet, omphacite or kyanite, suggesting that these temperatures...metamorphic rocks composed of â„ 75 vol.% of garnet and omphacite (IUGS Subcommission on the Systematics of Metamorphic |  | | Journal (article/letter/editorial) | | the formation of oriented SiO2-inclusions in omphacite JuÌrgen Konzett Ă Daniel J. Frost Ă Alexander...temperatures are required to generate CaEsss in omphacite. It is only at 1,350°C that a significant P cation...generated by retrogressive breakdown of CaEskss in an omphacite-Ca-Eskola clinopyroxene based on various reaction...assumptions: molar volumes of Ca-Eskola pyroxene and omphacite: 60.54 cm3/mol (based on a density for CaEsk of...according to McCormick 1986) and 63.80 cm3/mol (omphacite selected: No. 24 in Edgar et al. 1969 with composition |  | | Journal (article/letter/editorial) | | (garnetâomphacite). Second, plagioclaseâ quartz granulites hosting âveinâfractureâ garnetâ omphacite and...and garnetâomphaciteâphengiteâkyaniteâ zoisite eclogites do not show any traces of alterations (even within...per se are defined as rocks with >70% garnet + omphacite, with the rest of the rock consisting of hydrous...minor minerals in equilibrium with garnet and omphacite, the rocks are referred to as hornblende (Hblâ)...used very frequently, because bimineralic garnetâomphacite eclogites are very rare in nature and practically |  | | Journal (article/letter/editorial) | | well-preserved peak-pressure mineral assemblage of garnet, omphacite, kyanite and phengite. Conventional geothermobarometry...recorded by decrease of Ca-Eskola end-member in omphacite, drop in XMg and XGrs at garnet rim and a very...matrix. The absence NU of symplectites after omphacite in the investigated eclogite may be due to a very...et al., 2006). Phase equilibria between garnet-omphacite-kyanitephengite-quartz/coesite can be used to...(up to 2â3 mm in diameter) and a greenish-grey omphacite in about equal proportions; both minerals show |  | | Journal (article/letter/editorial) | | consistent with previous results from TEM analyses of omphacite in eclogites from the Sulu UHP terrane (Shau et...between monoclinic clinopyroxene (McCormick, 1986: omphacite, C2/c, a = 9.50, b = 8.65, c = 5.24, α = 90°,...orientation relationship between barroisite and omphacite has been found in retrogressed eclogites from...of barroisite on omphacite through a 180° rotation around the [001] axis of omphacite (McNamara et al...notably low contents of jadeite comparing to the omphacite coexisting with coesite relics (e.g., Banno et |  | | Journal (article/letter/editorial) | | vol%; Taguchi, Miyake, Enami, & Igami, 2018) and omphacite-rich (38â65 vol%; Enami & Nagasaki, 1999) eclogite...These conditions were estimated using the garnetâomphaciteâkyaniteâphengiteâSiO2 phase thermobarometer of...The analysed sample contains garnet, quartz, omphacite, zoisite, phengite, kyanite, and amphibole with...are represented by recrystallized quartz, with omphacite grains occurring as round-shaped crystals. Phengite...minerals (coesite/pseudomorphs after coesite) with omphacite + kyanite + phengite + rutile + zoisite. 4.2 |  | | Report (chapter) | | AltunâNorth Qilian Mountains and UHP metamorphic rocks in the South AltunâNorth Qaidam Mountains. A review of...basement rocks along the South Altun, North Qaidam Mountains and the Altun and Qilian blocks. Downloaded...tectonic maps of the QilianâAltunâNorth Qaidam Mountains. ModiïŹed from J.X. Zhang et al. (2015, 2017)....mainly occur in the North Qilian Mountains and the North Altun Mountains; and UHP metamorphism, accompanied...the Altun Mountains are the western extension of those in the QilianâNorth Qaidam Mountains. Therefore |  | Miller, C., Konzett, J., Tiepolo, M., Armstrong, R.A., Thöni, M. (2007) Jadeite-gneiss from the Eclogite Zone, Tauern Window, Eastern Alps, Austria: Metamorphic, geochemical and zircon record of a sedimentary protolith. Lithos, 93 (1) 68-88 doi:10.1016/j.lithos.2006.03.045 | Journal (article/letter/editorial) | | rutile + apatite + pyrite. Kyanite, jadeite or omphacite are exclusively present as inclusions in garnet...compression has been dated for the KoralpeâSaualpeâ Pohorje region in the eastern parts of the Austroalpine...jadeite or omphacite ± kyanite ± paragonite (Fig. 2b). The presence of relic jadeite and omphacite provides...elevation 2005 m). The eclogites consist of garnet + omphacite + kyanite + talc + quartz + rutile ± paragonite...amphibole interpreted as pseudomorph after jadeite or omphacite and (b) inclusions of jadeite and quartz in garnet |
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