Chromium-rich illite/smectite in the basal Balinka Conglomerate of the Upper Carboniferous-Permian Boskovice Basin (Bohemian Massif). Annales Societatis Geologorum Poloniae

• Autorzy: Hršelová Pavla , Houzar Stanislav , Buriánek David , Všianský Dalibor , Szczerba Marek , Ciesielska Zuzanna , Štelcl Jindřich , Nehyba Slavomír

Identyfikatory

DOI

doi.org/10.14241/asgp.2023.05

• Języki publikacji: EN

Abstrakty

EN

The Upper Carboniferous polymictic Balinka Conglomerate was deposited along the western margin of the Boskovice Basin (eastern part of the Bohemian Massif). Angular aggregates of deep-green chromium-rich interstratified clay mineral R1-illite(0.8)/smectite (I/S) are present exclusively in the basal part of this unit. The textural position of chromium-bearing I/S (0.77–2.88 wt.% Cr2O3; 0.040–0.153 apfu Cr) in the conglomerate matrix indicates a genetic link with the highly altered chromium spinel, which is preserved in the relics. The source of Cr-rich spinelides was serpentinized peridotites in the adjacent Moldanubicum (Gföhl Unit). The formation of I/S is related to diagenetic processes in the conglomerate matrix. The fluids would have relatively high fugacity of CO₂ and activity of K+. K/Ar ages of 284.1 ± 7.7 and 276.3 ± 7.4 Ma (lower Permian – Kungurian/Artinskian age) confirmed the diagenetic origin of this I/S.

Słowa kluczowe

EN

Chromium illite-smectite; Cr-rich spinelides; Balinka Conglomerate; diagenetic alteration; Upper Carboniferous; Boskovice Basin; Bohemian Massif

• Wydawca: Polskie Towarzystwo Geologiczne
• Czasopismo: Annales Societatis Geologorum Poloniae
• Rocznik: 2023
• Tom: Vol. 93, No. 2
• Strony: 195--210
• Opis fizyczny: Bibliogr. 82 poz., fot., rys., tab., wykr.

Twórcy

autor

Hršelová Pavla

• Department of Mineralogy and Petrography, Moravian Museum, Zelnýtrh 6, 659 37, Brno, Czech Republic

• https://orcid.org/0000-0001-6860-6410

autor

Houzar Stanislav

• Department of Mineralogy and Petrography, Moravian Museum, Zelný trh 6, 659 37, Brno, Czech Republic

• https://orcid.org/0000-0002-5539-038X

autor

Buriánek David

• Czech Geological Survey, branch Brno, Leitnerova 22, 602 00 Brno, Czech Republic

• https://orcid.org/0000-0002-9201-7402

autor

Všianský Dalibor

• Department of Geological Sciences, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic

• https://orcid.org/0000-0001-9769-072X

autor

Szczerba Marek

• Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, 31-002 Kraków, Poland

• https://orcid.org/0000-0002-0485-886X

autor

Ciesielska Zuzanna

• Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, 31-002 Kraków, Poland

• https://orcid.org/0000-0002-3749-5874

autor

Štelcl Jindřich

• Department of Geological Sciences, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
• Department of Biology, Faculty of Education, Masaryk University, Poříčí 7, 603 00 Brno, Czech Republic

autor

Nehyba Slavomír

• Department of Geological Sciences, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic

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