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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