Results 91 to 100 of about 11,494 (230)

Typomorphism of perthitic intergrowth of feldspars from granitic pegmatites from the area of west Azov (Ukrainian shield) [PDF]

, 2014
Приведены данные о вещественном составе графических пегматитов с различной специализацией кварца и отмечено широкое развитие пертитовых вростков в полевых шпатах.
Slivnaya, E. V., Сливная, О. В., Сливная, Олена Василівна   +2 more
core  

U-Pb age of Kaapvaal craton titanite: geotectonic interpretation and correlation with the Karelian craton

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019
The results of dating of Kaapvaal Craton titanite are reported. It is shown that metamorphiczircon, apatite, amphibole and garnet in the Neoarchaean tectono-thermal activation belt in the eastern Swaziland terrane have an age of ca.
Наталья Сергеевна Нестерова, Александр Иванович Слабунов, Наиля Гаптрахмановна Ризванова, Natalya Nesterova, Alexander Slabunov, Nailya Rizvanova   +5 more
doaj   +1 more source

Eocene magmatic processes and crustal thickening in southern Tibet : insights from strongly fractionated ca. 43 Ma granites in the western Gangdese Batholith [PDF]

, 2015
This research was financially co-supported by the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (XDB03010301), the National Key Project for Basic Research of China (Project 2015CB452604), the Chinese National Natural Science ...
Cawood, Peter Anthony, Chung, Sun-Lin, Dai, Jin-Gen, Liu, Dong, Liu, Sheng-Ao, Wang, Qing, Zhang, Liang-Liang, Zhao, Zhi-Dan, Zheng, Yuan-Chuan, Zhu, Di-Cheng   +9 more
core   +1 more source

Geochronology of the felsic rocks in Orijärvi, southern Finland – implications for stratigraphy [PDF]

Estonian Journal of Earth Sciences
The Orijärvi area within the Paleoproterozoic Uusimaa belt contains volcanic and minor sedimentary formations, providing valuable insights into the oldest Svecofennian crust in southern Finland.
Elisa Toivanen, Teemu Vehkamäki, Markku Väisänen, Jaakko Kara, Hugh O’Brien   +4 more
doaj   +1 more source

Natural CaO-TiO2-SiO2 based ceramics [PDF]

, 2011
Lešnica river deposits consist of a large number of minerals of different grain sizes including sphene. Since it is very difficult to obtain pure monophase titanite by different synthetic routes (sol-gel, coprecipitation, combustion, spray pyrolysis and ...
Aleksandar Kremenović, Jelena Pantić, Vesna Poharc-Logar, Volker Kahlenberg   +3 more
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Jadeitite from Guatemala : new observations and distinctions among multiple occurrences [PDF]

, 2011
In Guatemala, jadeitite occurs as blocks in serpentinite mélange in distinct settings on opposite sides of the Motagua fault. Jadeitites north of the Motagua fault are associated with eclogites, blueschists, and garnet amphibolites and distributed over a
Harlow, G.E., Sisson, V. B., Sorensen, S.S.   +2 more
core   +3 more sources

U-Pb isotopic results for single shocked and polycrystalline zircons record 550-65.5-Ma ages for a K-T target site and 2700-1850-Ma ages for the Sudbury impact event [PDF]

The refractory mineral zircon develops distinct morphological features during shock metamorphism and retains these features under conditions that would anneal them in other minerals.
Bohor, B. F., Kamo, S. L., Krogh, T. E.
core   +1 more source

Structural, petrological and chemical analysis of syn-kinematic migmatites: insights from the Western Gneiss Region, Norway. [PDF]

, 2014
International audienceEvidence of melting is presented from the Western Gneiss Region (WGR) in the core of the Caledonian orogen, Western Norway and the dynamic significance of melting for the evolution of orogens is evaluated.
Andersen, Andersen, Andersen, Austrheim, Auzanneau, Bea, Bea, Beaumont, Bittner, Brown, Bryhni, Butler, Carignan, Castro, Cesare, Chen, Corfu, Cuthbert, Dobrzhinetskaya, Engvik, Fossen, Foster, Gao, Gibson, Gordon, Hacker, Hattori, Hermann, Hermann, Holness, Huang, Irifune, Johannes, Johnson, Keken, Kessel, Klein, Kohn, Korksakov, Krabbendam, Kretz, Kriegsman, Krogh, Kylander-Clark, Labrousse, Labrousse, Labrousse, Lang, Lenoir, Mørk, Mørk, Paterson, Patiño Douce, Patiño Douce, Patiño Douce, Pickering, Prouteau, Rapp, Roberts, Roberts, Roermund, Root, Rosenberg, Rosenberg, Rudnik, Sawyer, Sawyer, Schmidt, Schröter, Sizova, Smith, Solar, Spencer, Stern, Stöckhert, Sun, Terry, Teyssier, Tucker, Vanderhaeghe, Vernon, Vrijmoed, Vrijmoed, Wain, Wallis, Warren, Whitney   +86 more
core   +4 more sources

Geochemical characteristics of titanite and U-Pb age of garnet from mineral mines of the Southern Urals

Записки Горного института
Mineralogical-geochemical (SIMS method) study of titanite and geochronological (ID-TIMS method) study of garnets from mineral mines of the Southern Urals has been carried out. The mineral associations containing titanite belong to four contrasting types:
Vladislav S. Stativko, Anton B. Kuznetsov, Vadim V. Smolensky, Nailya G. Rizvanova, Nadezhda A. Sergeeva   +4 more
doaj  

A Petrographic Analysis of the Basal Member of the Kootenai Formation [PDF]

, 1953
The basal member of the Kootenai formation in south­western Montana is typically a fine to medium-grained salt and pepper sandstone and chert-pebble conglomerate.
Coupal, Frank E.
core   +1 more source