Pyrite generations from the permian/triassic boundary section, Bálvány, Bükk Mts., Hungary

Zajzon Norbert and Vető István: Pyrite generations from the permian/triassic boundary section, Bálvány, Bükk Mts., Hungary. In: Acta mineralogica-petrographica, (48). pp. 49-53. (2008)

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Three pyrite generations were described in the Bálvány Composite Section based on morphology, WDX and S34S data. Among them the 0.1- 0.2 mm size, isotopically light euhedral pyrite is early diagenetic. This generation was found in the whole section. The "boundary shale" is characterised by microbial pyrite framboids, which formed on the surface, or close to the surface of the sediment around the redox boundary with the presence of dysoxic bottom-water. This, and the laminated structure of the sediment prove anoxic conditions in the whole sediment. Most probably there was dysoxic bottom water. The third generation is also euhedral, but has a larger grain size (1-2 mm). Based on 534S data and sphalerite inclusions, this generation is of late diagenetic or hydrothermal origin. This type occurs only in the shale and the top of the underlying limestone. The sulphides of the section are almost totally oxidised.

Item Type: Article
Heading title: Articles
Journal or Publication Title: Acta mineralogica-petrographica
Date: 2008
Volume: 48
ISSN: 0365-8066
Page Range: pp. 49-53
Language: English
Publisher: Department of Mineralogy, Geochemistry and Petrology, University of Szeged
Place of Publication: Szeged
Related URLs:
Uncontrolled Keywords: Földtan, Ásványtan, Kőzettan
Additional Information: Bibliogr.: 53. p. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.05. Earth and related environmental sciences
Date Deposited: 2016. Oct. 17. 09:24
Last Modified: 2022. Aug. 26. 08:33

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