DC pole | Wartość | Język |
dc.contributor.author | Burda, Jolanta | - |
dc.contributor.author | Woskowicz-Ślęzak, Beata | - |
dc.contributor.author | Klotzli, Urs | - |
dc.contributor.author | Gawęda, Aleksandra | - |
dc.date.accessioned | 2019-04-12T08:11:39Z | - |
dc.date.available | 2019-04-12T08:11:39Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Geochronometria, Vol. 46, Iss. 1 (2019), s. 25-36 | pl_PL |
dc.identifier.issn | 1897-1695 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/8814 | - |
dc.description.abstract | This study presents the first zircon U-Pb LA-MC-ICP-MS ages and whole-rock Rb/Sr and Sm/Nd data from exotic blocks (Bugaj and Andrychów) from the Western Outer Carpathians (WOC) flysch. The CL images of the zircon crystals from both samples reveal typical magmatic textures characterized by a well-defined concentric and oscillatory growth zoning. A concordia age 580.1 ± 6.0 Ma of the zircons from the Bugaj sample is considered to represent the crystallization age of this granite. The zircon crystals from the Andrychów orthogneiss yield an age of 542 ± 21 Ma, in-terpreted as the uppermost Proterozoic, magmatic crystallization age of the granitoid protholith. The initial (at ca. 580 Ma) 87Sr/86Sr ratios of the Bugaj granitoids (0.72997 and 0.72874) are highly radio-genic, pointing to the assimilation of an older, possibly strongly Rb enriched source to the Bugaj melt. The Nd isotope systematics (εNd580 –1.4 and 0.4) also point to a significant contribution of such a dis-tinct mantle source. On the basis of the sequence of magmatic events obtained from U-Pb zircon ages, we suggest that exotic mega blocks deposited to the WOC basins were related to the Brunovistulicum Terrane. They belong to the group of Vendian/Cambrian granitoids representing the latest, post-tectonic expression of the Cadomian cycle. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa-Użycie niekomercyjne-Bez utworów zależnych 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/pl/ | * |
dc.subject | exotics | pl_PL |
dc.subject | zircon U-Pb dating | pl_PL |
dc.subject | Western Outer Carpathians | pl_PL |
dc.subject | palaeogeography | pl_PL |
dc.subject | Brunovistulicum | pl_PL |
dc.title | Cadomian protolith ages of exotic mega blocks from Bugaj and Andrychów (Western outer Carpathians, Poland) and their palaeogeographic significance | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1515/geochr-2015-0102 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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