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| METAMORPHIC TERRAIN: LATE PROTEROZOIC DATES FROM THE EASTERN GHATS PROVINCE OF INDIA EDWARD S. GREW Department...metamorphic terrain: late Proterozoic dates from the Eastern Ghats Province of India. Precambrian Res., 33:...perrierite and zircons in two samples from the Eastern Ghats Province of South India, a sapphirine-bearing...late Proterozoic granulite-facies event in the Eastern Ghats Province. In reassemblies of Gondwanaland...proposal, the Eastern Ghats Province is juxtaposed against a high-grade terrain in East Antarctica affected |
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| Konovalov Mountains area žRayner Complex, East Antarctica / D.P. Krylov a a,) , S. Hoernes b, D. Bridgwater...Abstract Rocks of the Rayner complex in East Antarctica have suffered a complex multiphase metamorphic...Keywords: Oxygen isotopes; Polymetamorphism; Fluids; Antarctica 1. Introduction The oxygen isotopic composition...principal sites in the Konovalov mountains near Molodezhnaya station, a previously little investigated part of...high grade Proterozoic Rayner complex of East Antarctica. The rocks of the localities sampled partly preserve |
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| rocks of the Liitzow -- Holm Bay region, East Antarctica Yoichi Motoyoshi, Satoshi Matsubara & Hiroharu...Archaean Napier Complex. The LHB region, East Antarctica, is a granulite-facies terrane metamorphosed...1985), an event extensively reported over East Antarctica (Grew 1982). The LHB region is underlain by pelitic...are the main constituents: ilmenite, rutile and biotite are subordinate. In addition, kyanite, staurolite...(Motoyoshi & Matsubara, in preparation). In many cases, biotite is included in garnet as well. On the basis of |
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| Granulite-Facies Metamorphism at Molodezhnaya Station, East Antarctica by EDWARD S. GREW Department of...ago are exposed around Molodezhnaya Station (670401S, 46OE) in East Antarctica b addition to quartz, K-feldspar...assemblages biotite-rhopyroxen~magnetite,biqtite-garnet+rthopyroxene~enite f magnetite, biotite-garnet ilmenite...ilmenite f magnetite, biotite-garnet-samaniteihenite It rutile, and biotite-garnet-rdieriteilmenito(sillimanite-rutile)...pyrope-alrnandine (13 to 34 mol per cent pyrope). Biotite (X,,= 0.33 to 0.57) is rich in TiO, (4 to 6.3 wt |
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| Geol. 1987, 5 , 1-26 The Rayner Complex of East Antarctica: complex isotopic systematics within a Proterozoic...(locally known as the Rayner Complex) in East Antarctica. Much of the belt is the product of Mid-Proterozoic...scale, at least in one location. Key-words: Antarctica; geochronology; isotopic resetting; Proterozoic;...granulite facies - Fig. 1. Map of part of East Antarctica showing Archaean cratonic blocks and an extensive...Proterozoic terrain. INTRODUCTION About 98% of Antarctica between OoE and 145"E is permanently covered |
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| RAYNER COMPLEX, MacROBERTSON AND KEMP LAND COAST, EAST ANTARCTICA GEOFFREY L. CLARKE* Department of Geology...Rayner Complex, MacRobertson and Kemp Land coast, East Antarctica. Precambrian Res., 40/41: 137-156. The...rocks exposed along the MacRobertson and east Kemp Land coasts consist of, in the west, Archaean gneisses...coastline of MacRobertson, Kemp and Enderby Land, East Antarctica (Sheraton et al., 1980 ). An Archaean...block, the Napier Complex, comprises most of the Enderby Land promontory, and is bounded on both sides and |
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| 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 |
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| single outcrop from the Rayner Complex (Enderby Land, East Antarctica) D. P. KRYLOV ‘**.* and S. D. MINEEV’...outcrop of the polymetamorphic Rayner Complex (East Antarctica) was used to estimate the “model temperatures”...single outcrop in the Rayner Complex (Enderby Land, East Antarctica). The results are compared with temperatures...SETTING The granulite Rayner Complex of East Antarctica has been interpreted as a Proterozoic belt adjacent...1987). Rocks of both complexes are exposed in Enderby Land (Fig. I ). The Rayner Complex was primarily |
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| GR Focus Review High-pressure metamorphism in Antarctica from the Proterozoic to the Cenozoic: A review...2012 Available online 8 August 2012 Keywords: Antarctica Eclogite Garnet peridotite Blueschist-facies...c t The survey of high-P metamorphic rocks in Antarctica can help clarify the geodynamic evolution of...along the eastern margin of the ‘Mawson block’ (e.g., in the Nimrod Glacier region and George V Land). Some...(George V Land; Eyre Peninsula in Australia). Stillwell (1918) described rocks from George V Land containing |
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| of the Fyfe Hills‐Khmara Bay region, Enderby Land, East Antarctica a Michael Sandiford & Christopher J...of the Fyfe Hills‐Khmara Bay region, Enderby Land, East Antarctica, Australian Journal of Earth Sciences:...of the Fyfe Hills-Khmara Bay region, Enderby Land, East Antarctica Michael Sandiford and Christopher J...the Fyfe Hills-Khmara Bay region in Enderby Land, East Antarctica. The D1, D2 and D3 events comprise the...excavation of the gneissic sequence. Key words: Antarctica, Archaean, granulite facies, structure, recumbent |
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| of the northern Prince Charles Mountains, East Antarctica I. C. W. Fitzsimons a b & D. E. Thost c a...of the northern Prince Charles Mountains, East Antarctica, Australian Journal of Earth Sciences: An International...of the northern Prince Charles Mountains, East Antarctica I. C. W. FITZSIMONS1* AND D. E. THOST 2 1 Downloaded...in the northern Prince Charles Mountains, East Antarctica, has a complex intrusive and deformational history...950 to 1000 Ma charnockite elsewhere in East Antarctica. The stability of granulite assemblages throughout |
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| GRR 802 Locality ReinboltHills,Antarctica MolodezhnayaStation,Antarctica KilbourneHole, New Mexico BensonMines...South Carolina Sardinia(?) "ChristmasPoint," Antarctica Norwich, Connecticut KilbourneHole,New Mexico...Mexico Mogok, Burma Bournac,France Beaverlsland,Antarctica Sri Lanka BrandywineSprings,Delaware Sri Lanka...g.,surinamite) were replacedby cordierite and biotite formed either during retrograde metamorphism or...quartz association from Archean rocks in Enderby Land, Antarctica. American Mineralogist, 65, 821-836. -(l98la) |
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| microstructure of monazites from a polymetamorphic rock in Antarctica Lance P. Black 1, John D. Fitzgerald 2, and Simon...high-grade regionally metamorphosed paragneiss from Antarctica contains monazites of several different colours...those of major geological events in this part of Antarctica. They are interpreted in terms of isotopic resetting...of two major geological events in this part of Antarctica. Geological evolution of the Napier complex...(high-grade Introduction The Napier Complex of Enderby Land forms part of the extensive East Antarctic Precambrian |
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| Mona&e and zircon from a Proterozoic terrain in Antarctica had different isotopic responses to temporally...an extensive Proterozoic mobile belt in East Antarctica. The relevant data are presented here, together...detailed chronology for the Rayner Complex of Antarctica, the oldest precursors of which (excluding reworked...from a granulite-facies gneiss elsewhere in Enderby Land. In the present case, the rocks examined contain...Archaean nucleus (Napier Complex) uniformly record biotite Rb-Sr and K-Ar agesof N 500Ma (e.g.,Atrashenok |
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| can be simultaneously determined by the garnet–biotite pair through the application of the present garnet...geobarometer in combination with a well-calibrated garnet-biotite geothermometer. Keywords: application; calibration;...were were determined simultaneously by the garnet-biotite geothermometer [55] in combination with the determined...determined simultaneously by the garnet-biotite geothermometer [55] in combination with the garnet–Al2...the wrong Al2 SiO5 stability field by the garnet-biotite geothermometer [55] in agreement with the GASP |
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| partitioning in cordierite-garnet and cordierite-biotite systems are not conclusive due to difficulties...from 650 ~ C (Central Massachusetts) to 9 0 0 ~ (Antarctica); the compositional spreads of cordierites and...of the areas have been calculated either from biotite-garnet pairs (Ferry and Spear 1978; Perchuk and...the N a i n Complex (Berg 1977a and b) and the Enderby Land, A n t a r c t i c a (Grew 1982). Pressure estimates...4.6 (6.4) 3.2 (4.8) 0.934 3.3 (4.9) Enderby Land, Antarctica h 900 900 76283368 76283350 0.082 0 |
 | HAND, M., SCRIMGEOUR, I., POWELL, R., STÜWE, K., WILSON, C. J. L. (1994) Metapelitic granulites from Jetty Peninsula, east Antarctica: formation during a single event or by polymetamorphism?. Journal of Metamorphic Geology, 12 (4) 557-573 doi:10.1111/j.1525-1314.1994.tb00042.x | Journal (article/letter/editorial) |
| Metapelitic granulites from Jetty Peninsula, east Antarctica: formation during a single event or by polymetamorphism...Peninsula, east Antarctica, contains assemblages involving garnet-sillimanite-biotite-cordierite-spinel-ilmenite-rutile...te-rutile and garnet-orthopyroxene-cordierite-biotite, as well as quartz and K-feldspar. Peak assemblages... Cooling from peak conditions is suggested by biotite + garnet (fsillimanite) overprinting some peak...inferred from the formation of cordierite + garnet + biotite + ilmenite, garnet + sillimanite + cordierite + |
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| ABSTRACT The central Transantarctic Mountains of Antarctica are divided into distinct lithotectonic packages...Introduction The Precambrian basement of East Antarctica represents a large segment of the ancient Gondwana...marginal portions of Gondwana are exposed across Antarctica [10]. This contribution addresses the Proterozoic...placing crystalline rocks from cratonal East Antarctica above supracrustal continental-margin rocks....Miller Range, central Transantarctic Mountains, Antarctica. Inset map (a) of the Transantarctic Mountains |
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| metamorphic rocks in the Field Islands area, East Antarctica LANCE P . BLACK, Bureau of Mineral Resources...geological evolution of the Field Islands area, East Antarctica, was substantially similar to that of the adjacent...direct geochronological significance. Key-words: Antarctica; Archaean; geochronology; metamorphic petrology;...established for the Archaean Napier Complex in Enderby Land, Antarctica, Black & James (1979) postulated that...relation to the Napier and Rayner complexes of Enderby Land. A and B inset: zones of overlap of Napier and |
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| OF A R C H A E A N CONTINENTAL CRUST IN EAST ANTARCTICA J.W. SHERATON and L.P. BLACK Bureau o f Mineral...reworking of Archaean continental crust in East Antarctica. Precambrian Res., 26: 169--198. Preliminary...Mountains (Tingey, 1982) and the Napier Complex of Enderby Land (Grikurov et al., 1976; Sheraton et al., 1980)...gneisses of the Late Proterozoic Rayner Complex in Enderby Land, immediately adjacent to the Archaean Napier...contrast, Late Proterozoic rocks in MacRobertson Land include a high proportion with only a short previous |
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| Osumilite-Sapphirine-Quartz Granulites From Enderby Land Antarctica Mineral Assemblages and Reactions* D.J...Abstract. The 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 |
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| Proterozoic Granulites from the Rauer Group, East Antarctica. I. Decompressional Pressure-Temperature Paths...Proterozoic metamorphic complex (LPC) of East Antarctica (Ravich & Kamenev, 1975; Sheraton et al., 1980)...reconstructions of the geological history of East Antarctica, and its probable role in the excavation and...ABSTRACT Granulites from the Rauer Group, East Antarctica, were metamorphosed at 860±40°C during a high-grade...granulites from the Rauer Group and elsewhere in East Antarctica with calculated P-T paths for simple collisional |
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| metasomatism of the Archaean Napier Complex, East Antarctica CHRISTOPHER J. CARSON1,2 & JAY J. AGUE1 1 Department...pegmatites on Tonagh Island, Napier Complex, East Antarctica, was accompanied by the introduction of aqueous...pegmatites within the Archaean Napier Complex of East Antarctica. We examine the extent of non-volatile mass transfer...SHIRAISHI , K. (eds) Geodynamic Evolution of East Antarctica: A Key to the East– West Gondwana Connection...Geological setting The Archaean Napier Complex, East Antarctica, is located between the latitudes 67.58 and 66 |
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| charnockites from the Liitzow-Holm Bay region, East Antarctica: Evidence for fluidrich metamorphism in the lower...charnockites from the Liitzow-Holm Bay region, East Antarctica: Evidence for fluid-rich metamorphism in the...Proterozoic terrain of Liitzow-Holm Bay in East Antarctica comprises an amphibolite- to granulitefacies...anhydrous granulites (charnockites), garnetand biotite-bearing gneisses (leptynites), and garnet, sillimanite...is characterized by the consumption of garnet, biotite and quartz to produce orthopyroxene, alkali feldspar |
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| Garnet-forming Reactions in Mafic Granulites from Enderby Land, Antarctica—Implications for Geothermometry and Geobarometry...ABSTRACT This study of mafic granulites from Enderby Land, Antarctica, demonstrates the control of rock compositions...fades from the Archaean Napier Complex of Enderby Land, Antarctica. The rocks were collected by Ellis and...Expedition in the 1976-1977 summer field season. Enderby Land is part of the Precambrian East Antarctic Shield...feature of the Napier Complex granulites of Enderby Land Antarctica is the 'near isobaric' cooling following |
