Fig. 4
From: Glaciofluvial sequences recording the Birrfeld Glaciation (MIS 5d–2) in the Bern area, Swiss Plateau
a Succession at the MÜN pit including photos of the lithofacies associations: LFA 1—Alternation of gravel and sand beds, fining upward; LFA 2—Amalgamation of sand beds with projected locations of IRSL samples GUG20-01 and GUG20-02; LFA 3—Alternation of gravel and sand beds, coarsening upward; and LFA 5—Matrix-supported diamict enriched in quartzite, granite, and metamorphic pebbles. b Grain-supported gravel bed of LFA 1 with few crushed pebbles. c Amalgamation of massive, horizontally bedded, and cross-bedded sand beds (Sm, Sh, and Sc (St: trough-cross-bedded); Table 2) in LFA 2. d Sheard silt and clay layer in a sand bed in the lower part of LFA 3. e Pebbles and boulders embedded in a silt and sand matrix represent the diamict of LFA 5. Bottom right: Polished, striated, and bullet-shaped dark limestone