About: Hyperpotassic granulites from the Blanský les Massif (Moldanubian Zone, Bohemian Massif) revisited

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About: Hyperpotassic granulites from the Blanský les Massif (Moldanubian Zone, Bohemian Massif) revisited Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In the Blanský les granulite Massif built mainly by felsic calc-alkaline HP?HT Grt + Ky granulite, occur rare small bodies of hyperpotassic (K2O < 7 %, up to c. 14 %, K2O/Na2O = 3.1?9.2 wt. %) granulite with Grt or Px. Characteristic are high concentrations of Cs, Rb, Ba and U at variable enrichments in Zr and Hf; contents some HFSE (Ti, Nb and Ta) are extremely low. The Sr?Nd isotopic ratios document the derivation from mature crustal sources (Eps337 -5.5; 87Sr/86Sr337 = 0.7109-0.7279). Ap saturation temperatures are high, close to the previously estimated conditions of (re)crystallization for both calc-alkaline and hyperpotassic granulites. The hyperpotassic granulites are interpreted as Viséan igneous rocks. The parental magma could have originated by low degrees of HP?HT, non-eutectic partial melting. The low-scale melt was most likely expelled close to the HP?HT metamorphic peak or at early stages of decompression from common Moldanubian calc-alkaline granulites. In the Blanský les granulite Massif built mainly by felsic calc-alkaline HP?HT Grt + Ky granulite, occur rare small bodies of hyperpotassic (K2O < 7 %, up to c. 14 %, K2O/Na2O = 3.1?9.2 wt. %) granulite with Grt or Px. Characteristic are high concentrations of Cs, Rb, Ba and U at variable enrichments in Zr and Hf; contents some HFSE (Ti, Nb and Ta) are extremely low. The Sr?Nd isotopic ratios document the derivation from mature crustal sources (Eps337 -5.5; 87Sr/86Sr337 = 0.7109-0.7279). Ap saturation temperatures are high, close to the previously estimated conditions of (re)crystallization for both calc-alkaline and hyperpotassic granulites. The hyperpotassic granulites are interpreted as Viséan igneous rocks. The parental magma could have originated by low degrees of HP?HT, non-eutectic partial melting. The low-scale melt was most likely expelled close to the HP?HT metamorphic peak or at early stages of decompression from common Moldanubian calc-alkaline granulites. (en)
Title	Hyperpotassic granulites from the Blanský les Massif (Moldanubian Zone, Bohemian Massif) revisited Hyperpotassic granulites from the Blanský les Massif (Moldanubian Zone, Bohemian Massif) revisited (en)
skos:prefLabel	Hyperpotassic granulites from the Blanský les Massif (Moldanubian Zone, Bohemian Massif) revisited Hyperpotassic granulites from the Blanský les Massif (Moldanubian Zone, Bohemian Massif) revisited (en)
skos:notation	RIV/00216208:11310/07:10001176!RIV10-MZP-11310___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GA205/03/0040), S, Z(MZP0002579801)
http://linked.open...iv/cisloPeriodika	1-2
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Janoušek, Vojtěch
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	425181
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/07:10001176
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	granulites; alkali feldspar syenites; high-pressure melting; geochemistry; Moldanubian Zone; Bohemian Massif (en)
http://linked.open.../riv/klicoveSlovo	alkali feldspar syenites high-pressure melting geochemistry granulites Bohemian Massif Moldanubian Zone
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[2621E8B4F0B6]
http://linked.open...i/riv/nazevZdroje	Journal of Geosciences
http://linked.open...in/vavai/riv/obor	DD
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Partial melting of rocks in the root zone of the Variscan orogenic belt (Moldanubian zone, Bohemian Massif)
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	52
http://linked.open...iv/tvurceVysledku	Erban, Vojtěch Janoušek, Vojtěch Míková, Jitka Finger, Fritz Krenn, Erwin
http://linked.open...n/vavai/riv/zamer	Geosciences for the Society of the 21st Century: from regional research to geological hazards and global changes.
issn	1802-6222
number of pages	40 (xsd:int)
http://localhost/t...ganizacniJednotka	11310

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