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Swiss Journal of Geosciences
Fig. 14 | Swiss Journal of Geosciences

Fig. 14

From: New insights on the Early Cretaceous (Hauterivian–Barremian) Urgonian lithostratigraphic units in the Jura Mountains (France and Switzerland): the Gorges de l’Orbe and the Rocher des Hirondelles formations

Fig. 14

a Location map of the Fort de l’Écluse Member type-sections in the locality of the same name (Ain and Haute-Savoie, France). b Transition from the GDO Fm to the RDH Fm. The Cul du Nozon Bed is here missing and the “Oolithe caviar” directly tops the Pont des Pierres Bed by the intermediary of the discontinuity surface D.Ha7. The “Oolithe caviar” is separated from the Coral-rich unit by the intermediary of the discontinuity surface D.Ba1 and its above marly level. c General view of the RDH Formation from the opposite side of the Fort de l’Écluse. d Focus on the bored et bioencrusted discontinuity surface D.Ba3 along the road D908a. e Focus on the Rivière Member along the road D1206 near the old customs post. f Focus on the Heteraster couloni-rich marly-limestone of the Rivière Member. g Transition from the Rivière Member to the Vallorbe Member near the old customs post. h Top of the Vallorbe Member which is epikarstified. i Thin section in the foraminifer-rich lagoonal facies of the Vallorbe Member

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