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Fig. 3 | Journal of Palaeogeography

Fig. 3

From: Macro- and microfeatures of Early Cambrian dolomitic microbialites from Tarim Basin, China

Fig. 3

Outcrop and thin section features of Intervals I and II of the Xiaoerblak Formation (Cambrian Series 2) of the Sugaitblak section, Tarim Basin, Xinjiang, China. a Black thin-bedded dolomicritic dolostone in Interval I. A single layer is 2–10 cm thick. Hammer length = 35 cm. b Micrograph of birdseye structures (bir) in lower part of Interval I. The sparry calcite filled granulated birdseyes are variable in size (0.1–1 mm in diameter) and are unevenly distributed. c Thin-bedded laminites in the upper part of Interval I with straight parallel laminae. d and e Black honeycomb dolostones in Interval II with hollow pores and calcite-filled pores

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