Journal
GEOLOGICA CARPATHICA
Volume 70, Issue 4, Pages 298-310Publisher
SLOVAK ACAD SCIENCES GEOLOGICAL INST
DOI: 10.2478/geoca-2019-0017
Keywords
SHRIMP dating; detrital zircon ages; provenance; palinspastic constraints
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Funding
- Slovak Research and Development Agency [APVV-0546-11]
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U-Pb (SHRIMP) detrital zircon ages from the Early Paleozoic meta-sedimentary rocks of the Northern Gemericum Unit (the Smrecinka Formation) were used to characterize their provenance. The aim was to compare and reconcile new analyses with previously published data. The detrital zircon age spectrum demonstrates two prominent populations, the first, Late Neoproterozoic (545 640 Ma) and the second, Paleoproterozoic (1.8-2.1 Ga), with a minor Archcan population (2.5-3.4 Ga). The documented zircon ages reflect derivation of the studied metasedimentary rocks from the Cadomian arc, which was located along the West African Craton. The acquired data supports close relations of the Northern Gemericum basement with the Annorican terranes during Neoproterozoic and Ordovician times and also a close palinspastic relation with the other crystalline basements of the Central Western Carpathians. In comparison, the detrital zircons from the Southern Gemericum basement and its Permian envelope indicate derivation from the Pan-African Belt-Saharan Metacraton provenance.
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