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charnockite

charnockite

Charnockite is a granofels that contains orthopyroxene, quartz, and feldspar. Charnockite is frequently described as an orthopyroxene granite. Granites are felsic

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  • Charnockite (VAYc;0)

    Charnockite (VAYc;0)

    Geophysical signature: charnockite pods in the southeastern Blue Ridge produce a moderate positive magnetic anomaly relative to adjacent biotite gneisses, resulting in spotty magnetic highs. This unit includes a host of plutons that are grouped on the basis of

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  • Charnockite - an overview | ScienceDirect Topics

    Charnockite - an overview | ScienceDirect Topics

    Charnockite Charnockites occur in several forms and are found in granulite facies metamorphic settings, such as the Dharwar Craton of southern India (Pichamuthu, 1960), where they often occur as igneous plutons, foliated gneisses, charnockitic replacements of amphibolites-facies gneisses, and as orthopyroxene-bearing migmatites and pegmatoids

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  • Charnockite - Introduction, Properties, Naming and Use

    Charnockite - Introduction, Properties, Naming and Use

    Charnockite rock is another type of rock that is a product of metamorphosis. There are many other rocks of a similar type. A few other examples are limestone, soapstone. Let us take a look at the physical and chemical properties of charnockite

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  • Charnockite | SpringerLink

    Charnockite | SpringerLink

    Charnockite is a felsic, melanocratic, holocrystalline, alkali granitic rock first described from the tombstone of Job Charnock in the graveyard of St. John's

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  • Charnockite | rock | Britannica

    Charnockite | rock | Britannica

    Charnockite, any member of a series of metamorphic rocks with variable chemical composition, first described from the state of Tamil Naduin southern Indiaand named for Job Charnock. The term is often limited to the characteristic orthopyroxenegraniteof the series

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  • On charnockites - ScienceDirect

    On charnockites - ScienceDirect

    Jan 01, 2008 Charnockitic rocks form extensive orthogneiss plutons in many granulite terranes and are less commonly found in unmetamorphosed plutons, which have formed in various tectonic regimes. Geochemically, clearly igneous charnockites cover nearly the whole range of granite chemistry, from magnesian to ferroan and from calcic to alkalic

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  • (PDF) Charnockites and Charnockites - ResearchGate

    (PDF) Charnockites and Charnockites - ResearchGate

    The term charnockite was originally proposed for quartz-, feldsparorthopyroxene-bearing igneous rocks series (Holland, 1900)

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  • Charnockite | Definition of Charnockite by Merriam-Webster

    Charnockite | Definition of Charnockite by Merriam-Webster

    Charnockite definition is - any of a series of rocks ranging from granite to norite and pyroxenite all containing hypersthene

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  • Charnockite, St. Thomas Mount Explained

    Charnockite, St. Thomas Mount Explained

    Charnockite, St. Thomas Mount Explained. Charnockite, St. Thomas Mount, located to the south of the Chennai city, in Pallavaram suburb, Tamil Nadu, is a characteristically profuse exposure of quartz–feldspar–hypersthene rock, illustrated by occurrence of two pyroxene facies metamorphism.. The name Charnockite, St. Thomas Mount originated from the use of the rocks quarried from a central

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  • The charnockite series of Amaravathi, Gunter District

    The charnockite series of Amaravathi, Gunter District

    The term 'charnockite' is used for a group of rocks in the acid division (after Holland) and the individual member in the division is recognized by adding a suitable prefix to the charnockite, like 'syenitic' charnockite. The basic division contains gabbro, norite, hornblende norite and biotite norite;

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  • Properties of Charnockite | Physical | Thermal

    Properties of Charnockite | Physical | Thermal

    Physical Properties of Charnockite. Physical properties of rocks are used to identify the type of rocks and to discover more about them. There are various physical properties of Charnockite like Hardness, Grain Size, Fracture, Streak, Porosity, Luster, Strength etc which defines it

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  • Geochemical characteristic of charnockite in North

    Geochemical characteristic of charnockite in North

    Charnockite), Datong Gehuyao (GHY Charnockite and GHY Hy–Tonalite), however, some charnockites might be related to mantle sources magmatic generates melting (Yang et al., 2014; Shi et al., 2019). The Neoarchean charnokite of Yinshan Block has been a hot topic into understanding the

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  • XVIII.—The Geochemistry of the Charnockite Series of

    XVIII.—The Geochemistry of the Charnockite Series of

    Since the classical work of Sir Thomas Holland at the beginning of this century on the charnockite series in Peninsular India there have appeared numerous papers describing rocks from all over the world which have been claimed to belong to this series

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  • Gneiss-charnockite relation around Ponmudi, southern

    Gneiss-charnockite relation around Ponmudi, southern

    Gneiss-charnockite relations in southern Kerala 3 metamorphism is obtained from the U-Pb zircon data for charnockites from Ponmudi Hill which gives an age of c.540 m.y. and c.1930 m.y. (Bhul and Grauert 1985 pers. comm.). 3. Field relations and petrography The area around Ponmudi is a hill resort situated about 60 km north of

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  • Charnockite formation at Ponmudi in southern India | Nature

    Charnockite formation at Ponmudi in southern India | Nature

    The arrested development of charnockite in shear veins at Kabbaldurga3, in the state of Karnataka in India, suggests flow of CO2-rich water-deficient fluids through deep-seated rocks as a

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  • Petrography and geochemistry of Neoproterozoic charnockite

    Petrography and geochemistry of Neoproterozoic charnockite

    Aug 09, 2020 The Neoproterozoic charnockite–granite association of Okpella intrudes metasedimentary and migmatite-gneiss complex rocks in the eastern Igarra Schist Belt, southwestern Nigeria. In order to unravel the complex processes involved in the formation and tectonic evolution of the Igarra Schist Belt during the Neoproterozoic, detailed field, petrographic and whole-rock geochemical

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  • Charnockite | Article about Charnockite by The Free

    Charnockite | Article about Charnockite by The Free

    Charnockite. (named for the founder of Calcutta, J. Charnock), a hypersthene granite typical of Precambrian assemblages that contain migmatites. Charnockite is composed of orthoclase, oligoclase, quartz, and hypersthene; it also often includes the garnets almandine and pyrope, as well as biotite, magnetite, and other minerals

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  • Charnockite - series, western, archaean and age

    Charnockite - series, western, archaean and age

    CHARNOCKITE, in petrology a series of igneous rocks (originally described by Sir T. H. Holland) from Madras presi dency, southern India, and forming a well-defined petrographic province of Archaean age. The name is derived from that of the founder of Calcutta, job Charnock, whose tombstone is made of a typical member of the series

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  • Anatectic origin and geological significance of the

    Anatectic origin and geological significance of the

    Apr 29, 2019 The Neoarchean charnockite of Yinshan Block has been a hot topic into understanding the Precambrian geology of the North China Craton. Although there is a broad consensus that the charnockite is usua

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  • Requirement of HE-PIXE at High Z Elements in Charnockite

    Requirement of HE-PIXE at High Z Elements in Charnockite

    Dec 08, 2020 The results high Z elements in charnockite are to be expected, as the cross section for K-shell ionization of high-Z elements have greater values in the proton energy range of greater than 3 MeV in case of charnockite matrix composition. It has been suggested that the overlap of these discrete, gamma-rays with the X-ray spectrum may be serious

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