207Pb/206Pb ages and Hf isotope composition of zircons from sedimentary rocks of the Ukrainian shield: Crustal growth of the south-western part of East European craton from Archaean to Neoproterozoic

Leonid Shumlyanskyy*, Chris Hawkesworth, Bruno Dhuime, Kjell Billström, Stefan Claesson, Craig Storey

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

16 Citations (Scopus)

Abstract

The results of simultaneous LA-ICP-MS measurements of 207Pb/206Pb and Hf isotope ratios are reported for zircons separated from five Ukrainian shield sedimentary rocks: (1) c. 3.0Ga quartzite of the Bug Series; (2) c. 2.0Ga quartzite of the Topilnya Series; (3) c. 1.75Ga quartzite of the Ovruch Series; (4) c. 1.2-1.0Ga sandstone of the Polissya Series; and (5) c. 0.6Ga conglomerate of the Volyn Series. The age-Hf isotope (eHfT) data indicate four main crustal growth events at 3.75, 3.20-3.15, 2.2-2.0, and 1.5Ga in the south-western part of the East European craton (EEC). An additional rather minor event could have place at 2.5-2.4Ga. The oldest event is represented by enderbites of the Bug domain in the south-western part of the Ukrainian shield. The second crust-forming event occurred at c. 3.20-3.15Ga and it is documented by detrital zircons separated from the Bug Series quartzite and metasediments of the Soroki greenstone belt, Azov domain. A small number of zircons with positive eHfT values reveal some input of the juvenile material into the crust at 2.5-2.4Ga, whereas the 2.2-2.0Ga event is dominated by zircons with positive eHfT values. The youngest event is represented by numerous zircons that crystallized at c. 1.5Ga. The possible sources of these zircons are the rock complexes of the south-western part of the Fennoscandian shield.

Original languageEnglish
Pages (from-to)39-54
Number of pages16
JournalPrecambrian Research
Volume260
DOIs
Publication statusPublished - 1 May 2015

Keywords

  • Archaean
  • Crustal growth
  • East European craton
  • Hf isotopes
  • Proterozoic
  • Zircon

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