| HORIE, Kenji, HOKADA, Tomokazu, MOTOYOSHI, Yoichi, SHIRAISHI, Kazuyuki, HIROI, Yoshikuni, TAKEHARA, Mami (2016) UâPb zircon geochronology in the western part of the Rayner Complex, East Antarctica. Journal of Mineralogical and Petrological Sciences, 111 (2) 104-117 doi:10.2465/jmps.150811 | Journal (article/letter/editorial) | the western part of the Rayner Complex, East Antarctica Kenji HORIE*,**,â , Tomokazu HOKADA*,**, Yoichi...Rayner Complex of western Enderby Land, East Antarctica, in order to deïŹne the eastern limits of the western...components in the Rayner Complex of western Enderby Land. There is no evidence of reworked Napier Complex...Complex, East Antarctica, SHRIMP UâPb zircon dating, Metamorphism INTRODUCTION East Antarctica has been recognized...Neoproterozoic mobile belts. The Rayner Complex, East Antarctica is considered to belong to the CircumâAntarctic | | | Journal (article/letter/editorial) | Osumilite-Sapphirine-Quartz Granulites From Enderby Land Antarctica Mineral Assemblages and Reactions* D.J...pre-Cambrian granulites of Enderby Land Antarctica, contain coexisting spinel-quartz, sapphirine-quartz...: Osumilite-Sapphirine-Quartz Granulites From Antarctica are rare in nature, and are restricted to isolated...% A1203 and 6.29 wt.% Fe203. In contrast the Enderby Land hypersthenes described here (MgTo- 78) contain...945,a nunatak in Enderby Land, Antarctica (Dallwitz 1968). Further work in Enderby Land by the Australian | | | Report (chapter) | Archaean-Cambrian crustal development of East Antarctica: metamorphic characteristics and tectonic implications...Archaean-Cambrian crustal development of East Antarctica: metamorphic characteristics and tectonic implications...recognized from four distinct belts: the Dronning Maud Land, LtRzow-Holm Bay, Prydz Bay and Denman Glacier Belts...proposed in the SW US-East Antartic model. East Antarctica was not a single unified crustal block within...several continental fragments, including East Antarctica, East Africa, India and Australia [SW US-East | | | Journal (article/letter/editorial) | to quartz in a spinel-bearing quartzite from the Archaean Napier Complex, Antarctica Y. MOTOYOSHI' and...Sapporo 060,lapan ABSTRACT In a granulite-facies spinel-bearing quartzite, corundum, orthopyroxene and...partial rims separating spinel from quartz. Textures indicate the reactions: spinel + quartz = orthopyroxene...orthopyroxene + corundum, and spinel + quartz = orthopyroxene sapphirine. + " h s , corundum and sapphirine...for Mg-Fe distribution coefficient for spinel-sapphirine and spinel-orthopyroxene reflect low-temperature | | | Journal (article/letter/editorial) | quartz assemblage from the Napier Complex, East Antarctica: Diagnostic evidence for Neoarchean ultrahigh-temperature...Priestley Peak (PP)) in the Napier Complex, East Antarctica, provides unequivocal evidence for extreme crustal...Petrology Pseudosection modeling Napier complex Antarctica 1. Introduction * Corresponding author. Graduate...area of ca. 300 km 200 km in the Enderby Land of East Antarctica (e.g., Sheraton et al., 1987; Harley...bearing quartzo-feldspathic granulite from the eastern part of Tonagh Island was analyzed in this study | | | Report (chapter) | evolution of Mt. Riiser-Larsen, Napier Complex, East Antarctica, with reference to the UHT mineral associations...evolution of Mt. Riiser-Larsen, Napier Complex, East Antarctica, with reference to the UHT mineral associations...Archaeanâearly Proterozoic Napier Complex, East Antarctica. The area is structurally divided into the Main...and Shackleton Range; inset of Fig. 1) in East Antarctica, the Napier Complex preserves several unique...SHIRAISHI , K. (eds) Geodynamic Evolution of East Antarctica: A Key to the Eastâ West Gondwana Connection | | | Report (chapter) | orthopyroxene and spinel using ultrahigh-temperature granulite from the Napier Complex, East Antarctica KEI SATO1...Fe2ĂŸ â Mg exchange between orthopyroxene (Opx) and spinel (Spl), 1=2Fe2 Si2 O6 ĂŸ MgAl2 O4 ÂŒ 1=2Mg2 Si2 O6...collected from the Napier Complex in Enderby Land, East Antarctica. The Fe2ĂŸ âMg distribution coefficient...associated high-grade metamorphic rocks from East Antarctica and other regions of the world. The results indicate...utilizing spinel does not give peak metamorphic condition, because it is relatively easy for spinel to re-equilibrate | | | Report (chapter) | aluminous orthopyroxene, cordierite, sillimanite, spinel and quartz in pelites and quartzites. Experimentally...plagioclase; Qz, quartz; Sil, sillimanite; Spl, spinel; Spr, sapphirine. plate regimes. Likewise, at...Textures Eastern Ghats 6c. G o k a r v a r a m 6d. Araku IBC and Near-isothermal 6. Eastern Ghats (N)...Garne~orthopyroxene-sillimanite and sapphirine-spinel-quartz granulites Locality/Area Table . . ...upon problems of defining P - T conditions from spinel+quartz assemblages, which may also appear in definitive | | | Journal (article/letter/editorial) | e r. c o m / l o c a t e / g r Osumilite and a spinel + quartz association in garnetâsillimanite gneiss...from RundvĂ„gshetta, LĂŒtzow-Holm Complex, East Antarctica Toshisuke Kawasaki a,â, Nobuhiko Nakano b, Yasuhito...Keywords: Osumilite Spinelâquartz coexistence RundvĂ„gshetta LĂŒtzowâHolm Complex East Antarctica a b s t r a...from RundvĂ„gshetta, LĂŒtzow-Holm Complex, East Antarctica. The osumilite is characterized by high Si content...report a spinel + quartz association found as inclusions within garnet porphyroblasts. Spinel grains, | | Chadwick, B., Friend, C. R. L., George, M. C., Perkins, W. T. (1993) A new occurrence of musgravite, a rare beryllium oxide, in the Caledonides of North-East Greenland. Mineralogical Magazine, 57 (386) 121-129 doi:10.1180/minmag.1993.057.386.12 | Journal (article/letter/editorial) | Precambrian high-grade terrains in Australia and Antarctica, although mineral and rock associations in these...has also been reported from Casey Bay, Enderby Land, Antarctica (Grew, 1981; Schmetzer, 1983a). Pehrmanite...Provice in South Australia includes phlogopite and spinel as the dominant phases (Teale, 1980). On the grounds...relationships, Teale concluded that the original phlogopite-spinel-taaffeite assemblage formed during a high-grade...believed that h0gbomite formed at the expense of spinel and taaffeite during later upper-amphibolite facies | | | Journal (article/letter/editorial) | formationVolume in the Napier Complex, East Antarctica 191 Experimental constraints of metamorphic...granulite from Howard Hills, Napier Complex, East Antarctica Kei SATO*, Tomoharu MIYAMOTO** and Toshisuke...Complex, East Antarctica. This granulite consists of orthopyroxene, sapphirine, spinel, alkali feldspar...temperature: orthopyroxene + spinel + liquid, orthopyroxene + phlogopite + spinel + liquid, orthopyroxene...sapphirine + spinel + rutile + liquid, orthopyroxene + alkali feldspar + phlogopite + sapphirine + spinel + rutile | | | Journal (article/letter/editorial) | exsolution in granulites from Fyfe Hills, Enderby Land, Antarctica: Evidencefor 1000 oC metamorphictemperaturesin...orourpaper rnadiscussion granulites from Fyfe Hills, Enderby I Evidence for 1000 "c metamorphic ter cheancontinental...therefore cannot be igneour the metapelitesin the Enderby Land g number of exceptionallyrare assembla6 regional...with subordinatepyroxt out the Napier complex in Enderby typically occur as horizons lessthan 3 with aluminous...Enu64ress:DepartmentofGeology,universityofAdederby Land in recent years concerning the exceptional' laide | | | Journal (article/letter/editorial) | combinations of quartz, orthopyroxene, sillimanite, spinel, cordierite, osumilite and garnet (e.g., Dallwitz...01-olivine, Qtz-quartz, Rt-rutile, Sil-sillimanite, Spl-spinel, V-vapor, Zr-zircon. *Standard errors of K,. tAdded...The mineral mixture of olivine, orthopyroxene, spinel (Na,O, 1.36 wt.%; K20, 3.34 wt.%) contents in the...bulk composition of the garnet, orthopyroxene, spinel and quartz at 25 kbar and McIntyre granulite is...apparatus at Ehime University Rundvdgshetta, East Antarctica (Sample No. RVH18SIL) and Kochi University. We | | | Report (chapter) | studies of JARE in the Napier Complex, Enderby Land, East Antarctica Hideo Ishizuka Geological Society, London...studies of JARE in the Napier Complex, Enderby Land, East Antarctica HIDEO ISHIZUKA Department of Geology...geochronology of the Napier Complex in Enderby Land, East Antarctica. Detailed field investigations in several...and timing of UHT metamorphism. In Enderby Land, East Antarctica, the Napier Complex is situated in the...SHIRAISHI , K. (eds) Geodynamic Evolution of East Antarctica: A Key to the Eastâ West Gondwana Connection | | | Journal (article/letter/editorial) | sapphirine-cordierite-garnet-sillimanite granulite from Enderby Land, Antarctica: implications for FMAS petrogenetic grids...Sones, in the Archaean Napier complex of Enderby Land, Antarctica, contains the stable divariant FMAS assemblage...87) - garnet (XMg~ 51) sillimanite. Rare green spinel (XM~= 53.5, ZNO=2.65 w t % ) occurs as inclusions...([sa]) FMAS invariant point involving the phases spinel, garnet, hypersthene, cordierite, sillimanite and...towards the (sp, qz) univariant line. The initial spinel-bearing assemblage was stabilized by Zn and to | | | Journal (article/letter/editorial) | pyroxenegranulites from Tonagh Island, Enderby Land, Antarctica: further evidence for very high temperature...pyroxenites, and spinel-lherzolites from East Tonagh Island, Enderby Land, Antarctica, preserve exsol...km) of lower crust at c. 3070 Ma. Key-words: Antarctica; Archaean; granulite; metamorphism; Napier Complex;...orthopyroxene pigeonite, inverted or inferred quartz spinel (Ca/Ca+Mg+Fe) x 100 after extraction of non-quadrilateral...metamorphism in the Napier Complex of Enderby land, Antarctica, has been demonstrated through the study | | | Journal (article/letter/editorial) | Publishers B.V., Amsterdam An empirical sapphirine-spinel Mg-Fe exchange thermometer and its application...Greenough, J.D., 1991. An empirical sapphirine-spinel Mg-Fe exchange thermometer and its application...dyke, Nova Scotia, Canada. Lithos, 26: 317-332. Spinel-sapphirine-corundum-rutileparageneses in metapelitic...assemblages are estimated from an empirical sapphirine-spinel Mg-Fe exchange thermometer derived from literature...(2) the formation of magnetite at the expense of spinel or sapphirine, leading to an increase in XMg in | | | Journal (article/letter/editorial) | ite granulites from Forefinger Point, Enderby land, Antarctica: implications for the evolution of the...Archaean age from Forefinger Point, S W Enderby Land, East Antarctica, contain very-high-temperature granulite...orthopyroxene (6-7wt% Al,O,), cordierite and sometimes spinel at the expense of porphyroblastic garnet or earlier...cooling history of this terrain. Key words: Antarctica; Archaean; decompression; high temperature; Napier... INTRODUCTION The East Antarctic Shield in Enderby Land comprises two distinctive granulite terrains: | | | Journal (article/letter/editorial) | rock types Mineral assemblages in sapphirine â , spinel â and orthopyroxene â sillimanite metapelitic granulites...orthopyroxene; Qz, quartz; Sil, sillimanite; Spl, spinel; Spr, sapphirine. Assemblages containing strongly...on the studies noted above (Fig. 1) places the spinel â absent invariant point (i.e. [Spl]) at P â T...sapphirine, Ti in orthopyroxene and of course Fe3 + in spinel, sapphirine and orthopyroxene. Furthermore, although...granulites lies in the interpretation of the assemblage spinel + quartz (Spl + Qz). In FMAS this becomes stable | | | Report (chapter) | on March 6, 2015 Geosciences research in East Antarctica (088E â 6088E): present status and future perspectives...palaeoenvironmental and palaeogeographical studies, Antarctica plays a unique role in our understanding of the...of East Antarctica, especially in the Dronning Maud Land and Enderby Land regions. Enderby Land preserves...Mesoproterozoic to Palaeozoic history of Dronning Maud Land is extremely important in understanding the formation...Present understanding of the evolution of East Antarctica in terms of global tectonics allows us to visualize | | | Journal (article/letter/editorial) | cooling and hydration in the Napier Complex, Antarctica Ruairidh J. Mitchell, Simon L. Harley PII: DOI:...cooling and hydration in the Napier Complex, Antarctica, LITHOS (2016), doi: 10.1016/j.lithos.2016.11...cooling and hydration in the T Napier Complex, Antarctica School of Geosciences, University of Edinburgh...UHT granulites from Mt Charles, Napier Complex, Antarctica. P-T phase equilibrium modelling of two garnet...Geological background The Napier Complex of Enderby Land, east Antarctica is a late-Archaean granulite to UHT | | | Journal (article/letter/editorial) | Protoliths of the Napier Complex in Enderby Land, East Antarctica; an overview and implication for crustal...metamorphic rocks of the Napier Complex in Enderby Land, East Antarctica, consist of mantle protolith (serpentinite...activities. The Napier Complex occurs in Enderby Land, East Antarctica (Fig. 1). After the reconnaissance investigation... - - Protoliths of the Napier Complex in Enderby Land 219 Figure 1. (A) Far-distance view of layered...al., 1999); SH-5, Sillimanite-garnet-osumilite(-spinel) quartzite (Sheraton et al., 1987); SZ-8, Average | | | Journal (article/letter/editorial) | 3. Osumilite . . . . . . . . . . . . . . 2.1.4. Spinel + quartz . . . . . . . . . . . 2.1.5. Other âmetapeliticâ...sapphirine; scp, scapolite; sill, sillimanite; sp, spinel; wo, wollastonite. â Tel.: +61 8 8303 4886; fax:...sapphirine + quartz in the late 1960's from Enderby Land, east Antarctica (Dallwitz, 1968; Ellis et al., 1980;...Earth and occur within ancient cratons (e.g. Antarctica, Algeria, Siberia) as well as within more recent...grid, most notably orthopyroxene + sillimanite + spinel + quartz, Annersten and Seifert (1981) conducted | | | Journal (article/letter/editorial) | 98:64-71 9 Springer-Verlag1988 Sapphirine and spinel phase relationships in the system FeO - MgO - AI2Oa...Victoria 3052, Australia Abstract. Sapphirine and spinel can accommodate signifi- cant ferric iron and...theoretical phase relationships involving sapphirine and spinel in addition to sillimanite, garnet, cordierite...ferric/ferrous iron partitioning between sapphirine and spinel-cordierite at high temperatures. By comparison...1000~176 C and 7-8 kbars, while sapphirine-cordierite-spinel-garnet-hypersthene-quartz occurs at temperatures | | | Journal (article/letter/editorial) | sapphirine + quartz and other rocks from Enderby Land, Antarctica, are reproducible with calculated pseudosections...quartz; sa, sapphirine; sill, sillimanite; sp, spinel. INTRODUCTION Sapphirine is an indicator mineral...assemblages in KFMASH, citing rocks from Enderby Land, Antarctica, as an example. KFMASH is the smallest...granulites, owing mainly to the enhanced stability of spinel (e.g. Annersten & Seifert, 1981; Hensen, 1986;... Garnet, g Sapphirine, sa Orthopyroxene, opx Spinel, sp Osumilite, osm Cordierite, cd Liquid, liq |
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