Silica diagenesis in Eocene carbonates of the Okçular Formation, Turkey: inferences from field observations and petrography – discussion

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DOI:

https://doi.org/10.7306/gq.1868

Abstract

Yeşilot Kaplan (2025) provides important insights into the typology and petrography of Eocene cherts in Turkey. But, several aspects of his study need critical assessment and some important details have been undervalued or omitted, this in turn resulting in incomplete, or in some instances erroneous, interpretation of the observations made. This discussion covers the following questions raised by Yeşilot Kaplan (2025): (1) Why is the Eocene Epoch characterized by widespread chert formation? (2) What are the origins of bedded and nodular cherts? (3) What are the silica forms relevant to silica diagenesis (i.e., the opaline group)? (4) What is the relationship between porosity and displacive vs replacive growth of secondary silica?

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Published

2026-10-20

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Recently accepted paper

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Discussion

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