High-resolution conodont biostratigraphy in two key sections
from the Carnic Alps (Grüne Schneid) and Graz Paleozoic (Trolp)
- implications for the biozonation concept at the
Devonian-Carboniferous boundary

J 2020

High-resolution conodont biostratigraphy in two key sections from the Carnic Alps (Grüne Schneid) and Graz Paleozoic (Trolp) - implications for the biozonation concept at the Devonian-Carboniferous boundary

KAISER, Sandra I.; Tomáš KUMPAN a Michael W. RASSER

Základní údaje

Originální název

High-resolution conodont biostratigraphy in two key sections from the Carnic Alps (Grüne Schneid) and Graz Paleozoic (Trolp) - implications for the biozonation concept at the Devonian-Carboniferous boundary

Autoři

KAISER, Sandra I.; Tomáš KUMPAN a Michael W. RASSER

Vydání

NEWSLETTERS ON STRATIGRAPHY, STUTTGART, GEBRUDER BORNTRAEGER, 2020, 0078-0421

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10505 Geology

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.974

Kód RIV

RIV/00216224:14310/20:00114272

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1127/nos/2019/0520

UT WoS

000535184500001

EID Scopus

2-s2.0-85086637012

Klíčová slova anglicky

Famennian-Tournaisian boundary; Hangenberg Biocrisis; pelagic limestones; early Protognathodus fauna; sulcata/kuehni Zone

Štítky

14315010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 17. 8. 2020 13:34, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Devonian-Carboniferous boundary successions are globally characterized by conodont-free siliciclastics, stratigraphic gaps, or uncertainties among the first occurrence of biostratigraphically relevant index fossils. This resulted from regionally varying palaeoenvironmental conditions caused by global major environmental changes related to the Hangenberg Crisis. The ongoing search for the ultimate causes of mass extinctions at the end of the Devonian requires a fine biostratigraphic framework, which is developed during the last half of century. This study provides new biostratigraphic implications both from the new and re-evaluated conodont material from two classical continuous pelagic limestone successions of two different geological units in Austria. The Upper Famennian and Lower Tournaisian successions at Trolp (Graz Paleozoic) and Grane Schneid (Camic Alps) have been studied in very high-resolution. This study provides the first record of a joint first occurrence of typical morphotypes of Protognathodus kuehni and Siphonodella sulcata both at Trolp and Grune Schneid in the same biostratigraphic level. This indicates a synchronous first appearance and supports the practicability of the joint sulcata/kuehni Zone previously established. The sampling resulted in a detailed record of the evolution of the biostratigraphically significant Protognathodus fauna, among them Protognathodus kockeli which is currently tested as a potential index for the new Devonian-Carboniferous boundary position. Our analysis revealed taxonomic complexity of Pr. kockeli itself, and in the lineage from its ancestor Protognathodus collinsoni, and to its descendent Protognathodus kuehni. Therefore, using the first occurrence of Protognathodus kockeli as new index fossil for the Devonian-Carboniferous boundary would face the same problem as exists with the current index Siphonodella sulcata which is under revision, and a distinctive conodont-based definition of the system boundary is, under the current taxonomic state of knowledge, difficult to maintain.

Návaznosti

GA16-11563S, projekt VaV

Název: Nejranější karbonské greenhouse-icehouse klimatické oscilace - multidisciplinární přístup

Investor: Grantová agentura ČR, Nejranější karbonské greenhouse-icehouse klimatické oscilace - multidisciplinární přístup

Citovat

KAISER, Sandra I.; Tomáš KUMPAN a Michael W. RASSER. High-resolution conodont biostratigraphy in two key sections from the Carnic Alps (Grüne Schneid) and Graz Paleozoic (Trolp) - implications for the biozonation concept at the Devonian-Carboniferous boundary. NEWSLETTERS ON STRATIGRAPHY. STUTTGART: GEBRUDER BORNTRAEGER, 2020, roč. 53, č. 3, s. 249-274. ISSN 0078-0421. Dostupné z: https://doi.org/10.1127/nos/2019/0520.

@article{1674558,
   author = {Kaiser, Sandra I. and Kumpan, Tomáš and Rasser, Michael W.},
   article_location = {STUTTGART},
   article_number = {3},
   doi = {https://doi.org/10.1127/nos/2019/0520},
   keywords = {Famennian-Tournaisian boundary; Hangenberg Biocrisis; pelagic limestones; early Protognathodus fauna; sulcata/kuehni Zone},
   language = {eng},
   issn = {0078-0421},
   journal = {NEWSLETTERS ON STRATIGRAPHY},
   title = {High-resolution conodont biostratigraphy in two key sections from the Carnic Alps (Grüne Schneid) and Graz Paleozoic (Trolp) - implications for the biozonation concept at the Devonian-Carboniferous boundary},
   url = {https://dx.doi.org/10.1127/nos/2019/0520},
   volume = {53},
   year = {2020}
}

TY  - JOUR
ID  - 1674558
AU  - Kaiser, Sandra I. - Kumpan, Tomáš - Rasser, Michael W.
PY  - 2020
TI  - High-resolution conodont biostratigraphy in two key sections from the Carnic Alps (Grüne Schneid) and Graz Paleozoic (Trolp) - implications for the biozonation concept at the Devonian-Carboniferous boundary
JF  - NEWSLETTERS ON STRATIGRAPHY
VL  - 53
IS  - 3
SP  - 249-274
EP  - 249-274
PB  - GEBRUDER BORNTRAEGER
SN  - 00780421
KW  - Famennian-Tournaisian boundary
KW  - Hangenberg Biocrisis
KW  - pelagic limestones
KW  - early Protognathodus fauna
KW  - sulcata/kuehni Zone
UR  - https://dx.doi.org/10.1127/nos/2019/0520
L2  - https://dx.doi.org/10.1127/nos/2019/0520
N2  - Devonian-Carboniferous boundary successions are globally characterized by conodont-free siliciclastics, stratigraphic gaps, or uncertainties among the first occurrence of biostratigraphically relevant index fossils. This resulted from regionally varying palaeoenvironmental conditions caused by global major environmental changes related to the Hangenberg Crisis. The ongoing search for the ultimate causes of mass extinctions at the end of the Devonian requires a fine biostratigraphic framework, which is developed during the last half of century. This study provides new biostratigraphic implications both from the new and re-evaluated conodont material from two classical continuous pelagic limestone successions of two different geological units in Austria. The Upper Famennian and Lower Tournaisian successions at Trolp (Graz Paleozoic) and Grane Schneid (Camic Alps) have been studied in very high-resolution. This study provides the first record of a joint first occurrence of typical morphotypes of Protognathodus kuehni and Siphonodella sulcata both at Trolp and Grune Schneid in the same biostratigraphic level. This indicates a synchronous first appearance and supports the practicability of the joint sulcata/kuehni Zone previously established. The sampling resulted in a detailed record of the evolution of the biostratigraphically significant Protognathodus fauna, among them Protognathodus kockeli which is currently tested as a potential index for the new Devonian-Carboniferous boundary position. Our analysis revealed taxonomic complexity of Pr. kockeli itself, and in the lineage from its ancestor Protognathodus collinsoni, and to its descendent Protognathodus kuehni. Therefore, using the first occurrence of Protognathodus kockeli as new index fossil for the Devonian-Carboniferous boundary would face the same problem as exists with the current index Siphonodella sulcata which is under revision, and a distinctive conodont-based definition of the system boundary is, under the current taxonomic state of knowledge, difficult to maintain.
ER  -

KAISER, Sandra I.; Tomáš KUMPAN a Michael W. RASSER. High-resolution conodont biostratigraphy in two key sections from the Carnic Alps (Grüne Schneid) and Graz Paleozoic (Trolp) - implications for the biozonation concept at the Devonian-Carboniferous boundary. \textit{NEWSLETTERS ON STRATIGRAPHY}. STUTTGART: GEBRUDER BORNTRAEGER, 2020, roč.~53, č.~3, s.~249-274. ISSN~0078-0421. Dostupné z: https://doi.org/10.1127/nos/2019/0520.

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