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@article{1410937,
author = {Breiter, Karel and Škoda, Radek},
article_location = {WIEN},
article_number = {4},
doi = {http://dx.doi.org/10.1007/s00710-017-0509-z},
keywords = {Zr/Hf value; Zircon; Teplice caldera; Rhyolite; Rare-metal granite; Cinovec deposit},
language = {eng},
issn = {0930-0708},
journal = {Mineralogy and Petrology},
title = {Zircon and whole-rock Zr/Hf ratios as markers of the evolution of granitic magmas: Examples from the Teplice caldera (Czech Republic/Germany)},
volume = {111},
year = {2017}
}
TY - JOUR
ID - 1410937
AU - Breiter, Karel - Škoda, Radek
PY - 2017
TI - Zircon and whole-rock Zr/Hf ratios as markers of the evolution of granitic magmas: Examples from the Teplice caldera (Czech Republic/Germany)
JF - Mineralogy and Petrology
VL - 111
IS - 4
SP - 435-457
EP - 435-457
PB - Springer Wien
SN - 09300708
KW - Zr/Hf value
KW - Zircon
KW - Teplice caldera
KW - Rhyolite
KW - Rare-metal granite
KW - Cinovec deposit
N2 - Hafnium contents and Zr/Hf ratios were studied in zircons and their parent rocks from three magmatic suites associated with the Teplice caldera, Eastern Erzgebirge: rhyolite and dacite from the peraluminous Schonfeld Unit, relatively younger A-type Teplice rhyolite, and post-caldera A-type biotite and zinnwaldite granite and greisen. New data suggest that zircon crystallizing from a geochemically less evolved volatile- and water-poor melt is, compared to the host rock, relatively Hf-depleted, while zircon crystallizing from an evolved volatile- and water-rich melt has a Zr/Hf value approximately identical to that of the parental melt. Zr/Hf values in zircon did not change substantially either during greisenization, or during low-temperature alteration after metamictization. Zr/Hf values in the whole rock may serve as a sensitive indicator of magmatic fractionation of evolved granitic melts, as they are only negligibly influenced by the following hydrothermal processes. Zr/Hf values in individual cogenetic zircon grains are scattered but their general evolution trend in the rock series is consistent with the evolution of the whole-rock Zr/Hf values.
ER -
BREITER, Karel a Radek ŠKODA. Zircon and whole-rock Zr/Hf ratios as markers of the evolution of granitic magmas: Examples from the Teplice caldera (Czech Republic/Germany). \textit{Mineralogy and Petrology}. WIEN: Springer Wien, 2017, roč.~111, č.~4, s.~435-457. ISSN~0930-0708. Dostupné z: https://dx.doi.org/10.1007/s00710-017-0509-z.
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