 | KELLY, N. M., CLARKE, G. L., CARSON, C. J., WHITE, R. W. (2000) Thrusting in the lower crust: evidence from the Oygarden
Islands, Kemp Land, East Antarctica. Geological Magazine, 137 (3) 219-234 doi:10.1017/s0016756800004027 | Journal (article/letter/editorial) | | lower crust: evidence from the Oygarden Islands, Kemp Land, East Antarctica N. M. KELLY*†, G. L. CLARKE*...2000) Abstract – Layered orthogneisses of the Oygarden Islands preserve evidence for four high-grade deformation...granulite-facies rocks in the Oygarden Group of Islands, East Antarctica, 220 provide an opportunity...zones. 2. Regional geology The Oygarden Islands in western Kemp Land (Fig. 1) form part of the c. 1000...belt that is interpreted to extend from western Enderby Land to the northern Prince Charles Mountains (Fig |  | | 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...distinct belts: the Dronning Maud Land, LtRzow-Holm Bay, Prydz Bay and Denman Glacier Belts. These high-grade...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) | | microprobe dating Trace element Rayner Complex Antarctica a b s t r a c t A detailed study of monazite...quartz-bearing Mg–Al metapelite from the Oygarden Group of islands, east Antarctica, reveals a complex history of...% ThO2) that are in textural equilibrium with sapphirine– orthopyroxene symplectites formed after garnet...silica-undersaturated metapelite from the Oygarden Group, east Antarctica. The monazite grains display complex...setting The Oygarden Group of islands lies in the Neoproterozoic Rayner Complex of central Kemp Land, adjacent |  | | Journal (article/letter/editorial) | | in Mg–Al-rich Granulites from the Oygarden Islands, East Antarctica N. M. KELLY1* AND S. L. HARLEY2 1...silica-undersaturated metapelites from the Oygarden Group of islands, East Antarctica, preserve clear evidence for...Assemblages that include orthopyroxene, corundum, sapphirine, sillimanite, cordierite, garnet and kornerupine...history. Reaction textures that include coronas of sapphirine and sillimanite separating orthopyroxene and...corundum, and symplectites of orthopyroxene þ sapphirine cordierite/plagioclase, orthopyroxene þ sillimanite |  | | Journal (article/letter/editorial) | | microprobe constraints from the Oygarden Group, Kemp Land, East Antarctica N.M. Kelly a,*,1, G.L. Clarke...Structural Episode in the Oygarden Group of islands, Kemp Land, East Antarctica. Felsic orthogneiss that...960 Ma. The ages for regional thrusting in the Oygarden Group and the Stillwell Hills correlate, suggesting...did not affect Kemp Land until ca. 930 Ma. This age for peak metamorphism in Kemp Land is therefore 50 Myr...northern Prince Charles Mountains. The ages from the Oygarden rocks correlate with the second half of the orogenic |  | | 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...Archaean–early Proterozoic Napier Complex, East Antarctica. The area is structurally divided into the Main...pseudotachylite. Mineral parageneses including sapphirine þ quartz and osumilite, diagnostic of ultrahigh-temperature...Blocks of the Mt. Riiser-Larsen area. Some of the sapphirine–quartz associations are accompanied by retrograde |  | | Journal (article/letter/editorial) | | the collision of the Lambert Terrane of East Antarctica and the Bastar–Dharwar craton. This collision...southern domain of the Eastern Ghats and the Oygardens domain of East Antarctica. The third extensional...a series of basins on the western side of the Eastern Ghats (the Chhatisgarh, Khariar, Ampani, Indravati...basins). The closing of this ocean basin during the Eastern Ghats–Rayner orogeny at ~950 Ma was related to...to the amalgamation of India and East Antarctica to form the supercontinent Rodinia. During the Neoproterozoic |  | | Journal (article/letter/editorial) | | metamorphism in MacRobertson and Kemp Lands, east Antarctica J. A. HALPIN,1 G. L. CLARKE,1 R. W. WHITE2* AND...assemblages from the MacRobertson Land coastline, Rayner Complex, east Antarctica, are consistent with an ÔanticlockwiseÕ...is distinct from that of rocks in adjacent Kemp Land, 50 km to the west, where a ÔclockwiseÕ P–T–t path...accommodated in younger, fertile crust (MacRobertson Land) involving metasediments and felsic plutons with...transfer of strain to adjacent older crust (Kemp Land) subsequent to charnockite emplacement. Key words: |  | | Journal (article/letter/editorial) | | unfortunately relatively rare in nature. These include sapphirine + quartz, orthopyroxene + sillimanite ± quartz...‘Pelitic’ rock compositions . . . . . . . . . 2.1.1. Sapphirine + quartz . . . . . . . . . 2.1.2. Orthopyroxene...osm, osumilite; pl, plagioclase; q, quartz; sa, sapphirine; scp, scapolite; sill, sillimanite; sp, spinel;...reported coexisting sapphirine + quartz in the late 1960's from Enderby Land, east Antarctica (Dallwitz, 1968;...Earth and occur within ancient cratons (e.g. Antarctica, Algeria, Siberia) as well as within more recent |  | | Journal (article/letter/editorial) | | U– Pb geochronology from Tonagh Island, East Antarctica: implications for the timing of ultra-high temperature...orthogneiss from central Tonagh Island, Enderby Land, East Antarctica provides insight into the chronological-metamorphic...rights reserved. Keywords: Napier Complex; East Antarctica; U–Pb geochronology; Zircon; Ion probe 1. Introduction...granulite-facies Archaean Napier Complex of Enderby Land, East Antarctica has received * Corresponding author...mineral assemblages on a regional scale, such as sapphirine+ quartz (Dallwitz, 1968), osumilite9 garnet, |  | | Report (chapter) | | on March 6, 2015 Geosciences research in East Antarctica (088E – 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 |  | | Report (chapter) | | plutonometamorphic complex in the Thala Hills area (Enderby Land, East Antarctica) from zircon SHRIMP dating and implications...Gondwanaland reconstructions near the India– Sri Lanka– Antarctica junction. We present U– Pb zircon isotopic age...affected East Antarctica, including the Sør Rondane Mountains to the west and Kemp Land to the east. The...tectonomagmatic events in Dronning Maud Land of East Antarctica, as well as in other Gondwanaland regions...regions, such as Madagascar, Sri Lanka and eastern Africa. The c. 780– 720 Ma episode may be correlated with |  | | Journal (article/letter/editorial) | | assemblages in Namlekonda are as follows: (i) biotite–sapphirine –spinel–cordierite–orthopyroxene –corundum–potash...is situated near the northeastern margin of the Eastern Dharwar craton about 150 km NNE of Hyderabad (Fig...The area became well known after the report of sapphirine-bearing rocks (Sarvothaman, 1984). The high-grade...belt (Windly et al., 1984; Droop, 1989), East Antarctica (Kelly and Harley, 2004), and central Sri lanka...granulites are rich in cordierite and blue crystals of sapphirine are visible in hand specimen. Rajesham et al |  | Liu, X. C., Wang, W.-R. Z., Zhao, Y., Liu, J., Song, B. (2014) Early Neoproterozoic granulite facies metamorphism of mafic dykes from the Vestfold Block, east Antarctica. Journal of Metamorphic Geology, 32 (9) 1041-1062 doi:10.1111/jmg.12106 | Journal (article/letter/editorial) | | of mafic dykes from the Vestfold Block, east Antarctica X. C. LIU,1 W.-(R. Z.)WANG,1 Y. ZHAO,1 J. LIU1...Paleomagnetism and Tectonic Reconstruction of Ministry of Land and Resources, Institute of Geomechanics, Chinese...collision between the Indian craton and east Antarctica (i.e. the Lambert Terrane or the Ruker craton...dykes. Key words: early Neoproterozoic; east Antarctica; granulite facies metamorphism; mafic dykes;...exposed in Kemp Land, MacRobertson Land and Princess Elizabeth Land of east Antarctica, there exist four |  | | Journal (article/letter/editorial) | | in initial porphyroblastic garnet1 and later sapphirine–spinel1 incongruent solid mineral assemblages...layer, this allowed localized concentration of sapphirine-spinel1 and residual sillimanite1, producing...shifted to the restitic domain allowing reacting sapphirine, spinel1 and sillimanite to produce coronal garnet2–corundum...tectonic framework of Peninsular India. EGMB (Eastern Ghats Mobile Belt) and ADMB (Aravalli–Delhi Mobile...layers, garnet–spinel– sillimanite–corundum ± sapphirine–plagioclase–perthite–biotite associations are |  | Mitchell, Ruairidh J., Johnson, Tim E., Clark, Chris, Gupta, Saibal, Brown, Michael, Harley, Simon L., Taylor, Richard (2019) Neoproterozoic evolution and Cambrian reworking of ultrahigh temperature granulites in the Eastern Ghats Province, India. Journal of Metamorphic Geology, 37 (7) 977-1006 doi:10.1111/jmg.12451 | Journal (article/letter/editorial) | | reworking of ultrahigh temperature granulites in the Eastern Ghats Province, India Ruairidh J. Mitchell1,2 |...Running title: Evolution of UHT granulites in the Eastern Ghats Abstract The timescales and P–T conditions...cordierite–spinel-bearing granulites from Vizianagaram, Eastern Ghats Province (EGP), India, were investigated...the Rayner terrane, Eastern Ghats Province and cratonic India. KEYWORDS Eastern Ghats Province, phase...data from metapelitic rocks from Vizianagaram, Eastern Ghats Province (EGP), India (Figure 1). We use |  | | Journal (article/letter/editorial) | | K2O-FeO-MgO-Al2O3-SiO2-H2O for silica-undersaturated sapphirine-bearing mineral assemblages D. E. KELSEY, R....(snaredaveyk@yahoo.com.au) ABSTRACT Silica-undersaturated, sapphirine-bearing granulites occur in a large number of...equilibria. Here, a calculated P–T projection for sapphirine-bearing, silicaundersaturated metapelitic rock...assemblages. This study builds on that for KFMASH sapphirine + quartz equilibria [Kelsey et al. (2004) Journal...experiments and/ or natural assemblages. Coexisting sapphirine and silicate melt (with or without corundum) |  | Das, Kaushik, Bose, Sankar, Karmakar, Subrata, Dunkley, Daniel J., Dasgupta, Somnath (2011) Multiple tectonometamorphic imprints in the lower crust: first evidence of ca. 950 Ma (zircon U-Pb SHRIMP) compressional reworking of UHT aluminous granulites from the Eastern Ghats Belt, India. Geological Journal, 46 (2) 217-239 doi:10.1002/gj.1246 | Journal (article/letter/editorial) | | reworking of UHT aluminous granulites from the Eastern Ghats Belt, India KAUSHIK DAS 1*, SANKAR BOSE 2...suite of granulites from the central part of the Eastern Ghats Belt (EGB), India unveils polyphase tectonothermal...recorded in the rocks of the Rayner Complex of east Antarctica, thereby strengthening the notion of Indo-Antarctic...29 March 2010 KEY WORDS deep crustal reworking; Eastern Ghats Belt; India; UHT aluminous granulites; zircon...Complex in east Antarctica (Harley and Hensen, 1990; Harley, 2003) and the Proterozoic Eastern Ghats Belt |  | | Journal (article/letter/editorial) | | Archaean history of the Napier Complex, east Antarctica Received: 16 March 2004 / Accepted: 20 October... ultra-high temperature Napier Complex, east Antarctica. Scanning electron microscope characterisation...map of the western Napier Complex, Enderby Land, east Antarctica. Areas of outcrop are indicated in dark...Sheraton et al. 1987). Inset: close-up of the Casey Bay region and location of Zircon Point minerals, and...the coastal outcrops and islands, and inland mountain ranges of Enderby Land between 48E–57E and 66S–68S |  | | Journal (article/letter/editorial) | | thermodynamic properties of sapphirine, quantifying the effects of oxidation state on sapphirine, orthopyroxene and...+ Opx + Qz assemblage, Mount Rüser–Larsen, Enderby Land. Opx in this granoblastic texture contains up...Complex Opx + Sil + Qz assemblage, Mount Renouard, Enderby Land. Opx contains up to 11 wt% Al2O3. Mesoperthitic...Brusilov, Enderby Land. (d) Early sapphirine in a Spr + Opx + Crd assemblage, Forefinger Point, Enderby Land...ferroaugite from a metaironstone, Tonagh Island, Enderby Land (Harley, 1987). well-documented case studies |  | Dharmapriya, P.L., Malaviarachchi, Sanjeeva P.K., Galli, Andrea, Su, Ben-Xun, Subasinghe, N.D., Dissanayake, C.B. (2015) Rare evidence for formation of garnet+corundum during isobaric cooling of ultrahigh temperature metapelites: New insights for retrograde P–T trajectory of the Highland Complex, Sri Lanka. Lithos, 220. 300-317 doi:10.1016/j.lithos.2015.01.015 | Journal (article/letter/editorial) | | characteristic for extreme temperature conditions namely, sapphirine + quartz (Morse and Talley, 1971; Ellis et al...metamorphic terrain in Japan (Osanai et al., 1998), Eastern Ghats in India (Sengupta et al., 1999), Ouzzal...subsequently breaks down at decompression TE forming sapphirine (e.g Kriegsman and Schumacher, 1999; Moraes et...Baba, 2003; Ouzegane et al., 2003), cordierite-sapphirine-spinel (Ouzegane et al., 2003) or spinel- CE...Lanka, namely NU Lützow Holm Complex, east Antarctica (e.g. Motoyoshi and Ishikawa, 1997; Satish-Kumar |  | | Journal (article/letter/editorial) | | We report three new localities of corundum and sapphirine-bearing hyper aluminous Mg-rich and silica-poor...prominent among which is the triple corona of spinel–sapphirine–cordierite on corundum, with the whole textural...Ged + Crn = Spl + Spr + Crd. The formation of sapphirine–sillimanite assemblage/symplectite associated...reaction: Crd + Crn = Spr + Sil. The association of sapphirine cordierite symplectite with gedrite– sillimanite...reaction: Ged + Sil = Spr + Crd. Extensive growth of sapphirine–cordierite observed on the rim of gedrite porphyroblasts |  | Belyanin, G.A., Rajesh, H.M., Van Reenen, D.D., Mouri, H. (2010) Corundum + orthopyroxene spinel intergrowths in an ultrahigh-temperature Al-Mg granulite from the Southern Marginal Zone, Limpopo Belt, South Africa. American Mineralogist, 95 (1) 196-199 doi:10.2138/am.2010.3383 | Journal (article/letter/editorial) | | either in contact or separated from each other by sapphirine ± cordierite intergrowths in high-temperature...ultrahigh Al2O3 contents (~18–23 wt%), in Mg-Al sapphirine-bearing granulite xenoliths (e.g., Ulianov and...textural equilibrium in a Mg-Al granulite from east Antarctica (Kelly and Harley 2004). Thus our discovery of...Reaction textures and metamorphic evolution of sapphirine-bearing granulites from the Gruf Complex, Italian...186–196. Grew, E.S. (1983) Sapphirine-garnet and associated parageneses in Antarctica. In R.L. Oliver, P.R |  | | Journal (article/letter/editorial) | | Title: Multi-stage metamorphism in the Rayner–Eastern Ghats Terrane: P–T–t constraints from the northern...northern Prince Charles Mountains, east Antarctica Author: Laura J. Morrissey Martin Hand David E. Kelsey...from the northern Prince Charles Mountains, east Antarctica, Precambrian Research (2015), http://dx.doi.org/10...thermal gradients are similar to those in the Eastern Ghats Province in India. pt - Ac ce 1 2 3 4...81 1 Multi-stage metamorphism in the Rayner–Eastern Ghats Terrane: P–T–t constraints 2 from the northern |  | | Journal (article/letter/editorial) | | (SE India), and implications for SE India–East Antarctica correlation H. Hrushikesh, N. Prabhakar, A. Bhattacharya...(SE India), and implications for SE India–East Antarctica correlation, Precambrian Research (2019), doi:...2 India), and implications for SE India–East Antarctica correlation Hrushikesh H1, Prabhakar N1*, Bhattacharya...those 48 recorded in the basement rocks of East Antarctica, suggesting a possible tectonic linkage 49 ...schist; P–T–t–d path; 52 monazite dating; East Antarctica 53 54 1. INTRODUCTION 55 The South Indian |
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