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    The Proterozoic Hustad igneous complex: a low strain enclave with a key to the history of the Western Gneiss Region of Norway
    Precambrian Research (2003)
    Håkon AustrheimFernando CorfúInge BryhniTorgeir B. Andersen
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    56
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    10
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    Keywords:
    Felsic
    Baddeleyite
    Pegmatite
    Quartz monzonite
    Geochronology
    Topics:
    Geological and Geochemical Analysis
    earthquake and tectonic studies
    High-pressure geophysics and materials
    Rb-Sr and Sm-Nd Mineral Isochron Ages of the Metamorphic Rocks in the Namaqualand Metamorphic Complex, South Africa
    Gondwana Research (2002)
    Masaki YuharaTakashi MiyazakiJ. IshiokaS. SuzukiHiroo Kagami
    Felsic
    Isograd
    Citations (5)
    The age and origin of felsic intrusions of the Thetford Mines ophiolite, Quebec
    Canadian Journal of Earth Sciences (1985)
    David A. ClagueCharles S. Frani ElJacqueline Eaby
    The Thetford Mines ophiolite in southern Quebec was obducted in Early Ordovician time during the closing of the proto-Atlantic. The tectonized peridotite lower unit of the ophiolite is intruded by felsic dikes and pods including isolated lenses of massive rodingite, small bodies of strongly deformed diorite, and younger, less deformed quartz monzonite. These intrusions are found only near the base of the ophiolite, do not intrude the surrounding country rock, and are rootless; for these reasons they are considered to have been emplaced in the ophiolite before it reached its present location.The younger group of intrusions consists of biotite–muscovite quartz monzonite and leuco–quartz monzonite. Analyzed samples have high K 2 O contents, high (K 2 O × 100)/(Na 2 O + K 2 O) ratios, and high initial strontium ratios (0.7171–0.7179), indicating that the magma source region was continental and that these felsic rocks formed by partial melting of continental sediments. Whole-rock and mineral isochron ages suggest that the felsic intrusions are about 456 ± 4 Ma old and that they were metamorphosed about 418 ± 7 Ma ago.The detachment of the ophiolite occurred about 491 ± 3 Ma ago and is recorded by the age of the metamorphic aureole beneath the ophiolite. The felsic dikes were intruded some 35 Ma years later during the Taconic Orogeny. The lengthy time between detachment and final nappe emplacement recorded by the felsic dikes may be a requirement for the formation of abundant asbestiform chrysotile.
    Felsic
    Quartz monzonite
    Diorite
    Dike
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    Geochronology and geochemistry of Eocene potassic felsic intrusions in the Nangqian basin, eastern Tibet: Tectonic and metallogenic implications
    Lithos (2016)
    Yue XuXian‐Wu BiRuizhong HuYou-wei ChenHe-qing Liu
    Felsic
    Quartz monzonite
    Lile
    Geochronology
    Adakite
    Citations (31)
    Interaction between mingling mafic and felsic magmas: Its roles in differentiation of a quartz monzonite and MMEs from eastern South China
    Lithos (2018)
    Kongyang ZhuZhongyue ShenMingyue LiYi-Hao Yu
    Felsic
    Quartz monzonite
    Igneous differentiation
    Hornblende
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    Evidence for the Contrasting Magmatic Conditions in the Petrogenesis of A-type Granites of Phenai Mata Igneous Complex: Implications for Felsic Magmatism in the Deccan Large Igneous Province
    Journal of the Indian Institute of Science (2018)
    K.R. HariM.P. Manu PrasanthVikas SwarnkarJ. Vijaya KumarKirtikumar Randive
    Felsic
    Quartz monzonite
    Fractional crystallization (geology)
    Petrogenesis
    Citations (9)
    Rb-Sr isotope systematics of muscovite from Pan-African granitic pegmatites of Western and Northeastern Africa
    Mineralogy and Petrology (1995)
    D. K�ster
    Pegmatite
    Muscovite
    Citations (19)
    Geochemistry of mafic microgranular enclaves in the Tamdere Quartz Monzonite, south of Dereli/Giresun, Eastern Pontides, Turkey
    Geochemistry (2005)
    Sabah Yılmaz Şahin
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    Quartz monzonite
    Diorite
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    Petrography and major elements geochemistry of microgranular enclaves and neoproterozoic granitoids of south Khasi, Meghalaya: Evidence of magma mixing and alkali diffusion
    Journal of the Geological Society of India (2010)
    Santosh KumarThepfuvilie Pieru
    Felsic
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    Igneous differentiation
    Petrogenesis
    Magma chamber
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    High-Field Strength Elements Geochemistry of Granite and Co-genetic Pegmatites of the Kawadgaon Area, Bastar Craton, Central India
    Society of Earth Scientists series (2018)
    Yamuna SinghG.B. RoutA. K. BhattPragya PanditSanjay Bagora
    Pegmatite
    Citations (1)