• Charnockite Metamorphic Rocks

    Charnockite is a granofels that contains orthopyroxene, quartz, and feldsparCharnockite is frequently described as an orthopyroxene granite Granites are felsic rocks that usually contain no or very little pyroxene There is actually an entire array of rocks (mostlyCharnockite 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 amphibolitesfacies gneisses, and as orthopyroxenebearing migmatites and pegmatoidsCharnockite an overview | ScienceDirect Topicscharnockite, any member of a series of metamorphic rocks with variable chemical composition, first described from the state of Tamil Nadu in southern India and named for Job Charnock The term is often limited to the characteristic orthopyroxene granite of the series Charnockite occurs all overcharnockite | rock | Britannica

  • 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 garrison church, Calcutta, India (Holland, 1900)The rocktype is widespread in the Madras area (whence the gravestone originated—St Thomas Mtn) and is known from much of the highgrade terrane of Peninsular IndiaFinally, the word “charnockite” should not be a synonym for “granulite” and terms such as “mafic charnockite”, “charnockitization”, “incipient charnockite” and “Ctype granite” should be banned from the petrologic lexiconOn charnockites ScienceDirectEXTENSIVE quarrying is being done on the hill slopes west of Kabbal (12° 30′ N, 77° 18′ E, situated about 40 miles southsouthwest of Bangalore), and so fresh surfaces were available forCharnockite in the Making | Nature

  • Review: the charnockite problem, a twenty first century

    Beginning of the twentieth century was marked by coinage of a new rock name, Charnockite, first described as a hypersthenebearing granite from Southern India Since then charnockites have been described from most of the continents and mostly restricted to highgrade belts Later half of the last century saw a lively debate over an igneous versus metamorphic originCharnockite is an opx (usually hypersthene), quartz and feldspar bearing metaigneous rock, mostly acidic in composition, and metamorphosed under granulite facies conditionsIs there a scientific explanation for the greenish colourCharnockite is a felsic, melanocratic, holocrystalline, alkali granitic rock first described from the tombstone of Job Charnock in the graveyard of St John's garrison church, Calcutta, India (Holland, 1900)The rocktype is widespread in the Madras area (whence the gravestone originated—St Thomas Mtn) and is known from much of the highgrade terrane of Peninsular IndiaCharnockite | SpringerLink

  • GR Focus On charnockites University of Wyoming

    “charnockite” and the geologic significance one can apply to it This paper is a summary of what we know about charnockites and provides suggestions on how the term should be used 2 The charnockite rock series Thename“charnockite”wasproposedbyHolland(1900)tocharnockite and to one another In spite of this, the terms charnockite and charnockite series have both been used indiscriminately not only in India but elsewhere, and recently Subramaniam (1959, 1962) redefined charnockite as an orthopyroxenequartzfeldspar rock with or without garnet, characterised byR A Howie, PhD, FGS Geology CharnockitesIt is proposed that name charnockite be adopted for any quartzofeldspathic rock with orthopyroxene, irrespective of its mode of occurrence, structural setting and mode of origin The associated more mafic varieties, be better described as mafic granulite, rather than basic charnockite For the patchy charnockites of east Gondwana (includingReview: the charnockite problem, a twenty first century

  • 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 seriesCharnockite is an opx (usually hypersthene), quartz and feldspar bearing metaigneous rock, mostly acidic in composition, and metamorphosed under granulite facies conditionsIs there a scientific explanation for the greenish colourAbstract Our study of a banded charnockite complex of the MühligHofmannfjella in Dronning Maud Land, Antarctica, illustrates how the combination of hightemperature (re)crystallization processes, melts, and volatile fluids leads to complex intrusive, metasomatic, and structural relationships The igneous complex consists of gently dipping sets of charnockite interlayered with dolerite andBanded Charnockite: The Result of Crustal Magma

  • Varberg–Torpa Charnockite–Granite Association, SW

    The Varberg–Torpa charnockite–granite association (Varberg, SW Sweden) consists of the magmatic Varberg charnockite (1399 ± 6 Ma) and the Torpa granite (1380 ± 12 Ma) The Torpa granite is both continuous and, based on its wholerock geochemistry, synmagmatic with the Varberg charnockiteThe modeling results using reconstructed primary magma composition of the Yunlu charnockite combined with the orthopyroxenegarnetplagioclasequartz thermobarometry and fluid inclusion analyses suggest that the magma was emplaced at a pressure of ~600 MPa, a temperature of >900 °C, and an initial H 2 O content of ~40 wt% with rare CO 2Crystallization and melt extraction of a garnetbearing郯庐断裂带是东亚大陆上的一系列北东向巨型断裂系中的一条主干断裂带,在中国境内延伸2400多公里,切穿中国东部不同大地构造单元,规模宏伟,结构复杂。是地壳断块差异运动的接合带,是地球物理场平常带和深源岩浆活动带。它形成于中元古代。郯庐断裂带百度百科

  • charnockite | Encyclopedia

    charnockite A lightcoloured, medium to coarsegrained igneous rock containing quartz and microcline feldspar (see ALKALI FELDSPAR) as major components with, in order of decreasing abundance, oligoclase feldspar (see PLAGIOCLASE FELDSPAR), hypersthene, biotite, and magnetiteDespite its low abundance, hypersthene (a calciumpoor, ironrich pyroxene) is a distinctiveCharnockite Includes duskygreen, mesocratic, coarse to verycoarsegrained, equigranular to porphyritic, massive to vaguely foliated pyroxenebearing granite to granodiorite; contains clinopyroxene and orthopyroxene, intermediatecomposition plagioclase, potassium feldspar, and blue quartz Reddishbrown biotite, hornblende, and poikiliticCharnockite (VAYc;0) mrdatausgsgovPhysical 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 etcProperties of Charnockite | Physical | Thermal

  • Review: the charnockite problem, a twenty first century

    Beginning of the twentieth century was marked by coinage of a new rock name, Charnockite, first described as a hypersthenebearing granite from Southern India Since then charnockites have been described from most of the continents and mostly restricted to highgrade belts Later half of the last century saw a lively debate over an igneous versus metamorphic originAbstract Our study of a banded charnockite complex of the MühligHofmannfjella in Dronning Maud Land, Antarctica, illustrates how the combination of hightemperature (re)crystallization processes, melts, and volatile fluids leads to complex intrusive, metasomatic, and structural relationships The igneous complex consists of gently dipping sets of charnockite interlayered with dolerite andBanded Charnockite: The Result of Crustal MagmaThe arrested development of charnockite in shear veins at Kabbaldurga3, in the state of Karnataka in India, suggests flow of CO2rich waterdeficient fluids through deepseated rocks as aCharnockite formation at Ponmudi in southern India | Nature

  • Varberg–Torpa Charnockite–Granite Association, SW

    The Varberg–Torpa charnockite–granite association (Varberg, SW Sweden) consists of the magmatic Varberg charnockite (1399 ± 6 Ma) and the Torpa granite (1380 ± 12 Ma) The Torpa granite is both continuous and, based on its wholerock geochemistry, synmagmatic with the Varberg charnockiteCharnockitic magmatism in southern India H M Rajesh1∗ and M Santosh2 1Department of Geographical Sciences and Planning, University of Queensland, St Lucia, 4072 Queensland, Australia 2Department of Natural Environmental Science, Faculty of Science, Kochi University, Kochi 7808520, Japan ∗email: [email protected] Large charnockite massifs cover a substantial portion of theCharnockitic magmatism in southern IndiaThe modeling results using reconstructed primary magma composition of the Yunlu charnockite combined with the orthopyroxenegarnetplagioclasequartz thermobarometry and fluid inclusion analyses suggest that the magma was emplaced at a pressure of ~600 MPa, a temperature of >900 °C, and an initial H 2 O content of ~40 wt% with rare CO 2Crystallization and melt extraction of a garnetbearing

  • 郯庐断裂带百度百科

    郯庐断裂带是东亚大陆上的一系列北东向巨型断裂系中的一条主干断裂带,在中国境内延伸2400多公里,切穿中国东部不同大地构造单元,规模宏伟,结构复杂。是地壳断块差异运动的接合带,是地球物理场平常带和深源岩浆活动带。它形成于中元古代。

    آلة طحن الميلامين اندونيسيا ارقام ناقلات الصرف الصحي بحائل رخيص تأمين القوارب كاليفورنيا كسارة كبيرة تحت الأرض سحق الحجر سوي جنيه تقرير جدوى عن تجريف رمال البحر الحادة تصنيف عملية الطحن الطوب والجبس آلة لبيع الهند الصناعي المغناطيسي طبل فاصل سعر قائمة kaolin الشركات في جورجيا المعدات بأسعار تنافسية للغاية ايرلندا محطم الكهرباء طحن خط إنتاج كربونات الكالسيوم إيطاليا ضوء القمح اللاسلكي تكلفة مصنع خلط الخرسانة المحمولة حجم المدى كسارة الفك أجزاء مطحنة اسطوانة معدات الإنتاج الفلورسبار حفارة نمط مخطط التحكم حفارة نيجيريا المزججة من مخروط محطم من طحن السكك الحديدية مضمنة طاحونة عجلات تستخدم لأدوات الآلات العمود المرفقي الذي هو أكبر ذروة التعدين أو ذروة السيليكا شاشة الاهتزاز الرمال عملية خام القصدير نماذج اختراق جهاز التوجيه حجر طحن مطحنة أسطواني كسارة النحاس صنع في فرنسا صنع الرمال حزام سير المورد المحمول اندونيسيا