Late cambrian-ordovician northeastern gondwanan terranes in the basement of the Apuseni Mountains, Romania

I. Balintoni, C. Balica, Mihai N Ducea, L. Zaharia, Fukun Chen, M. Cliveti, H. P. Hann, Li Qiu Li, L. Ghergari

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The pre-Alpine basement of the Apuseni Mountains (Romanian Carpathians) comprises three terranes: Someş, Baia de Arieş and Biharia. Metaigneous rocks within these terranes record Late Cambrian Ordovician U-Pb zircon crystallization ages. Two samples from an orthogneiss layer in the Someş terrane yielded an age of 459.8 ± 2.7 Ma. In the Baia de Arieş terrane, an augen gneiss yielded an age of 470.8 ± 3.8 Ma, a porphyroid yielded an age of 467.8 ± 3.8 Ma and two metagranites yielded ages of 467.8 ± 4.7 Ma and 467.1 ± 3.9 Ma, respectively. Three samples from a metagranitoid outcrop located in the lower part of the Biharia terrane yielded an age of 495.0 ± 2.1 Ma. Three other samples from a metabasite layer situated lithostratigraphically several hundred metres above the metagranitoid yielded an age of 477.8 ± 3.2 Ma. Detrital U/Pb zircon ages from a paragneiss interlayered within the Baia de Arieş terrane scatter between 548 and 3518 Ma. Detrital zircon ages together with the inherited ages recorded by magmatic zircon populations suggest a northeastern Gondwanan provenance for the Someş, Baia de Arieş and Biharia terranes, adjacent to the Arabian-Nubian Shield. Lead loss in some zircons is interpreted to have taken place during the Variscan orogeny.

Original languageEnglish (US)
Pages (from-to)1131-1145
Number of pages15
JournalJournal of the Geological Society
Volume167
Issue number6
DOIs
StatePublished - Dec 2010

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terrane
Ordovician
mountain
zircon
metaigneous rock
augen gneiss
orthogneiss
metabasite
Hercynian orogeny
provenance
shield
outcrop
crystallization

ASJC Scopus subject areas

  • Geology

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Late cambrian-ordovician northeastern gondwanan terranes in the basement of the Apuseni Mountains, Romania. / Balintoni, I.; Balica, C.; Ducea, Mihai N; Zaharia, L.; Chen, Fukun; Cliveti, M.; Hann, H. P.; Li, Li Qiu; Ghergari, L.

In: Journal of the Geological Society, Vol. 167, No. 6, 12.2010, p. 1131-1145.

Research output: Contribution to journalArticle

Balintoni, I, Balica, C, Ducea, MN, Zaharia, L, Chen, F, Cliveti, M, Hann, HP, Li, LQ & Ghergari, L 2010, 'Late cambrian-ordovician northeastern gondwanan terranes in the basement of the Apuseni Mountains, Romania', Journal of the Geological Society, vol. 167, no. 6, pp. 1131-1145. https://doi.org/10.1144/0016-76492009-156
Balintoni, I. ; Balica, C. ; Ducea, Mihai N ; Zaharia, L. ; Chen, Fukun ; Cliveti, M. ; Hann, H. P. ; Li, Li Qiu ; Ghergari, L. / Late cambrian-ordovician northeastern gondwanan terranes in the basement of the Apuseni Mountains, Romania. In: Journal of the Geological Society. 2010 ; Vol. 167, No. 6. pp. 1131-1145.
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