Early Permian Freshwater Silicified Stromatolites and Oolites
from the Krkonoše Piedmont Basin (Bohemian Massif):
Paleobiology, Environmental Setting and Early Diagenesis

J 2025

Early Permian Freshwater Silicified Stromatolites and Oolites from the Krkonoše Piedmont Basin (Bohemian Massif): Paleobiology, Environmental Setting and Early Diagenesis

VODRAZKOVA, Stanislava; Radek VODRAZKA; Tomáš KUMPAN; Juraj FRANCU; Markéta HOLÁ et. al.

Základní údaje

Originální název

Early Permian Freshwater Silicified Stromatolites and Oolites from the Krkonoše Piedmont Basin (Bohemian Massif): Paleobiology, Environmental Setting and Early Diagenesis

Autoři

VODRAZKOVA, Stanislava; Radek VODRAZKA; Tomáš KUMPAN (203 Česká republika, domácí); Juraj FRANCU; Markéta HOLÁ (203 Česká republika, domácí) a Karel SLAVÍČEK (203 Česká republika, domácí)

Vydání

Bulletin of Geosciences, Czech Geological Survey, 2025, 1214-1119

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10505 Geology

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.500 v roce 2024

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.3140/bull.geosci.1915

UT WoS

001538882700004

EID Scopus

2-s2.0-105011740457

Klíčová slova anglicky

early Permian; Krkonoše Piedmont Basin; stromatolites; oolites; cyanobacteria; silicification

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 2. 9. 2025 15:52, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Late Palaeozoic non-marine microbialites remain poorly documented despite their potential significance for understanding terrestrial ecosystems during this period of profound climatic and environmental change. Here we report exceptionally preserved lower Permian (Autunian regional stage ˜ Asselian-Sakmarian) silicified stromatolites and oolites from the Krkonoše Piedmont Basin (Bohemian Massif, Czech Republic). Despite their occurrence in Quaternary eluvial and colluvial deposits, multiple lines of evidence suggest formation in a shallow, ephemeral fluviolacustrine setting. The stromatolites display a vertical succession of different growth forms, including structures similar to modern sheath-forming cyanobacterial taxa that form fan-like and hemispheroidal colonies with characteristic upright growth, features especially common in modern streams and rivers. Early diagenetic silicification preserved not only delicate stromatolitic architectures but also microbial organic matter. The presence of volcaniclastic material within ooidal cortices and cores, as well as within the rock matrix, indicates contemporaneous volcanic input, which likely provided silica for early replacement of the primary carbonate fabric. This exceptional preservation, facilitated by rapid CaCO3 encrustations of microbial structures and subsequent early silicification, provides rare insights into early Permian terrestrial ecosystems.

Návaznosti

GC20-20785J, projekt VaV

Název: Pátrání po stopách biogenicity a způsobu alterace zrn mikrobiálních facií devonu a karbonu, příklady z Českého masivu

Investor: Grantová agentura ČR, Pátrání po stopách biogenicity a způsobu alterace zrn mikrobiálních facií devonu a karbonu, příklady z Českého masivu

Citovat

VODRAZKOVA, Stanislava; Radek VODRAZKA; Tomáš KUMPAN; Juraj FRANCU; Markéta HOLÁ a Karel SLAVÍČEK. Early Permian Freshwater Silicified Stromatolites and Oolites from the Krkonoše Piedmont Basin (Bohemian Massif): Paleobiology, Environmental Setting and Early Diagenesis. Bulletin of Geosciences. Czech Geological Survey, 2025, roč. 100, č. 2, s. 159-186. ISSN 1214-1119. Dostupné z: https://doi.org/10.3140/bull.geosci.1915.

@article{2515398,
   author = {Vodrazkova, Stanislava and Vodrazka, Radek and Kumpan, Tomáš and Francu, Juraj and Holá, Markéta and Slavíček, Karel},
   article_number = {2},
   doi = {https://doi.org/10.3140/bull.geosci.1915},
   keywords = {early Permian; Krkonoše Piedmont Basin; stromatolites; oolites; cyanobacteria; silicification},
   language = {eng},
   issn = {1214-1119},
   journal = {Bulletin of Geosciences},
   title = {Early Permian Freshwater Silicified Stromatolites and Oolites from the Krkonoše Piedmont Basin (Bohemian Massif): Paleobiology, Environmental Setting and Early Diagenesis},
   url = {http://www.geology.cz/bulletin/contents/art1915},
   volume = {100},
   year = {2025}
}

TY  - JOUR
ID  - 2515398
AU  - Vodrazkova, Stanislava - Vodrazka, Radek - Kumpan, Tomáš - Francu, Juraj - Holá, Markéta - Slavíček, Karel
PY  - 2025
TI  - Early Permian Freshwater Silicified Stromatolites and Oolites from the Krkonoše Piedmont Basin (Bohemian Massif): Paleobiology, Environmental Setting and Early Diagenesis
JF  - Bulletin of Geosciences
VL  - 100
IS  - 2
SP  - 159-186
EP  - 159-186
PB  - Czech Geological Survey
SN  - 12141119
KW  - early Permian
KW  - Krkonoše Piedmont Basin
KW  - stromatolites
KW  - oolites
KW  - cyanobacteria
KW  - silicification
UR  - http://www.geology.cz/bulletin/contents/art1915
N2  - Late Palaeozoic non-marine microbialites remain poorly documented despite their potential significance for understanding terrestrial ecosystems during this period of profound climatic and environmental change. Here we report exceptionally preserved lower Permian (Autunian regional stage ˜ Asselian-Sakmarian) silicified stromatolites and oolites from the Krkonoše Piedmont Basin (Bohemian Massif, Czech Republic). Despite their occurrence in Quaternary eluvial and colluvial deposits, multiple lines of evidence suggest formation in a shallow, ephemeral fluviolacustrine setting. The stromatolites display a vertical succession of different growth forms, including structures similar to modern sheath-forming cyanobacterial taxa that form fan-like and hemispheroidal colonies with characteristic upright growth, features especially common in modern streams and rivers. Early diagenetic silicification preserved not only delicate stromatolitic architectures but also microbial organic matter. The presence of volcaniclastic material within ooidal cortices and cores, as well as within the rock matrix, indicates contemporaneous volcanic input, which likely provided silica for early replacement of the primary carbonate fabric. This exceptional preservation, facilitated by rapid CaCO3 encrustations of microbial structures and subsequent early silicification, provides rare insights into early Permian terrestrial ecosystems.
ER  -

VODRAZKOVA, Stanislava; Radek VODRAZKA; Tomáš KUMPAN; Juraj FRANCU; Markéta HOLÁ a Karel SLAVÍČEK. Early Permian Freshwater Silicified Stromatolites and Oolites from the Krkonoše Piedmont Basin (Bohemian Massif): Paleobiology, Environmental Setting and Early Diagenesis. \textit{Bulletin of Geosciences}. Czech Geological Survey, 2025, roč.~100, č.~2, s.~159-186. ISSN~1214-1119. Dostupné z: https://doi.org/10.3140/bull.geosci.1915.

Přehled o publikaci