. "http://www.isvav.cz/projectDetail.do?rowId=GA205/99/D049"^^ . "Vyu\u017Eit\u00ED akcesorick\u00FDch miner\u00E1l\u016F jako indik\u00E1tor\u016F petrologick\u00E9ho v\u00FDvoje magmatick\u00FDch hornin v oblasti v\u00FDchodn\u00EDho okraje \u010Cesk\u00E9ho masivu" . . . "2008-05-19+02:00"^^ . "Proveden\u00FD v\u00FDzkum vedl k nov\u00FDm zji\u0161t\u011Bn\u00EDm o akcesorick\u00FDch miner\u00E1lech ve 40 horninov\u00FDch vzorc\u00EDch magmatit\u016F z \u010Cesk\u00E9ho mas\u00EDvu. Byla z\u00EDsk\u00E1na nov\u00E1 data o jejich p\u0159\u00EDtomnosti/nep\u0159\u00EDtomnosti, byla po\u0159\u00EDzena jejich rtg. pr\u00E1\u0161kov\u00E1 data a data chemick\u00E1. \u00DAdaje, kter\u00E9 \u0159e\u0161"@cs . . "V r\u00E1mci hornin t\u0159eb\u00ED\u010Dsk\u00E9ho masivu, jihlavsk\u00E9ho masivu a drobn\u00FDch v\u00FDskyt\u016F magmatick\u00FDch hornin v. od p\u0159ibyslavsk\u00E9 mylonitov\u00E9 z\u00F3ny budou studov\u00E1ny vybran\u00E9 akcesorick\u00E9 miner\u00E1ly. Na z\u00E1klad\u011B jejich chemick\u00E9ho slo\u017Een\u00ED, strukturn\u00EDho stavu, stupn\u011B metamiktn\u00ED p\u0159em\u011Bny a paragenetick\u00E9ho postaven\u00ED budou uveden\u00E9 v\u00FDskyty navz\u00E1jem porovn\u00E1ny, s p\u0159ihl\u00E9dnut\u00EDm k distribuci n\u011Bkter\u00FDch z\u00E1jmov\u00FDch prvk\u016F (U, Th, REE).Zvl\u00E1\u0161tn\u00ED pozornost bude v\u011Bnov\u00E1na distribuci prvk\u016F v zirkonech v souvislosti s destrukc\u00ED jejich p\u0159em\u011Bny tzv. metamiktizac\u00ED. Pomoc\u00ED RTG difrak\u010Dn\u00EDch metod a Ritveldovy anal\u00FDzy bude up\u0159esn\u011Bna pozice substituuj\u00EDc\u00EDch prvk\u016F a charakterizov\u00E1n stupe\u0148 metamiktn\u00ED p\u0159em\u011Bny. Posti\u017Een\u00ED struktury bude podobn\u00FDmi metodami sledov\u00E1no i u dal\u0161\u00EDch vhodn\u00FDch akcesorick\u00FDch miner\u00E1l\u016F. Z\u00EDskan\u00E9 v\u00FDsledky studia vybran\u00FDch akcesorick\u00FDch miner\u00E1l\u016F by m\u011Bli pomoci k bli\u017E\u0161\u00ED charakterizaci n\u011Bkter\u00FDch pochod\u016F v geologick\u00E9 minulosti uveden\u00FDch horninov\u00FDch masiv\u016F a v\u00FDskyt\u016F. Detailn\u00ED studium chemick\u00E9ho slo\u017Een\u00ED a struktur akcesorick\u00FDch miner\u00E1l\u016F p\u0159isp\u011Bj" . . . . . . . . "GA205/99/D049" . "0"^^ . . . "0"^^ . "2"^^ . "2"^^ . . "1"^^ . "Utilisation of accessory minerals as indicators of petrological evolution of ignous rocks in the eastern part of the Bohemian massif"@en . "Neuvedeno."@en . "Chosen accessory minerals will be studied in rocks of the Toeb\u00EDc massif, the Jihlava massif and small outcrops east of the Poibyslav mylonite zone. The above rock bodies will be compared in terms of their the chemical composition, structural stage, degreof metamictization and mineral assemblage character study. Special attention will by paid to the distribution of some elements of interest (U, Th, REE). The distribution of elements will be studied especially in zircons in connection with their structuredestruction - metamictization. The structural position of the substituted elements and degree of metamicteconversion will be characterised, with the help of the XRD analysis (including Rietveld refinement).The same methods will be used for the structuraldescription of other accessory minerals. The results will serve to the characterisation of the some processes in rock history of the massifs and other occurrencesstudied. The mechanism of the elements substitution and some structural changes induced by"@en . .