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Fig. 2 | Journal of Palaeogeography

Fig. 2

From: Petrography of Middle Jurassic to Early Cretaceous sandstones in the Kutch Basin, western India: Implications on provenance and basin evolution

Fig. 2

Photomicrographs of sandstones under cross-polarized light. a General arkosic–subarkosic character of Jhuran Formation, with arrows pointing to a few feldspars showing twinning; b Carbonate cement filling pore spaces and replacing framework grains in Jhuran Formation, with arrows pointing to fully-replaced plagioclase feldspars identified by the faint remnants of twinning; c Magnified view of a plagioclase feldspar (arrow) in Jhuran Formation showing replacement by cement; d Polycrystalline quartz (arrow) with tectonic fabric in Bhuj Formation

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