Fig. 8

a Location map of the old Bôle quarry and of the type-section of the Bôle Member along the Merdasson stream (Neuchâtel, Switzerland). b Transition between the Neuchâtel and the Bôle members with the basal Marne de la Russille Bed, which is framed by discontinuity surfaces D.Ba2 and D.Ba3, and followed by the upper series of the Bôle Member. c Focus on the bioperforated and bioencrusted hardground on top of the Pierre jaune de Neuchâtel. d Middle part of the Bôle Member with the discontinuity surface D.Ba4 separating units 2 and 3. e Upper part of the Bôle Member with the discontinuity surface D.Ba5 separating units 3 and 4. f Focus on the bioperforated and bioencrusted hardground of D.Ba5. g Transition from the Bôle Member to the Vallorbe Member by the intermediary of a last marly intercalation