Results 71 to 80 of about 48,430 (124)

Petrology of Oligocene Ghaleh Yaghmesh granitoids in the west of Yazd province

Journal of Economic Geology, 2017
Introduction The generation and evolution of granitic magmas has been a hot debated subject among petrologists. The diversity of their origin has led different authors to propose that these rocks are not simple in their origin and might be generated in
Bahareh Fazeli, Mahmoud Khalili, Roy Beavers, Mahin Mansouri Esfahani, Zahra Loghmani Dastjerdi   +4 more
doaj   +1 more source

The Early Cretaceous Granitoids and Microgranular Mafic Enclaves of Sanguliu Pluton, the Liaodong Peninsula: Implications for Magma Mixing and Decratonic Gold Mineralization in the Eastern North China Craton

, 2022
Some Early Cretaceous granitoids characterized by abundant mafic microgranular enclaves (MMEs) formed by magma mixing have been associated with gold deposits in the eastern North China Craton (NCC).
Chunqiang Zhao, Yan Zhao, Dongtao Li, Cong Chen, Taotao Wu, Yongheng Zhou   +5 more
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Petrogenesis and U-Pb and Sm-Nd geochronology of the Taquaral granite: record of an orosirian continental magmatic arc in the region of Corumba - MS

Brazilian Journal of Geology
The Taquaral Granite is located on southern Amazon Craton in the region of Corumbá, westernmost part of the Brazilian state of Mato Grosso do Sul (MS), near Brazil-Bolivia frontier.
Letícia Alexandre Redes, Maria Zélia Aguiar de Sousa, Amarildo Salina Ruiz, Jean-Michel Lafon   +3 more
doaj   +1 more source

Petrography and mineral chemistry of the Eocene granodiorites in the Toveireh area (Southwest of Jandaq, Isfahan province)

Journal of Economic Geology, 2019
Introduction Granitoids are the most common igneous rocks that are found in all parts of the continental crust and play an important role in the formation and evolution of the Earth’s continental crust (Clarke, 1992).
Masumeh Sargazi, Ghodrat Torabi
doaj   +1 more source

Geochemistry of enclaves and host granites from the Nelas area, central Portugal [PDF]

, 2000
Tonalitic, granodioritic and monzogranitic enclaves occur in the Hercynian peraluminous porphyritic biotite granite and biotite-muscovite granite from the Nelas region. Some variation diagrams show linear trends, but others show dispersion.
Neiva, A. M. R., M.M.V.G Silva, A.M.R Neiva, M.J Whitehouse, Silva, M. M. V. G., Whitehouse, M. J.   +5 more
core   +1 more source

Petrogenesis of Early Cretaceous granitoids and mafic microgranular enclaves from the giant Tonglushan Cu-Au-Fe skarn orefield, Eastern China

, 2021
Late Mesozoic high-K talc-alkaline and high Sr/Y granitoids related to the skam-porphyry-stratabound Cu-Au polymetallic deposits are widespread in the Middle-Lower Yangtze River Belt (MLYRB), Eastern China.
Ma, Qiang, Chu, Gaobin, Cheng, Jiamin, Long, Xiaoping, Tian, Jing, Zhang, Shitao, Chen, Huayong, Zhang, Weifeng, Xiaoping Long, Qiang Ma, Jiamin Cheng, Weifeng Zhang, Shitao Zhang, Jing Tian, Huayong Chen, Gaobin Chu   +15 more
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Diachronous Eocene-Oligocene granitoid magmatism in the southeastern part of the Urumieh-Dokhtar magmatic arc, Mardehak area, Jebal-e-Barez, Jiroft [PDF]

پترولوژی
IntroductionThe Zagros orogeny occurred through four main geodynamic events of the Wilson cycle, leading to the formation of the Neotethys oceanic basin: (i) intracontinental rifting in the Carboniferous, (ii) oceanic basin development in the Permian ...
Raziyeh Moradi, Habibollah Ghasemi, Emilio Saccani, Mohsen Mobasheri   +3 more
doaj   +1 more source

Paired host-enclave geochemistry of mafic microgranular enclaves in the Eastern Belt granite, Peninsular Malaysia

, 2007
This paper describes some of the important petrographic characteristics of the mafic microgranular enclaves and their host rock as well as their chemical relationship to selected granitic rocks from the Eastern Belt granite of Peninsular Malaysia.
Editor Geological Society of Malaysia
core  

Magma interaction processes inferred from Fe-Ti oxide compositions in the Dölek and Sariçiçek plutons, Eastern Turkey [PDF]

, 2008
Magnetite-ulvöspinel and ilmenite-hematite solid solution intergrowths from the high-K calc-alkaline Dölek and Sar?çiçek plutons, Eastern Turkey, were investigated using microprobe analyses.
Uysal I., Aydin F., Sadiklar M.B., Karsli O.   +3 more
core   +1 more source

Interaction between felsic and mafic magmas in the Salmas intrusive complex, Northwestern Iran: constraints from petrography and geochemistry

, 2015
The Salmas plutonic complex, in the northernmost part of Sanandaj-Sirjan Zone of Iran, provides evidence for magma interaction processes. The complex contains mafic-intermediate, hybrid and felsic rocks which intruded into the Paleozoic metamorphic ...
Peter Appel, Buchs, D., Dieter Garbe-Schönberg, Appel, P., Garbe-Schönberg, D., Mitra Ghaffari, Nematollah Rashidnejad-Omran, Rahim Dabiri, Dabiri, Rahim, Ghaffari, M., David Buchs, José Francisco Santos, Garbe-Schönberg, Dieter, Santos, José Francisco, Dabiri, R., Iain McDonald, Appel, Peter, Ghaffari, Mitra, Mata, João, Buchs, David, Santos, J. F., McDonald, I., Rashidnejad-Omran, Nematollah, Mata, J., João Mata, Rashidnejad-Omran, N., McDonald, Iain   +26 more
core   +1 more source