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Journal of Palaeogeography
Fig. 6 | Journal of Palaeogeography

Fig. 6

From: Different accretion and diagenetic patterns within the fabrics of the Permian–Triassic boundary microbialites on the Leye isolated carbonate platform, South China Block

Fig. 6

Mesoscopic and microscopic characteristics of the digitate thrombolites. a Polished slab of the middle part of domical digitate thrombolites; b Photomicrograph of the digitate clot, showing microsparry–sparry components and micritic interstitial parts. Plane-polarized light; c Polished slab of the uppermost digitate thrombolites; d Photomicrograph of the uppermost digitate clot, showing microsparry–sparry components and micritic interstitial parts. Some calcite crystal fans are marked by arrows. Plane-polarized light; e Hemispheric crystal fan comprising many elongate crystals. Plane-polarized light; f Transverse section showing regular hexagonal crystals. Plane-polarized light

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