Results 131 to 140 of about 30,693,449 (167)
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Lithos, 2014
Abstract The Early Paleozoic intracontinental orogenic belt in the South China Block (SCB) is composed of massive granitoids and high-grade metamorphic rocks. Compared to the widespread distributions of early Paleozoic S-type granites in the eastern SCB, coeval I-type granitoids are rare and consequently receive much less attention.
Yili Guan +6 more
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Abstract The Early Paleozoic intracontinental orogenic belt in the South China Block (SCB) is composed of massive granitoids and high-grade metamorphic rocks. Compared to the widespread distributions of early Paleozoic S-type granites in the eastern SCB, coeval I-type granitoids are rare and consequently receive much less attention.
Yili Guan +6 more
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International Journal of Earth Sciences, 2007
The Upper Cretaceous Torul pluton, located in the Eastern Pontides, is of sub-alkaline affinity and displays features typical of volcanic arc granitoids. It is a composite pluton consisting of granodiorite, biotite hornblende monzogranite, quartz monzodiorite, quartz monzonite and hornblende biotite monzogranite. The oldest syenogranite (77.9 ± 0.3 Ma)
Abdullah Kaygusuz +3 more
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The Upper Cretaceous Torul pluton, located in the Eastern Pontides, is of sub-alkaline affinity and displays features typical of volcanic arc granitoids. It is a composite pluton consisting of granodiorite, biotite hornblende monzogranite, quartz monzodiorite, quartz monzonite and hornblende biotite monzogranite. The oldest syenogranite (77.9 ± 0.3 Ma)
Abdullah Kaygusuz +3 more
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Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 2004
ABSTRACTThe high-dT/dP-type Hidaka Metamorphic Belt in Hokkaido, northern Japan, represents a tilted crustal section of a magmatic arc of Tertiary age. The highest metamorphic grades reached are granulite facies, and the syn-metamorphic granitic rocks are widely distributed in this metamorphic terrane.
Toshiaki Shimura +4 more
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ABSTRACTThe high-dT/dP-type Hidaka Metamorphic Belt in Hokkaido, northern Japan, represents a tilted crustal section of a magmatic arc of Tertiary age. The highest metamorphic grades reached are granulite facies, and the syn-metamorphic granitic rocks are widely distributed in this metamorphic terrane.
Toshiaki Shimura +4 more
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Neues Jahrbuch für Mineralogie - Abhandlungen, 2008
This study examines the geochemistry of the metaluminous Eocene–Oligocene I-type calc-alkaline Qorveh Granitoid Complex (QGC), western Iran. The complex was emplaced in a Sanandaj-Sirjan Zone (SSZ) convergent setting which resulted from subduction of Neo-Tethyian oceanic crust below Central Iran.
Ashraf Torkian +3 more
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This study examines the geochemistry of the metaluminous Eocene–Oligocene I-type calc-alkaline Qorveh Granitoid Complex (QGC), western Iran. The complex was emplaced in a Sanandaj-Sirjan Zone (SSZ) convergent setting which resulted from subduction of Neo-Tethyian oceanic crust below Central Iran.
Ashraf Torkian +3 more
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Island Arc, 2008
Abstract Triassic granitoids related to Palaeo‐ and Neo‐Tethyan events occur widely in the metamorphic terranes largely affected by the Alpine orogeny. A first recorded unmetamorphosed plutonic body intruded into the Palaeotethyan mélange in western Turkey, called the Karaburun granodiorite, is composed of two small intrusive stocks that were emplaced
SÜMER, ÖKMEN +5 more
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Abstract Triassic granitoids related to Palaeo‐ and Neo‐Tethyan events occur widely in the metamorphic terranes largely affected by the Alpine orogeny. A first recorded unmetamorphosed plutonic body intruded into the Palaeotethyan mélange in western Turkey, called the Karaburun granodiorite, is composed of two small intrusive stocks that were emplaced
SÜMER, ÖKMEN +5 more
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Lithos, 2016
Abstract The Baogutu porphyry Cu deposit is a typical reduced porphyry Cu deposit, likely related to ilmenite-series I-type granitoids. However, the nature of the granitoids (ilmenite-series or magnetite-series) and the genesis of the Baogutu deposit are still under debate.
Cao, M. +5 more
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Abstract The Baogutu porphyry Cu deposit is a typical reduced porphyry Cu deposit, likely related to ilmenite-series I-type granitoids. However, the nature of the granitoids (ilmenite-series or magnetite-series) and the genesis of the Baogutu deposit are still under debate.
Cao, M. +5 more
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Contributions to Mineralogy and Petrology, 2002
Miocene extension in the Aegean Sea was accompanied by the intrusion of granitoid and monzonitic magmas at upper crustal levels. With increasing distance from the trench, the metaluminous to slightly peraluminous I-type intrusives show a systematic regional variation in their compositions: medium- to high-K granodiorites in the WSW, high-K low-silica ...
Altherr, R., Siebel, W.
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Miocene extension in the Aegean Sea was accompanied by the intrusion of granitoid and monzonitic magmas at upper crustal levels. With increasing distance from the trench, the metaluminous to slightly peraluminous I-type intrusives show a systematic regional variation in their compositions: medium- to high-K granodiorites in the WSW, high-K low-silica ...
Altherr, R., Siebel, W.
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Journal of Asian Earth Sciences, 2018
Abstract The closure of the Paleotethys ocean in the Tethyan orogenic belt in northeastern (NE) Iran, related to the collision between Gondwana-derived terranes in the south and Laurasia in the north, remains controversial due to the sparsity of Paleozoic ophiolitic outcrops but can be constrained by contemporaneous granitoids.
Jamal Ghavi +3 more
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Abstract The closure of the Paleotethys ocean in the Tethyan orogenic belt in northeastern (NE) Iran, related to the collision between Gondwana-derived terranes in the south and Laurasia in the north, remains controversial due to the sparsity of Paleozoic ophiolitic outcrops but can be constrained by contemporaneous granitoids.
Jamal Ghavi +3 more
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Mineralogy and Petrology, 2011
Fe-Ti-oxides may reach hundreds ppm in I-type granitoids and close to microgranular mafic enclaves (MME) up to several thousands ppm. Western Carpathian I-type granitoids have magnetic susceptibility above 3 × 10−4 SI units, whereas S-type granites are lower. Associated MMEs reach up to 160 × 10−4 SI. The measurement of magnetic susceptibility in field
Igor Broska, Igor Petrík
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Fe-Ti-oxides may reach hundreds ppm in I-type granitoids and close to microgranular mafic enclaves (MME) up to several thousands ppm. Western Carpathian I-type granitoids have magnetic susceptibility above 3 × 10−4 SI units, whereas S-type granites are lower. Associated MMEs reach up to 160 × 10−4 SI. The measurement of magnetic susceptibility in field
Igor Broska, Igor Petrík
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Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 2000
The Late Yanshanian Orogeny (130-90 Ma) encompasses an important Mesozoic magmatic event in the crustal evolution of SE China. Products of post-orogenic magmatism, widely distributed in the eastern part of Zhejiang and Fujian provinces known as the Southeast Coast Magmatic Belt (SCMB), are dominated by large amounts of slightly Nb and Ta depleted, high-
Cheng-Hong Chen +5 more
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The Late Yanshanian Orogeny (130-90 Ma) encompasses an important Mesozoic magmatic event in the crustal evolution of SE China. Products of post-orogenic magmatism, widely distributed in the eastern part of Zhejiang and Fujian provinces known as the Southeast Coast Magmatic Belt (SCMB), are dominated by large amounts of slightly Nb and Ta depleted, high-
Cheng-Hong Chen +5 more
openaire +1 more source