The halite crystal casts are visible on the lower bedding surface of a light grey, yellowish calcareous silty arenite bed, which is sandwiched between yellowish grey to beige dolomitic marlstones. Very rarely, poorly preserved, usually smaller casts of halite crystals also occur on the upper surface of the bed. The lower and upper surfaces of the bed are uneven. The bed is composite. Planar lamination is visible in its lower part, while the upper part shows wave–ripple cross lamination. The bed is built of grains ranging from 0.03 mm to 0.13 mm in diameter. Its framework consists of quartz and feldspar grains and subordinate mica flakes. The grains are cemented by poikilitopic calcite (Fig. 4A, B). The individual cement crystals of non-ferroan calcite spar reach 6 mm across. Irregular pyrite concretions, up to 4 cm across, and small individual pyrite crystals are scattered on the bedding surfaces as well as inside the bed. Larger sulphide concretions show poikilitopic textures, where quartz and feldspar grains and mica flakes are involved in nodular pyrite overgrowths (Fig. 4B). Underlying and overlying thin dolomitic marlstones consist mainly of fine dolomite crystals and clay minerals with an admixture of quartz silt cemented with carbonate mud.
In the study bed, lamination is underlined by mica flakes and small pyrite crystals. The planar laminae in the lower part of the bed are up to 3 mm thick. The lamina set is up to 15 mm thick. Its top is mostly irregular, undulating, and erosionally truncated. The overlying part of the bed displays cross lamination; laminae are up to 1 mm thick and lamina sets (2–7 mm thick) are erosionally bounded. Distinctly tangential foresets, opposite dip directions of laminae in adjacent sets, and an irregular, undulating lower set boundary are features indicating the wave–ripple cross lamination (see De Raff et al., 1977) in this part of the bed studied. Disturbances of primary lamination, such as sink-hole structures and dewatering pipes above the larger casts, are visible in a section perpendicular to the bedding and also in horizontal sections (Figs. 5–6).