Results 81 to 90 of about 5,714 (221)

Petrography and mineral chemistry of high-grade pelitic gneisses and related rocks from Namaqualand, South Africa

, 2001
P(論文)Four different types of paragneisses, (1) ordinary pelitic gneiss, (2) sapphirine-bearing aluminous gneiss, (3) osumilite-bearing magnesian gneiss, and (4) quartz-magnetite-rich ferruginous gneiss, occur in the Namaqualand Metamorphic Complex in ...
Shiraishi, Kazuyuki, Shimura, Toshiaki, Yuhara, Masaki, Hiroi, Yoshikuni, Motoyoshi, Yoichi, Hokada, Tomokazu, Grantham, Geoffrey H., Knoper, Mike W.   +7 more
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Amphibolite-granulite facies charnockites

, 1953
The Cheri Hill in the Madras type area of charnockites, shows on careful mapping the folding of bands of leptynite and basic charnockites. The mineralogy of the basic types gives striking evidences of the metamorphic origin of charnockites.
Muthuswami, T. N.
core   +1 more source

ARCHEAN AND PALEOPROTEROZOIC HISTORY OF ROCK METAMORPHISM IN THE URALS CRUSTAL SEGMENT

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
In the Urals, Archean and Paleoproterozoic formations were found in several polymetamorphic complexes which crop out as relatively small tectonic blocks (within the first thousands sq. km in area).
Александр Михайлович Пыстин, Юлия Ивановна Пыстина, Alexandr Pystin, Yulia Pystina   +3 more
doaj   +1 more source

Supplementary Tables for 'Constraining the Protoliths of the Apollo Granulite Suite'

The Apollo granulite suite represents the metamorphosed products of impact-contaminated polymict and monomict lunar breccias. We combine bulk and mineral major and trace element systematics with noble gas isotopes to constrain the highland lithologies ...
Hartley, Margaret; id_orcid, Pernet-Fisher, John, Mortimer Market Centre, The University of London, Joy, Katherine, Nottingham, Mark, The University of Manchester, Tartese, Romain; id_orcid, University of Manchester (UOM), Earth and Environmental Sciences - Academic & Research, Birkbeck, University of London, Hartley, Margaret, Tartese, Romain   +12 more
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Using Petrogeochemical Modeling to Understand the Relationship between Paleozoic Magmatism in the Kola Region and Its Precambrian History

Geosciences, 2019
The Kola region hosts numerous Paleozoic massifs of ultrabasic alkaline rocks and carbonatites with deposits of commercially valuable metals, such as iron, tantalum, niobium, and rare earth elements.
Nikolay E. Kozlov, Nikolay O. Sorokhtin, Eugeny V. Martynov   +2 more
doaj   +1 more source

Nature and origin of fluids in granulite facies metamorphism

, 1988
The various models for the nature and origin of fluids in granulite facies metamorphism were summarized. Field and petrologic evidence exists for both fluid-absent and fluid-present deep crustal metamorphism.
Newton, R. C.
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Vein-type graphite deposits in Sri Lanka: the ultimate fate of granulite fluids

, 2019
Hydrothermal graphite vein deposits hosted in granulite facies metamorphic rocks in Sri Lanka are unique because of their large size and high crystallinity.
Jan Marten Huizenga, K.V. Wilbert Kehelpannala, Touret, Jacques L.R., Touret, Jacques LR, Francesca Piccoli, Huizenga, Jan Marten, Jacques L.R. Touret, Kehelpannala, K.V. Wilbert, Piccoli, Francesca, Kehelpannala, KV Wilbert   +9 more
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Geochemical characteristics of apatite in metabasic rocks under different metamorphic conditions: a case study from the Paleoproterozoic Trans-North China Orogen

Dizhi lixue xuebao
Objective  Apatite is a common accessory mineral that is widely distributed in various rock types. Its U-Pb age, trace elements (particularly REE, Th, U, and Sr), and Sr-Nd isotopic compositions provide important information on its chronology and ...
YANG Yuqing, GAO Peng, ZHANG Jian, LIU Xiaoguang, CHENG Changquan, YIN Changqing, QIAN Jiahui   +6 more
doaj   +1 more source

Lower-crustal earthquakes in southern Tibet are linked to eclogitization of dry metastable granulite

Nature Communications, 2018
The triggering mechanism of deep seismicity in Tibet remains unclear. Here the authors use experiments to show that granulite when deformed becomes brittle as it passes into the ecologite stability field developing macroscopic riedel fault zones thus ...
Feng Shi, Yanbin Wang, Tony Yu, Lupei Zhu, Junfeng Zhang, Jianguo Wen, Julien Gasc, Sarah Incel, Alexandre Schubnel, Ziyu Li, Tao Chen, Wenlong Liu, Vitali Prakapenka, Zhenmin Jin   +13 more
doaj   +1 more source

Notice sur la granulite variolitique de Foni, près Gesthorraï (Sardaigne)

, 1888
Kroustchoff K. de. Notice sur la granulite variolitique de Foni, près Gesthorraï (Sardaigne). In: Bulletin de la Société française de Minéralogie, volume 11, 4-5, 1888. pp.
Kroustchoff, K. de
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