How far did the Cadomian ?terranes travel from Gondwana during early Palaeozoic? A critical reappraisal based on detrital zircon geochronology
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10386546" target="_blank" >RIV/00216208:11310/18:10386546 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/18:00488620
Result on the web
<a href="https://doi.org/10.1080/00206814.2017.1334599" target="_blank" >https://doi.org/10.1080/00206814.2017.1334599</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/00206814.2017.1334599" target="_blank" >10.1080/00206814.2017.1334599</a>
Alternative languages
Result language
angličtina
Original language name
How far did the Cadomian ?terranes travel from Gondwana during early Palaeozoic? A critical reappraisal based on detrital zircon geochronology
Original language description
In this paper, laser ablation ICP-MS U-Pb detrital zircon ages are used to discuss provenance and early Palaeozoic palaeogeography of continental fragments that originated in the Cadomian-Avalonian active margin of Gondwana at the end of Precambrian, were subsequently extended during late Cambrian to Early Ordovician opening of the Rheic Ocean, and finally were incorporated into and reworked within the European Variscan belt. The U-Pb detrital zircon age spectra in the analysed samples, taken across a late Neproterozoic (Ediacaran) to Early/Middle Devonian metasedimentary succession of the southeastern Tepla-Barrandian unit, Bohemian Massif, are almost identical andexhibit a bimodal age distribution with significant peaks at about 2.1-1.9Ga and 650-550Ma. We interpret the source area as an active margin comprising a cratonic (Eburnean) hinterland rimmed by Cadomian volcanic arcs and we suggest that this source was available at all times during deposition. The new detrital zircon ages also corroborate the West African provenance of the Tepla-Barrandian and correlative Saxothuringian and Moldanubian units, questioned in some palaeogeographic reconstructions. Finally, at variance with the still popular concept of the Cadomian basement units as far-travelled terranes, we propose that early Palaeozoic basins, developed upon the Cadomian active margin, were always part of a wide Gondwana shelf and drifted northwards together before involvement in the Variscan collisional belt.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GA16-11500S" target="_blank" >GA16-11500S: Sedimentary record and mechanics of collapse of orogenic belts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Geology Review
ISSN
0020-6814
e-ISSN
—
Volume of the periodical
60
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
20
Pages from-to
319-338
UT code for WoS article
000423625500004
EID of the result in the Scopus database
2-s2.0-85020200569