Results 31 to 40 of about 45,840 (156)
Plagioclase transfer from a host granodiorite to mafic microgranular enclaves: diverse records of magma mixing [PDF]
Mineralogy and Petrology, 2014 Chemical and structural zoning in plagioclase can develop in response to a number of different magmatic processes. We examine plagioclase zonation formed during the transfer of plagioclase from a granodioritic host to a monzodioritic enclave to understand the development of different zonation patterns caused by this relatively simple magma mixing ...
Pietranik, Anna, Koepke, Jurgen
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Geochemistry and tectonomagmatic setting of theGharuchah-Sofla intrusions (South Mahabad) [PDF]
پترولوژی, 2018 The Gharuchah-Sofla intrusion from south Mahabad (southeast of West Azerbaijan) consist mostly of granodiorite and tonalite, interspersed with small bodies of quartz diorite, monzogranite, syenogranite, and alkali feldspar granite.
Abdolnaser Fazlnia, Amir Pahnaei
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Geochemical and petrogenetic characterization of the Arroio Divisa Granitoids, Quitéria region, Rio Grande do Sul, Brazil [PDF]
Geologia USP. Série Científica, 2012 The Arroio Divisa Granitoids (ADG), situated in the Quitria region, eastern Sul-rio-grandense Shield, conform an elongate, NE-SW oriented body about 30 km long and 1 to 6 km wide.
Maria de Fátima Bitencourt +3 more
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Triaxial Compression Testing of Multicomponent Geomaterials from Quartz-Poor (Syenitic) Systems
GeoScience Engineering, 2017 This paper focuses on mafic microgranular enclaves enclosed in quartz-poor igneous rocks and their effect on strength properties of the rock massif. The study examines host rock–enclave multicomponent geomaterials from enclave-bearing syenitic rocks from
Krmíček Lukáš, Závacký Martin
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Lithosphere, 2023 The North China Craton (NCC) has thick lithosphere in the Paleozoic (>200 km) but appears to be decratonized in the Mesozoic. However, the actual processes operated in the lower crust-deep mantle are still unclear.
Leilei Dong +3 more
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Top-down structures of mafic enclaves within the Valle Fértil magmatic complex (Early Ordovician, San Juan, Argentina) [PDF]
, 2008 Magmatic structures related to the mechanical interaction between mafic magmas and granitoids have been studied in the Valle Fértil calc-alkaline igneous complex, Argentina.
Viñao, A. +19 more
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Frontiers in Earth Science, 2023 The Jiaodong Peninsula is China’s largest gold province and the third largest in the world. Although gold mineralization is associated with Mesozoic granites temporally and spatially, the specific genetic association remains unclear, leading to ambiguity
Jian Li +13 more
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Brazilian Journal of Geology, 2020 The Glória Norte Stock (GNS) is made up of predominantly porphyritic biotite- amphibole-bearing quartz monzonite, enclosing a large number of microgranular mafic enclaves (MME).
Vinícius Anselmo Carvalho Lisboa +5 more
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Interaction of the lithospheric mantle and crustal melts for the generation of the Horoz pluton (Niğde, Turkey): whole-rock geochemical and Sr–Nd–Pb isotopic evidence [PDF]
Estonian Journal of Earth Sciences, 2016 The Horoz pluton includes granitic and granodioritic rocks, with widespread mafic microgranular enclaves (MMEs). Petrochemically, the rocks of the pluton show calc-alkaline to shoshonitic and metaluminous to slightly peraluminous composition.
Kerim Kocak, Veysel Zedef
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Journal of Economic Geology, 2021 Introduction The chemical composition of biotite in mineralization associated with granitoids and copper porphyry deposits is sensitive to several chemical and physical factors.
Ahmad Ahmadi Khalaji +4 more
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