Results 81 to 90 of about 7,779 (214)

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

, 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
core  

Composite nature of the North China granulite-facies Belt: Tectonothermal and geochronological constraints

, 2006
Granulite-facies rocks are intermittently exposed in a roughly E-W trending belt that extends for approximately 2000 km across the North China Craton, from the Helanshan, Qianlishan, Wulashan-Daqingshan, Guyang and Jining Complexes in the Western Block ...
Zhao, G, Sun, M, Liu, S, Wilde, SA, Sanzhong, L, Zhang, J   +5 more
core   +1 more source

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

The Lapland Granulite Belt. In P. Tuisku and K. Laajoki (Editors): Excursion guide to Lapland (21-24 August 1991)

, 1992
Geologi, Lapland, Precambrian, granulite, excursion ...
Marker, M.
core   +1 more source

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

Cl-rich minerals in Archean granulite facies ironstones from the Beartooth Mountains, Montana, USA: Implications for fluids involved in granulite metamorphism [PDF]

, 1988
The implications of Cl-rich minerals in granulite facies rocks are discussed. Results from ironstones of the Beartooth Mountains, Montana are discussed. It is suggested that CO2-brine immiscibility might be applicable to granulite facies conditions, and ...
Henry, D. J.
core  

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

Oceanic mafic Granulite xenoliths from the Kerguelen Archipelago

, 1994
OCEANIC plateaus are large accumulations of volcanic and plutonic rocks on the ocean floor, whose detailed nature and origin are only poorly understood.
Giret, A, Nicollet, C, N. Shimizu, H. Leyrit, M. Gregoire, Leyrit, H, C. Nicollet, A. Giret, Weis, Dominique, Cottin, Jean-Yves, J. Y. Cottin, N. Mattielli, Gregoire, M., Shimizu, N, Mattielli, Nadine, D. Weis   +15 more
core   +1 more source

Trace element and age characteristics of zircons in granulite xenoliths from the Udachnaya kimberlite pipe, Siberia

, 2009
Trace element and SHRIMP U–Pb geochronological data are presented for zircons from granulite xenoliths from the Devonian Udachnaya kimberlite pipe, situated in the central part of the Siberian craton (66°05′N, 110°45′ E).
Sergeev, S.A., Nikitina, L.P., Vladykin, N.V., Downes, Hilary, Larionov, A.N., Koreshkova, M.Y.   +5 more
core   +1 more source

Data of experimental investigation on the brittle-ductile transition of natural mafic granulite

The data set contains corrected stress-strain data of natural mafic granulite samples experimentally deformed in triaxial compression at temperatures of 950 – 1150°C and a confining pressure of 300 MPa, at varying strain rates between 10-4 s-1 and 10-6 s-
Dang, Jiaxiang
core   +2 more sources