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GEOMORPHOLOGICAL EVOLUTION OF WESTERN SICILY, ITALY 85

slopes, and topographic highs and lows due to tectonic structu rally- controlled complex slopes, and other landforms
movements; canyons, V-valleys, and other landforms due produced by differential erosion also influenced by high relief;
to down- cutting processes triggered by tectonic uplift, as landforms due to deep-seated gravitational slope deformations
well as stair- steps of marine terraces, river terraces, and pla- (DSGSDs), landslides, and generally denudation phenomena
nation or low-relief surfaces; fault-line scarp/slopes, following the increased relief.

Fig. 5. Geological and geomorphological interpretation of the areas of Fig. 4. Landforms (uppercase letters): MT marine terrace; RV river
valley; ISS inclined structural surface; TZ-RV triangle zone-type river valley; RFLS resequent fault-line scarp; ANMT anticline mountain;
RT river terrace; LRS low-relief surface; ACC abandoned coastal cliff; FS fault scarp; KD karst depression. Deposits and rocks (lowercase
letters): cs coastal deposit; cl clastic deposit; mrcb marly carbonate rock; cly clayey rock; cb carbonate rock; ev evaporite rock; al alluvial
deposit; sl slope deposit. Stratigraphic units (after dash): MrSy Marsala synthem; AgFm Agrigento formation; TrUn Trubi unit. Geochrono-
logic/chronostratighraphic units (in parenthesis): Qua Quaternary; MIS5.5 Tyrrhenian; Md Ple Middle Pleistocene; Lw-Md Ple Lower–
Middle Pleistocene; Em-Sic Emilian– Sicilian; Sant Santernian; Cal Calabrian; Gel Gelasiano; Up Pli upper Pliocene; LwPli lower Pliocene;
Ms Messinian; Tr-Ms Tortonian– Messinian; Cz Cenozoic; Mz Mesozoic.
GEOLOGICA CARPATHICA, 2017, 68, 1, 80 – 93