Results 91 to 100 of about 52,304 (124)
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Chinese Journal of Geochemistry, 1994
Plagioclase phenocrysts from mafic enclaves and plagioclase from its host granite possess a pattern of complex zonation. A plagioclase phenocryst can generally be divided into three parts: an oscillatory, locally patchy zoned core (An47-19), a ring with dusty, more calcic plagioclase (An64-20) and a normally zoned rim composed of sodic plagioclase ...
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Plagioclase phenocrysts from mafic enclaves and plagioclase from its host granite possess a pattern of complex zonation. A plagioclase phenocryst can generally be divided into three parts: an oscillatory, locally patchy zoned core (An47-19), a ring with dusty, more calcic plagioclase (An64-20) and a normally zoned rim composed of sodic plagioclase ...
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Journal of Asian Earth Sciences, 2004
Abstract Mafic microgranular enclaves (MME) are common in the Early to Middle Miocene Chenar granitoid stock, northwest of Kerman, which is a part of Central Iranian Eocene volcanic belt. They occur individually and in homogeneous or heterogeneous swarms.
M. Arvin, S. Dargahi, A.A. Babaei
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Abstract Mafic microgranular enclaves (MME) are common in the Early to Middle Miocene Chenar granitoid stock, northwest of Kerman, which is a part of Central Iranian Eocene volcanic belt. They occur individually and in homogeneous or heterogeneous swarms.
M. Arvin, S. Dargahi, A.A. Babaei
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Are mafic microgranular enclaves in durbachites plutonic equivalents of common minettes?
2013Durbachites are K-feldspar-phyric biotite-bearing MgO-rich rocks of syenitic composition whose formation involves the mixing of mafic high-potassium partial melts from an enriched mantle with granitic melts. Due to this process, durbachites encompass a broad compositional range and contain variable amounts of mafic microgranular enclaves (MME).
Krmíček, L., Romer, R.
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Mafic Mineral Clots and Microgranular Enclaves in A-Type Granites: Origins And Implications
SSRN Electronic Journal, 2022Alkiviadis Kontonikas-Charos +3 more
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International Geology Review, 1996
The Agacoren Intrusive Suite is exposed as a large intrusive body over ∼500 km2 east of Lake Tuz in central Anatolia and consists of the Cokumkaya gabbro, the Agacoren granitoid, and young dikes. The Agacoren granitoid is the predominant lithology of the Agacoren Intrusive Suite, and is differentiated into several subunits ranging in composition from ...
Yusuf Kagan Kadioglu, Nilgün Gülec
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The Agacoren Intrusive Suite is exposed as a large intrusive body over ∼500 km2 east of Lake Tuz in central Anatolia and consists of the Cokumkaya gabbro, the Agacoren granitoid, and young dikes. The Agacoren granitoid is the predominant lithology of the Agacoren Intrusive Suite, and is differentiated into several subunits ranging in composition from ...
Yusuf Kagan Kadioglu, Nilgün Gülec
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Petrology, 2013
The paper presents original data on the inner structure, mineralogy, and geochemistry of the Late Paleozoic Burgasy quartz syenite massif in western Transbaikalia and mafic microgranular enclaves (MME) in its rocks. The composition of the mafic microgranular enclaves is close to that of phase-1 monzonitoids of this pluton, but the enclaves are not ...
G. N. Burmakina, A. A. Tsygankov
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The paper presents original data on the inner structure, mineralogy, and geochemistry of the Late Paleozoic Burgasy quartz syenite massif in western Transbaikalia and mafic microgranular enclaves (MME) in its rocks. The composition of the mafic microgranular enclaves is close to that of phase-1 monzonitoids of this pluton, but the enclaves are not ...
G. N. Burmakina, A. A. Tsygankov
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Lithos, 2018
Abstract This work evaluates the origin of mafic microgranular enclaves in granites through a process of magma splitting at the boundaries of ascent conduits, where an intermediate, high-silica andesite magma separates into two magma systems without a continuous change, one of Qz-dioritic composition and high-crystal content and another one of ...
Carlos Fernández, Antonio Castro
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Abstract This work evaluates the origin of mafic microgranular enclaves in granites through a process of magma splitting at the boundaries of ascent conduits, where an intermediate, high-silica andesite magma separates into two magma systems without a continuous change, one of Qz-dioritic composition and high-crystal content and another one of ...
Carlos Fernández, Antonio Castro
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Contributions to Mineralogy and Petrology, 2003
Mafic microgranular enclaves, composed of diopside and rare magnesium biotite phenocrysts in a groundmass of diopside, biotite, apatite, Fe-Ti-oxides, and alkali feldspar, are associated with Neoproterozoic Piquiri potassic syenite in southern Brazil.
Jorge Plá Cid +4 more
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Mafic microgranular enclaves, composed of diopside and rare magnesium biotite phenocrysts in a groundmass of diopside, biotite, apatite, Fe-Ti-oxides, and alkali feldspar, are associated with Neoproterozoic Piquiri potassic syenite in southern Brazil.
Jorge Plá Cid +4 more
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Mafic microgranular enclaves (MMEs) within granitoids record the processes that occur during the formation and differentiation of the continental crust. The Jiuling batholith, formed at ca. 811 Ma, is one of the largest batholiths in southern China and contains mafic microgranular enclaves in parts of the batholith.
Di Wang, Jiawei Zhang, Ruya Jia
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Di Wang, Jiawei Zhang, Ruya Jia
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