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Swiss Journal of Geosciences
Fig. 4 | Swiss Journal of Geosciences

Fig. 4

From: U–Pb zircon provenance of Triassic sandstones, western Swiss Alps: implications for geotectonic history

Fig. 4

Photomicrographs of Vieux Emosson Formation and Late Carboniferous sandstones: a (plane light) and b (crossed nicols) Late Carboniferous sample LC-4. Note illite “whiskers” around grains and albitized potassium feldspar grain (arrow); c (plane light) and d (crossed nicols) Vieux Emosson sample EM-2. Note abundant potassium feldspar grains with yellow sodium cobaltinitrite stain

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