Fig. 6

MTD 4 interpretations. The primary direction of translation is SE ➔ NW. BSS—basal shear surface; ESS—en-echelon sigmoidal segments. a Schematic depiction of the domains and main kinematic features within MTD 4. b Coherency map of structurally flattened BSS. c Arbitrary seismic cross section transecting MTD 4 from the headwall domain to the toe domain (location shown in b). d Structurally flattened coherency slice showing a lateral margin of MTD 4 (location is shown in a). Note the en-echelon sigmoidal segments. e Arbitrary seismic cross section along the lateral margin of MTD 4 (location of the line shown in d)