Mineral parageneses of basic to intermediate metamorphic rocks in the Yamato Mountains, East Antarctica

スポンサーリンク

概要

• 論文の詳細を見る

• Two groups of metamorphic rocks are found in association with syenitic and granitic rocks in the Yamato Mountains; Group I includes two-pyroxene-bearing gneiss and amphibolite, whereas Group II consists of granitic gneiss and associated rocks accompanied by no orthopyroxene. Mineral parageneses of basic to intermediate metamorphic rocks of the two groups were examined in the simplified system (Al)_2O_3-FeO-MgO-CaO-(Na)_2O. Microprobe analyses reveal that hornblende of Group I is of pargasitic composition but hornblende of Group II has broad compositions ranging from tremolitic to pargasitic ones. Mineral parageneses of the two groups are incompatible with each other in such ways that the hornblende-plagioclase assemblage of Group I has higher (Na/Ca)^<M4>_<Hb>/(Na/Ca)_<P1> values than that of Group II, and that the clinopyroxene-hornblende tie lines of Group II are mostly included in the two-pyroxene-hornblende triangles of Group I in the (Al)_2O_3-FeO-MgO-CaO tetrahedron. The hornblende-bearing assemblages of Group II are considered to be of the amphibolite facies but not the granulite facies. Although no direct contact between the granulite-facies and amphibolite-facies metamorphic rocks has been found in the Yamato Mountains, the geological and petrological relations of the syenitic rocks to the metamorphic rocks suggest that the granulite-facies rocks and the syenitic rocks form a geological unit which is in tectonic contact with the other geological unit composed of the amphibolite-facies rocks.

• 国立極地研究所の論文

著者

• Shiraishi Kazuyuki

  National Institute of Polar Research

• ASAMI Masao

  Department of Geological Sciences, College of Liberal Arts, Okayama, University

• Asami Masao

  Department Of Geological Sciences College Of Liberal Arts Okayama University

関連論文

• Foreword
• Foreword
• Foreword
• Joint AWI-NIPR airborne operations in the past and the future
• Granulite-facies beryllium pegmatites in the Napier Complex in Khmara and Amundsen Bays, western Enderby Land, East Antarctica
• RELICT SAPPHIRINE IN PYROPIC GARNET FROM THE EASTERN S∅R RONDANE MOUNTAINS, ANTARCTICA
• CONTRASTING MINERAL ASSOCIATIONS BETWEEN TWO WOLLASTONITE-BEARING CALC-SILICATE GNEISSES, EASTERN SOR RONDANE MOUNTAINS, ANTARCTICA
• A STAUROLITE-BEARING CORUNDUM-GARNET GNEISS FROM THE EASTERN SOR RONDANE MOUNTAINS, ANTARCTICA
• METAMORPHIC CONDITIONS OF ULTRAMAFIC LENSES FROM THE EASTERN SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• A staurolite-bearing corundum-garnet gneiss from the eastern Soer Rondane Mountains, Antarctica
• Metamorphic conditions of ultramafic lenses from the eastern Soer Rondane Mountains, East Antarctica
• NOTE ON THE GEOLOGY OF THE PROTEROZOIC RAYNER COMPLEX AT MT. VECHERNYAYA NEAR MOLODEZHNAYA STATION, ENDERBY LAND
• SOME GEOLOGICAL OBSERVATIONS ON THE ARCHEAN NAPIER COMPLEX AT MT. RIISER-LARSEN, AMUNDSEN BAY, ENDERBY LAND
• PRELIMINARY PETROLOGICAL STUDIES OF THE METAMORPHIC ROCKS OF THE EASTERN SOR RONDANE MOUNTAINS
• GEOLOGY OF THE EASTERN SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• ARRESTED CHARNOCKITE FORMATION IN SRI LANKA : FIELD AND PETROGRAPHICAL EVIDENCE FOR LOW-PRESSURE CONDITIONS
• Arrested charnockite formation in Sri Lanka: Field and petrographical evidence for low-pressure conditions
• Mineralogical Examination of the Allan Hills Achondrites and Their Bearing on the Parent Bodies
• Note on the mineral texture and chemistry of the eastern Bushveld Complex
• STABILITY OF OSUMILITE IN GRANULITE FACIES METAMORPHISM : KMAS SYSTEM AND NATURAL OCCURRENCES
• Stability of osumilite in granulite facies metamorphism: KMAS system and natural occurrences
• PETROGENESIS OF THE META-TRONDHJEMITES FROM CAPE HINODE, EAST ANTARCTICA
• Foreword
• Foreword
• CHIME ages of xenotime, monazite and zircon from beryllium pegmatites in the Napier Complex, Khmara Bay, Enderby Land, East Antarctica
• CHIME ages for granulites from the Napier Complex, East Antarctica
• Petrography and mineral chemistry of high-grade pelitic gneisses and related rocks from Namaqualand, South Africa
• New evidence for prograde metamorphism and partial melting of Mg-Al-rich granulites from western Namaqualand, South Africa
• Resetting and closing codition of Rb-Sr whole-rock isochron system: some samples of metamorphic and granitic rocks from the Gondwana super-continent and Japan Arc
• THE SIGNIFICANCE OF EUHEDRAL CALCIC PLAGIOCLASE INCLUSIONS IN GARNET FROM THE LUTZOW-HOLM COMPLEX, EAST ANTARCTICA : A TEXTURAL INDICATOR OF PARTIAL MELTING IN PELITIC GNEISSES
• PROVENANCE OF THE LUTZOW-HOLM COMPLEX, EAST ANTARCTICA-ION MICROPROBE U-Pb STUDY OF ZIRCONS (II)
• MICROSTRUCTURE OF PERTHITES IN SYENITES FROM THE YAMATO MOUNTAINS, EAST ANTARCTICA
• Note on the geology of the western part of the Soer Rondane Mountains, East Antarctica
• Rb-Sr whole-rock ages of metamorphic rocks from eastern Queen Maud Land, East Antarctica
• Rb-Sr mineral isochron ages of metamorphic rocks around Syowa Station and from the Yamato Mountains, East Antarctica
• Pan-African adakitic rocks from the Sor Rondane Mountains, East Antarctica
• Chemical characteristics of fluorine -bearing biotite of early Paleozoic plutonic rocks from the Sφr Rondane Mountains,East Antarctica
• Geochemical characteristics of two types of early Paleozoic granitoids from the Soer Rondane Mountains, East Antarctica
• Laboratory measurements of P-wave velocity of granulites from Luetzow-Holm Complex, East Antarctica: Preliminary report
• Characterization of the Mefjell plutonic complex from the Sor Rondane Mountains, East Antarctica : Implications for the petrogenesis of Pan-African plutonic rocks of East Gondwanaland
• EXPERIMENTAL STUDY OF THE SYENITIC ROCKS FROM THE YAMATO AND SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• MINERALOGY OF THE SYENITIC ROCKS FROM THE YAMATO AND THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• EXPERIMENTAL STUDIES ON SYENITIC ROCKS IN THE YAMATO MOUNTAINS, EAST ANTARCTICA
• GRANULITE-FACIES METAMORPHIC CONDITIONS IN THE EASTERN SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• Petrochemical character of the syenitic rocks from the Yamato Mountains, East Antarctica
• METADIKES IN THE EASTERN S∅R RONDANE MOUNTAINS, EAST ANTARCTICA
• KYANITE FROM THE WESTERN PART OF THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• Th, U AND Pb ANALYTICAL DATA AND CHIME DATING OF MONAZITES FROM METAMORPHIC ROCKS OF THE RAYNER, LUTZOW-HOLM, YAMATO-BELGICA AND S∅R RONDANE COMPLEXES, EAST ANTARCTICA
• MONAZITE AGES BY THE CHEMICAL Th-U-TOTAL Pb ISOCHRON METHOD FOR PELITIC GNEISSES FROM THE EASTERN S∅R RONDANE MOUNTAINS, EAST ANTARCTICA
• Retrograde metamorphism in the Yamato Mountains, East Antarctica
• Mineral parageneses of basic to intermediate metamorphic rocks in the Yamato Mountains, East Antarctica
• Timing of thermal events in eastern Dronning Maud Land, East Antarctica
• 500 Ma PAN-GONDWANA EVENT AND ITS TECTONIC SIGNIFICANCE : ANTARCTICA AND THE HIMALAYA
• THE STABILITY FIELD OF AMPHIBOLE FROM THE S∅R RONDANE MOUNTAINS, EAST ANTARCTICA : IMPLICATION FOR THE EMPLACEMENT DEPTH OF SYENITE MAGMA
• THE EMPLACEMENT PRESSURE OF SYENITE ESTIMATED FROM THE STABILITY FIELD OF AMPHIBOLE FROM THE YAMATO MOUNTAINS, EAST ANTARCTICA
• Geology of eastern Muhlig -Hofmannfjella and Filchnerfjella in Dronning Maud Land, East Antarctica; A preliminary report of a Japan-Norway-Germany joint geological investigation
• Practical Aspects of Establishing Snow and Ice Runways at JARE Stations: In the Context of the East Antarctic Air Network
• LOCAL FORMATION OF HERCYNITE-PLAGIOCLASE SYMPLECTITE AFTER GARNET AND SILLIMANITE IN KHONDALITE FROM HABARANA, SRI LANKA : MINERAL TEXTURES
• Rb-Sr WHOLE-ROCK AGES OF METAMORPHIC ROCKS FROM EASTERN QUEEN MAUD LAND, EAST ANTARCTICA (2) : TENMONDAI ROCK AND RUNDVAGSHETTA
• Experimental estimation of emplacement depth of granitic dikes from the Sor RondaneMountains, East Antarctica
• Experimental study of the syenitic rocks from the Yamato and Soer Rondane Mountains, East Antarctica (abstract)
• Petrogenesis of the tonalitic rocks from the Soer Rondane Mountains, East Antarctica
• GEOCHEMICAL CHARACTERISTICS OF MAFIC DIKE ROCKS FROM THE S∅R RONDANE MOUNTAINS, EAST ANTARCTICA
• Sm-Nd AND Rb-Sr ISOCHRON AGES FOR META-TRONDHJEMITES FROM CAPE HINODE, EAST ANTARCTICA
• Sm-Nd AND Rb-Sr AGES OF GARNET-BEARING GRANITE FROM THE S∅R RONDANE MOUNTAINS, EAST ANTARCTICA
• PRELIMINARY GEOCHRONOLOGICAL STUDY OF GRANULITES FROM THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA : A COMPARISON OF Rb-Sr AND Sm-Nd AGES
• 21. NEWLY DISCOVERED LATE TRIASSIC HEXACORALS FROM CENTRAL NEPAL
• BASIC AND INTERMEDIATE GNEISSES FROM THE WESTERN PART OF THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• GEOCHEMICAL CHARACTERISTICS OF METAMORPHOSED HIGH K/Na DYKES IN EASTERN QUEEN MAUD LAND, ANTARCTICA : ULTRAPOTASSIC IGNEOUS ACTIVITY LINKED TO PAN-AFRICAN OROGENY
• THE FIRST OCCURRENCE OF HOGBOMITE IN ANTARCTICA : SINNAN ROCKS AND CAPE RYUGU
• Mode of occurrence, bulk chemical compositions, and mineral textures of ultramafic rocks in the Lutzow-Holm Complex, East Antarctica
• Aluminum silicates in the Prince Olav and Soya Coasts, East Antarctica
• Plutonic and metamorphic rocks of Massif-A in the Yanato Mountains, East Antarctica
• Amphibolite-facies mineral assemblages in the Belgica Mountains, East Antarctica
• STRUCTURAL EVOLUTION OF METAMORPHIC AND INTRUSIVE ROCKS FROM THE CENTRAL PART OF THE S∅R RONDANE MOUNTAINS, EAST ANTARCTICA
• GEOCHEMISTRY OF POST-OROGENIC MAFIC DIKE ROCKS FROM THE EASTERN QUEEN MAUD LAND, EAST ANTARCTICA
• The Asuka-90 meteorites collection from Antarctica: Searching, initial processing and preliminary identification
• Foreword
• PROGRESSIVE METAMORPHISM OF CALC-SILICATE ROCKS FROM THE PRINCE OLAV AND SOYA COASTS, EAST ANTARCTICA
• Orthopyroxene-bearing rocks from the Tenmondai and Naga-iwa Rocks in the Prince Olav Coast, East Antarctica: First appearance of orthopyroxene in progressive metamorphic sequence
• Petrography and geothermometry-geobarometry of Botnnuten, East Antarctica
• Rb-Sr and Sm-Nd Ages from the Highland Complex of Sri Lanka.

もっと見る 閉じる

スポンサーリンク