About: Fingerprinting sources of orogenic plutonic rocks from Variscan belt with lithium isotopes and possible link to subduction-related origin of some A-type granites

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About: Fingerprinting sources of orogenic plutonic rocks from Variscan belt with lithium isotopes and possible link to subduction-related origin of some A-type granites Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Lithium data are presented for plutonic rocks from the Western Carpathians, Slovakia, that were generated throughout the complete Variscan orogenic cycle. I-type granites show a limited range of δ7Li, contrasting with the large variations found in S-type granites and orthogneisses of distinct ages. An exclusively heavy Li isotope signature (δ7Li > 4.7‰) found in A-type granites rules out several commonly accepted petrogenetic scenarios. It most probably reflects a derivation of A-type granites from a mantle wedge modified by slab-derived fluids. Mafic rocks (gabbros and diorites), associated with occurrences of granites, are uniformly Li-rich and isotopically light (< - 0.5‰), precluding a direct derivation from the mantle. These signatures testify to their cumulate origin. The presumed dichotomy between the sources and processes leading to generation of S- and I-type granitic magmas does not seem to be reflected by Li isotope signatures in a simple and globally valid manner. Lithium data are presented for plutonic rocks from the Western Carpathians, Slovakia, that were generated throughout the complete Variscan orogenic cycle. I-type granites show a limited range of δ7Li, contrasting with the large variations found in S-type granites and orthogneisses of distinct ages. An exclusively heavy Li isotope signature (δ7Li > 4.7‰) found in A-type granites rules out several commonly accepted petrogenetic scenarios. It most probably reflects a derivation of A-type granites from a mantle wedge modified by slab-derived fluids. Mafic rocks (gabbros and diorites), associated with occurrences of granites, are uniformly Li-rich and isotopically light (< - 0.5‰), precluding a direct derivation from the mantle. These signatures testify to their cumulate origin. The presumed dichotomy between the sources and processes leading to generation of S- and I-type granitic magmas does not seem to be reflected by Li isotope signatures in a simple and globally valid manner. (en)
Title	Fingerprinting sources of orogenic plutonic rocks from Variscan belt with lithium isotopes and possible link to subduction-related origin of some A-type granites Fingerprinting sources of orogenic plutonic rocks from Variscan belt with lithium isotopes and possible link to subduction-related origin of some A-type granites (en)
skos:prefLabel	Fingerprinting sources of orogenic plutonic rocks from Variscan belt with lithium isotopes and possible link to subduction-related origin of some A-type granites Fingerprinting sources of orogenic plutonic rocks from Variscan belt with lithium isotopes and possible link to subduction-related origin of some A-type granites (en)
skos:notation	RIV/00025798:_____/10:00000042!RIV11-GA0-00025798
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(GA205/07/0992), Z(MZP0002579801)
http://linked.open...iv/cisloPeriodika	1-2
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Janoušek, Vojtěch Magna, Tomáš
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	Česká geologická služba
http://linked.open...dnocenehoVysledku	259229
http://linked.open...ai/riv/idVysledku	RIV/00025798:_____/10:00000042
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	lithium isotopes,neodymium isotopes,granitic typology,lower crust,subduction,A-typegranite,Western Carpathians (en)
http://linked.open.../riv/klicoveSlovo	subduction lithium isotopes A-typegranite granitic typology lower crust neodymium isotopes Western Carpathians
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[CC59ADCAF41A]
http://linked.open...i/riv/nazevZdroje	Chemical Geology
http://linked.open...in/vavai/riv/obor	DD
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Application of non-traditional isotopes in the petrogenesis of granitic rocks
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	274
http://linked.open...iv/tvurceVysledku	Janoušek, Vojtěch Magna, Tomáš Wiechert, Uwe Kohút, Milan Oberli, Felix
http://linked.open...ain/vavai/riv/wos	000279094700009
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	0009-2541
number of pages	14 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Fingerprinting sources of orogenic plutonic rocks from Variscan belt with lithium isotopes and possible link to subduction-related origin of some A-type granites

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