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Swiss Journal of Palaeontology
Fig. 14 | Swiss Journal of Palaeontology

Fig. 14

From: New biostratigraphical data (calcareous nannofossils, ammonites) and Early to Late Barremian transition in the Urgonien Jaune facies and Marnes de la Russille complex of the Swiss Jura Mountains

Fig. 14

a, b La Sarraz–Les Buis quarry Sect. (8/3/2020), channel infill of Marnes de la Russille (MRu) with LSBMRu0-9 samples positioned (red star and circles), the transitional change of colour between LSBMRu4 and LSBMRu5 indicates the Early/Late Barremian boundary. c, d Eclépens quarry Sect. (24/6/2018), transition of the highest Marnes de la Russille (MRu) between Urgonien Jaune (UJ) and Urgonien Blanc (UB) facies, with coloured marls partly rubefied (d, sample ECMRu10). e, f La Sarraz–Les Buis quarry Sect. (8/3/2020), paleokarst with Late Eocene infilling of red clays and marls (Siderolithic deposits) in the lower part of the massive UB limestones. Scale: hammer (red frame in c, e) = 31.5 cm long

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