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Statements

Subject Item
n2:RIV%2F67985831%3A_____%2F12%3A00382702%21RIV13-AV0-67985831
rdf:type
n10:Vysledek skos:Concept
dcterms:description
The Krušné hory/Erzgebirge Mountains is one of the best-known provinces of granite magmatism and associated metallogenesis in Europe. Variscan magmatic activity in the Krušné hory area spanned the period from 330-295 Ma. For much of this time, two types of magma were generated and emplaced in close proximity in this province. Strongly peraluminous P-rich (S-type) melts were formed alongside slightly peraluminous P-poor melts (A-type). Two suites of strongly peraluminous P, F, Li, Rb, Cs, U, Sn-rich and Zr, Th, Y, HREE-poor magmas were intruded in rapid succession over a period of about 10 Ma (about 330-320 Ma) over the entire region of the Krušné hory. Several peraluminous rhyolitic dykes near Gottesberg mark an isolated event at about 295 Ma. Slightly peraluminous F, Li, Rb, Cs, Sn, Zr, Y, HREE-rich and P-poor magmas were intruded in several events separated in space and time (325-295 Ma). Both magmatic episodes culminated with strongly fractionated subvolcanic granite intrusions, accompanied by explosive brecciation and followed by Sn + W mineralization of greisen type. Successive volcanic eruption of rhyolites and dacites of S-type, and rhyolites of A-type in the Altenberg-Teplice Caldera demonstrate the close temporal and spatial relationship between these two types of magma. When these two geochemically distinct types of rock are in direct contact, then the rocks of A-type are always younger. The absolute time difference between the two types can range from less than 1 Ma (the first eruption of the Teplice rhyolite versus the Schönfeld dacite in the ATC) to about 15 Ma (eruption of rhyolites at Gottesberg versus emplacement of the Eibenstock granite). Assumed protolith of the Variscan A-type granites in the Krušné hory area is a granulitic residue in the lower crust left after production of the Cadomian peraluminous granites, while the Variscan S-type granites originated via partial melting of fertile crustal rocks not affected by the Cadomian melting event. The Krušné hory/Erzgebirge Mountains is one of the best-known provinces of granite magmatism and associated metallogenesis in Europe. Variscan magmatic activity in the Krušné hory area spanned the period from 330-295 Ma. For much of this time, two types of magma were generated and emplaced in close proximity in this province. Strongly peraluminous P-rich (S-type) melts were formed alongside slightly peraluminous P-poor melts (A-type). Two suites of strongly peraluminous P, F, Li, Rb, Cs, U, Sn-rich and Zr, Th, Y, HREE-poor magmas were intruded in rapid succession over a period of about 10 Ma (about 330-320 Ma) over the entire region of the Krušné hory. Several peraluminous rhyolitic dykes near Gottesberg mark an isolated event at about 295 Ma. Slightly peraluminous F, Li, Rb, Cs, Sn, Zr, Y, HREE-rich and P-poor magmas were intruded in several events separated in space and time (325-295 Ma). Both magmatic episodes culminated with strongly fractionated subvolcanic granite intrusions, accompanied by explosive brecciation and followed by Sn + W mineralization of greisen type. Successive volcanic eruption of rhyolites and dacites of S-type, and rhyolites of A-type in the Altenberg-Teplice Caldera demonstrate the close temporal and spatial relationship between these two types of magma. When these two geochemically distinct types of rock are in direct contact, then the rocks of A-type are always younger. The absolute time difference between the two types can range from less than 1 Ma (the first eruption of the Teplice rhyolite versus the Schönfeld dacite in the ATC) to about 15 Ma (eruption of rhyolites at Gottesberg versus emplacement of the Eibenstock granite). Assumed protolith of the Variscan A-type granites in the Krušné hory area is a granulitic residue in the lower crust left after production of the Cadomian peraluminous granites, while the Variscan S-type granites originated via partial melting of fertile crustal rocks not affected by the Cadomian melting event.
dcterms:title
Nearly contemporaneous evolution of the A- and S-type fractionated granites in the Krušné hory/Erzgebirge Mts., Central Europe Nearly contemporaneous evolution of the A- and S-type fractionated granites in the Krušné hory/Erzgebirge Mts., Central Europe
skos:prefLabel
Nearly contemporaneous evolution of the A- and S-type fractionated granites in the Krušné hory/Erzgebirge Mts., Central Europe Nearly contemporaneous evolution of the A- and S-type fractionated granites in the Krušné hory/Erzgebirge Mts., Central Europe
skos:notation
RIV/67985831:_____/12:00382702!RIV13-AV0-67985831
n10:predkladatel
n15:ico%3A67985831
n3:aktivita
n18:P
n3:aktivity
P(GAP210/10/1105), P(IAA300130801)
n3:cisloPeriodika
15 October
n3:dodaniDat
n11:2013
n3:domaciTvurceVysledku
n12:2882442
n3:druhVysledku
n19:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
153473
n3:idVysledku
RIV/67985831:_____/12:00382702
n3:jazykVysledku
n16:eng
n3:klicovaSlova
A-type granite; Bohemiam Massif; Erzgebirge; granite classification; Krušné hory Mts.; S-type granite
n3:klicoveSlovo
n8:Kru%C5%A1n%C3%A9%20hory%20Mts. n8:S-type%20granite n8:Bohemiam%20Massif n8:Erzgebirge n8:granite%20classification n8:A-type%20granite
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[AD7066DB649C]
n3:nazevZdroje
Lithos
n3:obor
n6:DB
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
1
n3:projekt
n5:IAA300130801 n5:GAP210%2F10%2F1105
n3:rokUplatneniVysledku
n11:2012
n3:svazekPeriodika
151
n3:tvurceVysledku
Breiter, Karel
n3:wos
000309374700008
s:issn
0024-4937
s:numberOfPages
17
n13:doi
10.1016/j.lithos.2011.09.022