A proposed new global stratotype for Aeronian Stage of the Silurian System: Hlásná Třebaň section, Czech Republic
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F18%3A00000009" target="_blank" >RIV/00025798:_____/18:00000009 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/18:00490800
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/abs/10.1111/let.12250" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1111/let.12250</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/let.12250" target="_blank" >10.1111/let.12250</a>
Alternative languages
Result language
angličtina
Original language name
A proposed new global stratotype for Aeronian Stage of the Silurian System: Hlásná Třebaň section, Czech Republic
Original language description
The current Global Stratotype Section and Point (GSSP) for the Aeronian Stage (Llandovery Series, Silurian System), on Trefawr track in the Llandovery area of Wales, is an inadequate marker for precise, global, correlation. The International Subcommission on Silurian Stratigraphy has, therefore, undertaken the selection of a new GSSP for this level. The lowest occurrence of the graptolite Demirastrites triangulatus,1.38 m above the base of the black-shale succession of the Zelkovice Formation at the Hlasna Treban section in Central Bohemia, is proposed to mark the base of the Aeronian Stage. The section, which fulfils all formal requirements for stratotype of a chronostratigraphical unit, should be considered as a candidate for the new GSSP. An abundant, well-preserved, diverse graptolite fauna occurs through the section along with common chitinozoans, which indicate that the Spinachitina maennili Biozone spans the boundary interval. The section comprises the lower–middle Aeronian(D. triangulatus–Lituigraptus convolutus graptolite biozones) along with underlying Rhuddanian (Akidograptus ascensus–Coronograptus cyphus biozones) and Hirnantian strata. Several graptolite genera of primary importance in global correlation Demirastrites, Petalolithus, Rastrites and Campograptus) first appear in the lower part of the triangulatus Biozone. The structurally simple section is somewhat condensed, but there is a uniform succession of black shale without any evidence of disconformityin the broad boundary interval. The Corg isotope record exhibits a minorpositive excursion just above the base of the triangulatus Biozone, whereas TOC and N isotope and elemental geochemical records provide evidence for uninterrupted sedimentation under stable, anoxic conditions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GA14-16124S" target="_blank" >GA14-16124S: Refinement of lower Silurian chronostratigraphy: proposal of new GSSPs of the Aeronian and Homerian stages</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
Lethaia
ISSN
0024-1164
e-ISSN
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Volume of the periodical
51
Issue of the periodical within the volume
3
Country of publishing house
NO - NORWAY
Number of pages
32
Pages from-to
357-388
UT code for WoS article
000434278200004
EID of the result in the Scopus database
2-s2.0-85031327960