New U-Pb zircon ages from Cadomian basement of the Balkan fold-and- thrust belt of northern Bulgaria

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10493173" target="_blank" >RIV/00216208:11310/24:10493173 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=OuqB_1wb7Q" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=OuqB_1wb7Q</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.52215/rev.bgs.2024.85.3.43" target="_blank" >10.52215/rev.bgs.2024.85.3.43</a>

Jazyk výsledku

angličtina

Název v původním jazyce

New U-Pb zircon ages from Cadomian basement of the Balkan fold-and- thrust belt of northern Bulgaria

Popis výsledku v původním jazyce

New U-Pb zircon ages are preliminarily reported here from various high-grade units within the overall low-grade Balkan fold-and-thrust belt of northern Bulgaria. The Stakevtsi gneisses yielded Cadomian ages interpreted as magma crystallization ages ranging from 651 +/- 8 Ma to 601 +/- 3 Ma, some of the samples exhibited significant proportion of Mesoproterozoic ages with peaks at 1.6 and 1.5 Ga. Paragneisses in the Barzyia Massif exhibit complex U-Pb zircon age patterns, with age peaks typically at 580 Ma and 540 Ma, but also Paleo- and Mesoproterozoic and younger at 430 Ma to 310 Ma. The Divchovoto gneisses yielded age spectra with a minor contribution of Archean, Paleo- and Mesoproterozoic grains and a dominant population of Cadomian ages at 610 Ma. In summary, most of the samples point to the north African provenance, however, some of the Stakevtsi gneisses indicate rather a Baltican provenance. This suggests that the pre-Variscan tectonics and juxtaposition of different terranes was complex in this segment the former Cadomian orogenic belt, but also the possible proximity of Baltica to Gondwana at the end of Neoproterozoic.

Název v anglickém jazyce

New U-Pb zircon ages from Cadomian basement of the Balkan fold-and- thrust belt of northern Bulgaria

Popis výsledku anglicky

New U-Pb zircon ages are preliminarily reported here from various high-grade units within the overall low-grade Balkan fold-and-thrust belt of northern Bulgaria. The Stakevtsi gneisses yielded Cadomian ages interpreted as magma crystallization ages ranging from 651 +/- 8 Ma to 601 +/- 3 Ma, some of the samples exhibited significant proportion of Mesoproterozoic ages with peaks at 1.6 and 1.5 Ga. Paragneisses in the Barzyia Massif exhibit complex U-Pb zircon age patterns, with age peaks typically at 580 Ma and 540 Ma, but also Paleo- and Mesoproterozoic and younger at 430 Ma to 310 Ma. The Divchovoto gneisses yielded age spectra with a minor contribution of Archean, Paleo- and Mesoproterozoic grains and a dominant population of Cadomian ages at 610 Ma. In summary, most of the samples point to the north African provenance, however, some of the Stakevtsi gneisses indicate rather a Baltican provenance. This suggests that the pre-Variscan tectonics and juxtaposition of different terranes was complex in this segment the former Cadomian orogenic belt, but also the possible proximity of Baltica to Gondwana at the end of Neoproterozoic.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/GA23-06708S" target="_blank" >GA23-06708S: Stáří detritických zirkonů jako nástroj pro interpretaci provenance teránů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Spisanie na Bʺlgarskoto geologičesko družestvo

ISSN

0007-3938

e-ISSN

1314-8680

Svazek periodika

85

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

BG - Bulharská republika

Počet stran výsledku

3

Strana od-do

43-45

Kód UT WoS článku

001386027000002

EID výsledku v databázi Scopus

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