velikost textu

Výsledky projektu Distribuce a chování hlavních a stopových prvků ve vybraných mafických minerálech během měnící se teploty a tlaku

Výsledky

▼▲Typ výsledku ▼▲Autor celku ▼▲Název celku
(Celkem 6 zázn.)
Kulhánek, Jan; Faryad, Shah, Wali; Jedlicka, Radim; Svojtka, Martin. Dissolution and reprecipitation of garnet during eclogite facies metamorphism; major and trace elements transfer during atoll garnet formation. Journal of Petrology, 2021, sv. 62, s. 1–22. ISSN 0022-3530. IF 4.515. [Článek v časopise]
The article was also awarded by the editor of the journal as the "editor's choice". Which is as written on the journal website: collection of high quality articles published in the Journal of Petrology, handpicked by the Editor. The articles are free to read online then.
Kubínová, Šárka; Faryad, Shah Wali. Mineral textures of olivine minette and their significance for crystallization history of parental magma; an example from the Moldanubian Zone (the Bohemian Massif). Mineralogy and Petrology, 2019, sv. 113, s. 477–491. ISSN 0930-0708. IF 1.573. [Článek v časopise]
The first part of project was aimed to a petrological research of one of the best-preserved dykes of olivine minette among the lamprophyre dyke swarm in the Moldanubian Zone of the Bohemian Massif (Czech Republic). The minette, exposed at Horní Kožlí Village (near Prachatice town), has porphyric texture with phenocrysts of olivine, clinopyroxene, orthopyroxene and biotite in a fine-grained matrix consisting of K-feldspar, biotite, clinopyroxene and minor plagioclase and quartz. Accessory minerals are apatite, Cr-rich spinel and iron sulphides. Olivine is mostly replaced by talc and rimmed by two zones (coronas) - a talc-rich inner zone and a biotite-rich outer zone. Rarely, larger grains of quartz with a corona of clinopyroxene are present. The clinopyroxene grows mostly perpendicular to the quartz rim and radially penetrates the quartz crystal.
Three stages of mineral crystallization were distinguished. The first stage with apatite, olivine, biotite, spinel, orthopyroxene and part of the clinopyroxene occurred in the mantle position. During the second stage, felsic phases (K-feldspar, plagioclase, quartz) in the matrix were crystallized. The enrichment of the residual melt by silica and Na occurred as the result of both fractionation and contamination during magma ascent through the granulite facies crust during post-collision orogeny in the Bohemian Massif. Minerals related to the third stage were formed during filling of the vesicles (quartz with reaction rims of clinopyroxene) and subsequent alteration (talc after olivine). The origin of quartz with clinopyroxene reaction rims (‘quartz ocelli’) is explained by filling of cavities formed by the escape of volatiles.
Faryad, Shah, Wali; Ježek, Josef; Kulhánek, Jan, Manuscript with a title "P-T path constraint of (U)HP rocks with reaction overstepping during subduction; example from the Western Gneiss Region (Norway)" was submitted to the Journal of Metamorphic Geology (IF 4,850) on 28th June 2021. The result was: Acceptable after Revision (13-Dec-2021). The re-submission was made on 5th January 2022. Currently it's occurring in revision process. [Jiný výsledek]
Kulhánek, Jan; Faryad, Shah, Wali; Jedlicka, Radim; Svojtka, Martin, Oral presentation on the 18th Meeting of the Central European Tectonic Studies Groups (CETEeG) & 25th Meeting of the Czech Tectonic Studies Group (ČTS), Terchová – Vrátna (Slovakia), 22-25th September 2021. Awarded as the best student oral presentation. Title of presentation: Mass balance of Y+REE during atoll garnet formation in eclogite facies rocks. [Jiný výsledek]
Kulhánek, Jan; Faryad, Shah, Wali; Jedlicka, Radim; Svojtka, Martin., Online oral presentation on the Joint SGA - UNCE Virtual Student Conference on the Faculty of Science, Charles University, 15th of April 2021. Presentation title was "Mass balance of Y+REEs during atoll garnet formation in eclogite". [Jiný výsledek]
Kubínová, Šárka, Disertation: Kubínová, Š., 2019. Mineral and chemical changes of magma crystallization during formation of post-Variscan intrusions and veins in the Moldanubian Zone of the Bohemian Massif. Univerzita Karlova, Praha, 168 pp. [Jiný výsledek]