Zircon and whole-rock Zr/Hf ratios as markers of the evolution
of granitic magmas: Examples from the Teplice caldera (Czech
Republic/Germany)

J 2017

Zircon and whole-rock Zr/Hf ratios as markers of the evolution of granitic magmas: Examples from the Teplice caldera (Czech Republic/Germany)

BREITER, Karel and Radek ŠKODA

Basic information

Original name

Zircon and whole-rock Zr/Hf ratios as markers of the evolution of granitic magmas: Examples from the Teplice caldera (Czech Republic/Germany)

Authors

BREITER, Karel (203 Czech Republic) and Radek ŠKODA (203 Czech Republic, belonging to the institution)

Edition

Mineralogy and Petrology, WIEN, Springer Wien, 2017, 0930-0708

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10504 Mineralogy

Country of publisher

Austria

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.664

RIV identification code

RIV/00216224:14310/17:00095568

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1007/s00710-017-0509-z

UT WoS

000407743900002

Keywords in English

Zr/Hf value; Zircon; Teplice caldera; Rhyolite; Rare-metal granite; Cinovec deposit

Abstract

V originále

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.

Links

GA14-13600S, research and development project

Name: Otevřené procesy v granitoidech z pohledu zonality minerálů a horninových textur

Investor: Czech Science Foundation

MUNI/A/1316/2015, interní kód MU

Name: Geologické, geodynamické a environmentální procesy východního okraje Českého masívu (Acronym: Geodyn)

Investor: Masaryk University, Category A

Citovat

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). 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.

@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.

Detailed Information on Publication Record