International Field Workshop on 'The Triassic of eastern France'

Stop 2.7 - Florémont (N57-E23 road cuttings): Middle Keuper (‘Marnes irisées
moyennes’ and ‘Marnes irisées supérieures’ Fms, with Eo-Cimmerian unconformity)
In the first part of the outcrop (noted 2.7a, Fig. 25), the three units of the 'Marnes irisées moyennes'
can be sampled: 'Grès à roseaux', 'Argiles bariolées intermédiaires' and 'Dolomie de Beaumont' Fms.
At the second point (noted 2.7b, Fig. 25), the Eo-Cimmerian unconformity (Fig. III.2, IV.1) can be
observed, from the other side of the main road, between the anhydrite sebkha deposits of the ‘Argiles de
Chanville’ Fm and the dolomite playa deposits of the ‘Argiles bariolées dolomitiques’ Fm (Fig. 26). The
basal dolomite bed of the latter is, as in many other places in south Lorraine, the only one displaying many
quartz sand grains, about 1 mm in diameter and orange-to-pink coloured. They are coarser than those found
in the 'Grès à roseaux'
Figure 25: Location of the outcrop of Florémont
Figure 26: Panorama of Florémont outcrop showing the Eo-Cimmerian unconformity between the ‘Argiles de
Chanvilel and the ‘Argiles bariolées dolomitiques’ formations.
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