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Journal of Palaeogeography
Fig. 11 | Journal of Palaeogeography

Fig. 11

From: Sedimentary characteristics of microbialites influenced by volcanic eruption: a case study from the Lower Cretaceous Shipu Group in Zhejiang Province, East China

Fig. 11

a A hand specimen from the interface between carbonates and tuffite. The upper part is tuffite and the lower part is limestone; b Photomicrograph of laminated fine tuffite including pyrite (black color). 5×, plane-polarized light; c Photomicrograph of limestone showing fan-shaped growth pattern of stromatolite. 1.25×, plane-polarized light; d EPMA and EDS analyses show that the laminated fine tuffite is composed of aluminosilicate minerals such as feldspars

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