GEOLOGICAL AND PETROLOGICAL CHARACTERS OF THE PLUTONIC ROCKS IN THE LUNCKERYGGEN-BRATTNIPENE REGION, SOR RONDANE MOUNTAINS, EAST ANTARCTICA

スポンサーリンク

概要

• 論文の詳細を見る

• Plutonic rocks in the Lunckeryggen-Brattnipene region, Sor Rondane Mountains are divided into the older (late Proterozoic) and younger (early Paleozoic) intrusive rocks. The older intrusive rocks are composed of tonalite, quartz diorite, granodiorite and small sheet-like granite, granodiorite and trondhjemite. They have a gneissose structure and show a concordant relation to the surrounding metamorphic rocks. On the basis of their field occurrences, it seems that they have intruded before or during the period of the regional mylonitization. The younger intrusive rocks are composed of syenite, quartz syenite and granite. They occur as stocks or dikes intruding discordantly into the surrounding rocks. The older intrusive rocks give low values of magnetic susceptibility in general, while most of the younger intrusive rocks give high magnetic values in Lunckeryggen and the neighborhood. Magnetic values on the discordant granites of the younger stage decrease northward in the Lunckeryggen-Brattnipene region. Moreover, the magnetic values of the younger intrusive rocks in the western Sor Rondane Mountains show a possibility that the lateral variation extends farther west from the Lunckeryggen-Brattnipene region. The younger intrusive rocks are composed of alkaline rocks in contrast with the older intrusive rocks dominated by tonalite and granodiorite with low K_2O content in the Sor Rondane Mountains. Syenitic rocks in the Sor Rondane Mountains are characterized by high K_2O and low Na_2O contents. Such extremely high K_2O/Na_2O ratios correspond to that of the syenitic rocks in the Yamato and Belgica Mountains and it is considered that the high K_2O/Na_2O ratio may be a general characteristic of the early Paleozoic plutonism in the eastern Queen Maud Land. The transition of the plutonism from calc-alkaline to alkaline affinity corresponds to the tendency of the Pan-African magmatism.

• 国立極地研究所の論文

著者

• Sakiyama Tohru

  Faculty Of Science Hiroshima University

• Sakiyama Tohru

  Institute Of Natural And Environmental Sciences Himeji Institute Of Technology

• Osanai Yasuhito

  Department of earth sciences, Okayama university

• Osanai Yasuhito

  Division Of Evolution Of Earth Environments Faculty Of Social Andcultural Studies Kyushu University

• Osanai Yasuhito

  Department Of Earth And Planetary System Science Okayama University

• Osanai Yasuhito

  Division Of Evolution Of Earth Environments Kyushu University

• Osanai Yasuhito

  Division Of Evolution Of Earth Environments Faculty Of Social And Cultural Studies Kyushu University

• Osanai Y

  Division Of Evolution Of Earth Environments Faculty Of Social And Cultural Studies Kyushu University

• TAKAHASHI Yuhei

  Geological Survey of Japan, Hokkaido Branch

• Takahashi Y

  Geological Survey Of Japan Sapporo

• Takahashi Yuhei

  Geological Survey Of Japan

関連論文

• Titanium behavior in quartz during retrograde hydration: Occurrence of rutile exsolution and implications for metamorphic processes in the Sør Rondane Mountains, East Antarctica
• Field studies of proterozoic terrains in Peninsular India and Sri Lanka during 1997-1998
• "Geological survey in southern to eastern peninsular India, 1996"
• The crystal structure of scapolite in the Luetzow-Holm Bay region, East Antarctica
• Decompression process of mafic granulite from eclogite to granulite facies under ultrahigh-temperature condition in the Kontum massif, central Vietnam
• Permo-Triassic ultrahigh-temperature metamorphism in the Kontum massif, central Vietnam
• "Geological fieldwork in the southwestern and central parts of the Highland Complex, Sri Lanka, during 1998-1999, with special reference to the highest grade metamorphic rocks"
• Ultrahigh temperature sapphirine-osumilite and sapphirine-quartz granulites from Bunt Island in the Napier Complex, East Antarctica -Reconnaissance estimation of P-T evolution -
• Mineralogy of scapolite from Skallen in the Lutzow-Holm Bay region, East Antarctica
• Permo-Triassic Barrovian-type metamorphism in the ultrahigh-temperature Kontum Massif, central Vietnam : Constraints on continental collision tectonics in Southeast Asia
• Collision zone metamorphism in Vietnam and adjacent South-eastern Asia : Proposition for Trans Vietnam Orogenic Belt
• ARRESTED CHARNOCKITE FORMATION IN SRI LANKA : FIELD AND PETROGRAPHICAL EVIDENCE FOR LOW-PRESSURE CONDITIONS
• PRELIMINARY RESULT FOR THE Nd AND Sr ISOTOPE CHARACTERISTICS OF THE ARCHAEAN GNEISSES FROM MOUNT PARDOE, NAPIER COMPLEX, EAST ANTARCTICA
• Sm-Nd garnet ages of retrograde garnet bearing granulites from Tonagh Island in the Napier Complex, East Antarctica: A preliminary study
• Isotopic equilibration ages for the Miyanohara tonalite from the Higo metamorphic belt in central Kyushu, Southwest Japan : Implications for the tectonic setting during the Triassic
• Sm-Nd, Rb-Sr and K-Ar geochronology of the Higo metamorphic terrane, west-central Kyushu, Japan
• Ultrahigh temperature metamorphism and deep crustal processes : Introduction
• Fluid inclusions in an osumilite-bearing granulite from Bunt Island in the Archean Napier Complex, East Antarctica: implications for a decompressional P-T path?
• Carbonic fluid inclusions in ultrahigh-temperature metamorphic rocks from Tonagh Island in the Archean Napier Complex, East Antarctica: A preliminary report
• Major and trace element zoning of euhedral garnet in high-grade (>900℃) mafic granulite from the Song Ma Suture zone, northern Vietnam
• Review on "corundum + quartz" assemblage in nature : Possible indicator of ultra-high temperature conditions?
• FINDING OF STAUROLITE IN PELITIC GRANULITES FROM THE HIDAKA METAMORPHIC BELT,HOKKAIDO,JAPAN
• Geochronological evidence for multistage-metamorphic events in ultrahigh-temperature granulites from central Highland Complex, Sri Lanka
• SHRIMP geochronology of a mylonite zone on Tonagh Island: characterisation of the last high-grade tectonothermal event in the Napier Complex, East Antarctica
• Gondwana to Asia - A history of continental growth and deep crustal processes : Introduction
• Textural varieties in the Indochinese metamorphic rocks : A key for understanding Asian tectonics
• Multiple-collision zones in the Sanjiang Region, SW China
• 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
• Fluorine-rich calcic amphiboles in ultrahigh-temperature mafic granulite from Tonagh Island in the Napier Complex, East Antarctica: Preliminary report
• LREE-enriched mafic gneiss and meta-ultramafic rock from Tonagh Island in the Napier Complex, East Antarctica
• Petrography and geochemistry for mafic and ultramafic rocks from Tonagh Island in the Napier Complex, East Antarctica: A preliminary report
• Metamorphic reactions and preliminary P-T estimates of ultrahigh-temperature mafic granulite from Tonagh Island in the Napier Complex, East Antarctica
• Rb-Sr AND K-Ar WHOLE ROCK AGES OF THE PLUTONIC BODIES FROM THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• Rb-Sr and K-Ar whole rock ages of the plutonic bodies from the Soer Rondane Mountains, East Antarctica
• HIGH-GRADE METAMORPHIC ROCKS FROM THE CENTRAL PART OF THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• GEOLOGICAL AND PETROLOGICAL CHARACTERS OF THE PLUTONIC ROCKS IN THE LUNCKERYGGEN-BRATTNIPENE REGION, SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• PETROCHEMICAL STUDY OF THE GNEISS FROM MOUNT PARDOE AND TONAGH ISLAND IN THE NAPIER COMPLEX, EAST ANTARCTICA
• MODE OF PLAGIOCLASE TWIN LAWS IN THE GRANITIC ROCKS IN THE S∅R RONDANE MOUNTAINS
• PRELIMINARY RESULT FOR THE Sm-Nd WHOLE-ROCK AGE OF THE METAMORPHIC ROCKS FROM MOUNT PARDOE IN THE NAPIER COMPLEX, EAST ANTARCTICA
• PRELIMINARY PETROLOGICAL STUDIES OF THE GRANITIC ROCKS IN THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• AMMONIUM CONTENT OF BIOTITES FROM GRANITIC AND METAMORPHIC ROCKS IN THE S∅R RONDANE MOUNTAINS, EAST ANTARCTICA
• Sedimentary structures in the Chilas igneous complex of the Kohistan arc, northern Pakistan(Photo)
• ISOTOPIC EQUILIBRATION AGE OF Sm-Nd WHOLE-ROCK SYSTEM IN THE NAPIER COMPLEX (TONAGH ISLAND), EAST ANTARCTICA
• Timing of anatexis in the Hidaka metamorphic belt,Hokkaido,Japan
• Fission-track Ages and Magnetic Susceptibility of Cretacecous to Paleogene Volcanic Rocks in Southeastern Sikhote Alin,Far East Russia極東ロシア・沿海州南東部の白亜紀〜古第三紀火山岩類のフィッション・トラック年代と帯磁率.
• Petrology and metamorphism of sapphirine-bearing aluminous gneisses from Tonagh Island in the Napier Complex, East Antarctica
• Deformation of ultrahigh-temperature metamorphic rocks from Tonagh Island in the Napier Complex, East Antarctica
• Geology of ultrahigh-temperature metamorphic rocks from Tonagh Island in the Napier Complex, East Antarctica
• Inferred ultrahigh-temperature metamorphism of amphibolitized olivine granulite from the Sor Rondane Mountains, 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