Proposal of a tectono-sedimentary evolution of the Alsting anticline. The cross-sections are not in scale. (a) Continuous deposition from the Westphalian until the Early Stephanian lower sub-sequence. (b) Thrusting and folding of the Westphalian-Stephanian sub-sequence leading to the formation of the Alsting thrust fold and its subsequent uplift and erosion. (c) Renew of subsidence and deposition of the Upper Stephanian sub-sequence as drape strata.