موقعك الحالي:صفحة رئيسية>المنتجات
Phase equilibria approach to model charnockite genesis. • Metamorphic charnockites record high to ultrahigh-temperatures. • Protoliths of massive charnockites as arc magmas. •
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The charnockite massifs of MGB yielded Sm–Nd and Rb–Sr whole rock model ages in the range of 2200–3170 Ma (Bartlett, Dougherty-Page, Harris, Hawkesworth, Santosh,
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Charnockite. Part of the Encyclopedia of Earth Science book series (EESS) Charnockite is a felsic, melanocratic, holocrystalline, alkali granitic rock first described from the tombstone
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2023年8月21日 Modern analogues of Archaean charnockite are important because they facilitate investigations into processes of early crustal formation and tectonic transition.
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2008年1月1日 In this paper we suggest several changes to charnockite terminology. First, we suggest that the term “charnockite” should be a general term that is applied only to
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2015年5月1日 The charnockite suite shows compositional variation from monzogabbro through gabbroic diorite and diorite to monzodiorite. The charnockite is calc-alkaline and
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2023年2月9日 A comparative study was performed on the petrography, geochemistry and geochronology of charnockite and granulite in the Xiwulanbulang (XWLBL) area,
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2017年4月3日 The studied charnockites of the Jiuzhou, Dasi, and Taima plutons form part of the strongly peraluminous (A/CNK > 1.1–1.6) Qinzhou Bay Granitic Complex (QBGC),
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2023年2月9日 Charnockite has similar geochemical characteristics to felsic granulite, although it differs in having 1) an uneven distribution of major and trace elements; 2) strong depletions in the large-ion lithophile element Cs, the heat-producing elements U and Th, and the high-field-strength elements Nb, Ta, P and Ti; and 3) both Eu-enriched and Eu ...
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2023年1月28日 紫苏花岗岩（含斜方辉石的花岗岩）是一类矿物组成特殊的岩石，是常与斜长岩、苏长岩或麻粒岩等构成高级地体（尤其是前寒武纪克拉通地块）的重要岩石，因此，紫苏花岗岩的研究对了解大陆地壳生长
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Charnockite is a granofels that contains orthopyroxene, quartz, and feldspar.Charnockite is frequently described as an orthopyroxene granite. Granites are felsic rocks that usually contain no or very little pyroxene.
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2019年9月1日 More than 50 years after its discovery, the phenomenon of “incipient” charnockite remains an enigma. First observations by C. S. Pichamuthu were done on vein-like alteration of granitic biotite-hornblende gneiss to an orthopyroxene-bearing rock in a quarry at Kabbal village in Karnataka State, southern India.
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2016年10月1日 Charnockite associated with metapelites (para-charnockite?) In the KKB, orthopyroxene-bearing, felsic granulites are also observed in close association with extensively migmatised metapelites (Fig. 3 c). The interlayered nature of these granulites with rocks of definite sedimentary origin, suggests them to be of metasedimentary origin
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2012年7月1日 Charnockite is a granulitic rock with a variety of compositions characteristic of the association of orthopyroxene with K-feldspar. As a consequence it may also represent an assemblage of rock types connected in their origin by the various mineralogy and mode of occurrence. Thus, the wide distribution of such rocks has been sometimes described ...
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2019年11月1日 Charnockite is a major phase in the southern DC, and it includes two types: the massive garnet-free (or with only rare garnet) charnockite and the gneissic garnet-bearing charnockite. The dark-colored garnet-free charnockite is massive and petrographically homogeneous with little gneissosity and can be represented by sample
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2015年12月15日 In order to understand the genesis of charnockite and its genetic relationship with S-type granite in DSGC, we conducted in situ zircon SIMS U-Pb dating and Hf-O isotopes analyses as well as monazite U-Th-Pb dating based on detailed petrographical and mineral chemical analyses, in combination with applications of newly
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2022年7月1日 The rock sample rich in the Fe content (i.e., charnockite sample with Fe content of 10.09 wt %) has the highest μ values along with the studied energy interval, where the charnockite's μ values are 0.6021 and 0.237 cm −1 at gamma-ray energy of 0.1 and 0.662 MeV, respectively. After that, reducing the Fe concentration in the studied rock ...
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2021年10月1日 The incipient charnockite or orthopyroxene-bearing granitic orthogneiss is a relatively common constituent in ancient granulite-facies terranes, and its formation has been often attributed to an influx of CO 2-rich fluid or a removal of aqueous melt.Temporal relationship between the orthopyroxene formation and the fluid or melt migration,
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New isotopic constraints on age and origin of Mesoarchean charnockite, trondhjemite and amphibolite in the Ntem Complex of NW Congo Craton, southern Cameroon. Precambrian Research , 276, 14–23. 19.
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2017年4月3日 The studied charnockites of the Jiuzhou, Dasi, and Taima plutons form part of the strongly peraluminous (A/CNK > 1.1–1.6) Qinzhou Bay Granitic Complex (QBGC), where they occur together with the orthopyroxene-free Darongshan and Pubei granitic plutons and the Banba rhyolitic volcanic rocks (Fig. 1).The charnockite and granite
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2022年9月9日 The data of magmatic Opx from igneous charnockite and peritectic Opx from melting experiments and granulites are from Zhang et al. . c REE compositions of orthopyroxene from the charnockite (data from Zhang et al. 2021), together with those from peritectic orthopyroxenes in psammitic granulites (Lavaure and Sawyer 2011) for
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1992年3月1日 An overview of charnockite. Charnockite, a quartzfeldspathic rock containing orthopyroxene, is an important component of high-grade, deep-crustal terrains. The origin of charnockite by both igneous and metamorphic processes, not yet clearly defined, has major bearing on the evolution of continents. Precambrian Research, 55 (1992) 399-405 399 ...
Read MoreOrthopyroxene-bearing granitoids, termed as charnockites by Holland (1900) from their type area in the Pallavaram Hills of Madras (India), constitute one of the major lithologies in many Precambrian high-grade metamorphic terranes worldwide (e.g., Rajesh and Santosh, 2012, and references therein).Charnockite is characterized by brownish to dark greenish color
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三大岩常见岩石名称及英文翻译. 砾石gravel ['ɡrævəl] 砂sand [sænd] 粉土silt [silt] 粘土clay [klei] 砂质粘土sandy clay. 粘质砂土clayey sand. 壤土、亚黏土sandy loam [ləum] regolith（topsoil） ['reɡəliθ]浮土（表土）.
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charnockite series have both been used indiscriminately not only in India but elsewhere, and recently Subramaniam (1959, 1962) re-defined charnockite as an orthopyroxene-quartz-feldspar rock with or without garnet, characterised by greenish-blue feldspars and greyish-blue quartz. The term 'charnockite suite' was
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2020年8月9日 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,
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夏炎，博士，南京大学地球科学与工程学院副教授，硕导。主要从事火成岩岩石学 研究 和 教学。中国矿物岩石地球化学学会终身会员、中国地质学会会员、中国地球物理学会 终身会员。近年来，主持了 自然科学基金面上项目、自然科学基金青年基金项目,作为骨干成员参与了 自然科学基金重点 ...
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الصين -تشنغ تشو -المنطقة الوطنية للتنمية الصناعية للتكنولوجيا المتطورة، جادة العلوم رقم 169.
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