Table 2 Summary of the lithofacies associations. Interpretation of depositional environment is based on Miall (1978) and Buechi et al. (2017)

LFA 1

Gm, Gc, Sm, Sh, Sc

Alternation of gravel and sand beds, fining upward

Braided river, development from proximal to distal^a

LFA 2

Sm, Sh, Sc

Amalgamation of sand beds

Braided river, distal^a

LFA 3

Gm, Gc, Sh, Sc, Fl

Alternation of gravel and sand beds, coarsening upward

Braided river, development from distal to proximal^a

LFA 4

Gm, Gc,

Amalgamation of gravel beds, coarsening upward

Proximal braided river^a

LFA 5

Dmm-1 or Dmm-2, SFl(s)

Matrix-supported diamict with a high contribution of quartzite, granite and gneiss pebbles (Dmm-1) or dark limestone pebbles (Dmm-2). Sometimes deformed sand and fines (SFl(s) underlies Dmm-2

Glacial till of the MIS 2 glacier and glacio-tectonised sand and fines^b