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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 and 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, vol.~111, No~4, p.~435-457. ISSN~0930-0708. Available from: https://dx.doi.org/10.1007/s00710-017-0509-z.
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