Clay mineral authigenesis as an example of organomineralization
in Paleozoic coated grains and peloids

J 2025

Clay mineral authigenesis as an example of organomineralization in Paleozoic coated grains and peloids

VODRÁŽKOVÁ, Stanislava; Magdalena KOUBOVÁ; Axel MUNNECKE; Tomáš KUMPAN; Radek VODRÁŽKA et. al.

Základní údaje

Originální název

Clay mineral authigenesis as an example of organomineralization in Paleozoic coated grains and peloids

Autoři

VODRÁŽKOVÁ, Stanislava; Magdalena KOUBOVÁ; Axel MUNNECKE; Tomáš KUMPAN; Radek VODRÁŽKA; Ondřej POUR a Jiří FRÝDA

Vydání

Sedimentary Geology, AMSTERDAM, Elsevier Science, 2025, 0037-0738

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10505 Geology

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.900 v roce 2024

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1016/j.sedgeo.2025.106912

UT WoS

001509669500001

EID Scopus

2-s2.0-105007543049

Klíčová slova anglicky

Paleozoic; Organomineralization; Aluminosilicate authigenesis; Coated grains; Peloids

Štítky

14315010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 28. 8. 2025 15:11, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

The formation of clay minerals in marine environments, referred to as reversed weathering, represents an important process significantly affecting seawater chemistry. In this study, we describe organomineralization represented by clay mineral authigenesis associated with remnants of carbonaceous microstructures, interpreted as extracellular polymeric substances (EPS), from Silurian, Devonian, and Carboniferous coated grains (ooids, oncoids, and cortoids) and peloids (micritized grains). Multiple lines of evidence support the authigenic origin of these clay minerals: (1) Systematic spatial relationships with organic templates demonstrated through BSE imaging and elemental mapping; (2) Consistent qualitative elemental compositions across samples of varying ages, depositional settings, and burial histories; (3) Systematic textural, morphological, and compositional differences from detrital clay minerals, including filamentous texture, diffuse irregular boundaries, and higher Mg/(Al + Mg) and Si/(Si + Al) ratios; (4) XRD identification of authigenic I/S R3 with a diagnostic 1Md polytype structure; and (5) Consistency with the well-documented association of authigenic clay minerals with microbial surfaces, as evidenced by numerous laboratory experiments. The documentation of authigenic clays associated with microbial structures in these common constituents of carbonate rocks suggests a potentially significant impact on element sequestration at the sediment-water interface and in the pore-water environment. We conclude that when properly contextualized, authigenic clay minerals can serve as indicators of former microbial surfaces.

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

VODRÁŽKOVÁ, Stanislava; Magdalena KOUBOVÁ; Axel MUNNECKE; Tomáš KUMPAN; Radek VODRÁŽKA; Ondřej POUR a Jiří FRÝDA. Clay mineral authigenesis as an example of organomineralization in Paleozoic coated grains and peloids. Sedimentary Geology. AMSTERDAM: Elsevier Science, 2025, roč. 484–485, July, s. 106912-106926. ISSN 0037-0738. Dostupné z: https://doi.org/10.1016/j.sedgeo.2025.106912.

@article{2514140,
   author = {Vodrážková, Stanislava and Koubová, Magdalena and Munnecke, Axel and Kumpan, Tomáš and Vodrážka, Radek and Pour, Ondřej and Frýda, Jiří},
   article_location = {AMSTERDAM},
   article_number = {July},
   doi = {https://doi.org/10.1016/j.sedgeo.2025.106912},
   keywords = {Paleozoic; Organomineralization; Aluminosilicate authigenesis; Coated grains; Peloids},
   language = {eng},
   issn = {0037-0738},
   journal = {Sedimentary Geology},
   title = {Clay mineral authigenesis as an example of organomineralization in Paleozoic coated grains and peloids},
   url = {https://www.sciencedirect.com/science/article/pii/S0037073825001071},
   volume = {484–485},
   year = {2025}
}

TY  - JOUR
ID  - 2514140
AU  - Vodrážková, Stanislava - Koubová, Magdalena - Munnecke, Axel - Kumpan, Tomáš - Vodrážka, Radek - Pour, Ondřej - Frýda, Jiří
PY  - 2025
TI  - Clay mineral authigenesis as an example of organomineralization in Paleozoic coated grains and peloids
JF  - Sedimentary Geology
VL  - 484–485
IS  - July
SP  - 106912
EP  - 106912
PB  - Elsevier Science
SN  - 00370738
KW  - Paleozoic
KW  - Organomineralization
KW  - Aluminosilicate authigenesis
KW  - Coated grains
KW  - Peloids
UR  - https://www.sciencedirect.com/science/article/pii/S0037073825001071
N2  - The formation of clay minerals in marine environments, referred to as reversed weathering, represents an important process significantly affecting seawater chemistry. In this study, we describe organomineralization represented by clay mineral authigenesis associated with remnants of carbonaceous microstructures, interpreted as extracellular polymeric substances (EPS), from Silurian, Devonian, and Carboniferous coated grains (ooids, oncoids, and cortoids) and peloids (micritized grains). Multiple lines of evidence support the authigenic origin of these clay minerals: (1) Systematic spatial relationships with organic templates demonstrated through BSE imaging and elemental mapping; (2) Consistent qualitative elemental compositions across samples of varying ages, depositional settings, and burial histories; (3) Systematic textural, morphological, and compositional differences from detrital clay minerals, including filamentous texture, diffuse irregular boundaries, and higher Mg/(Al + Mg) and Si/(Si + Al) ratios; (4) XRD identification of authigenic I/S R3 with a diagnostic 1Md polytype structure; and (5) Consistency with the well-documented association of authigenic clay minerals with microbial surfaces, as evidenced by numerous laboratory experiments. The documentation of authigenic clays associated with microbial structures in these common constituents of carbonate rocks suggests a potentially significant impact on element sequestration at the sediment-water interface and in the pore-water environment. We conclude that when properly contextualized, authigenic clay minerals can serve as indicators of former microbial surfaces.
ER  -

VODRÁŽKOVÁ, Stanislava; Magdalena KOUBOVÁ; Axel MUNNECKE; Tomáš KUMPAN; Radek VODRÁŽKA; Ondřej POUR a Jiří FRÝDA. Clay mineral authigenesis as an example of organomineralization in Paleozoic coated grains and peloids. \textit{Sedimentary Geology}. AMSTERDAM: Elsevier Science, 2025, roč.~484–485, July, s.~106912-106926. ISSN~0037-0738. Dostupné z: https://doi.org/10.1016/j.sedgeo.2025.106912.

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