Quantitative structural analyses and numerical modelling of ...

5 - 8 LEXA ET AL.: COLLISION IN WEST CARPATHIANSFigure 4. Idealized cross sections across the southern and eastern margin of the Vepor promontory.(a) Southwestern section of the studied area characteristic of 40 km wide and 70 km long outcrop of thewestern Vepor promontory. Southeastern margin of this crystalline complex is rimmed by low-grade LateCarboniferous metasedimentary formation (Slatviná Formation) intruded by peraluminous granites ofuncertain age. Farther to the southeast, a belt of Permian greenschist facies metasediments occursfollowed by belt of Early Carboniferous greenschist facies slates (Ochtiná Formation) of variable width.The Gemer Unit consists exclusively of extremely reduced Gelnica Group. The southernmost part of thesection consists mostly of carbonates of Meliata accretionary wedge and Silica nappes. (b) NW-SEtrending contact of the western Vepor promontory with the Gemer Unit. The NE edge of the Veporbasement is rimmed by the Late Carboniferous formation (Slatviná Formation) and by Permian andTriassic greenschist facies grade metasandstones of the Vepor cover sequences. Along this border theLate Carboniferous formation is pinching out to the north so that the Permian rocks of the coversequences directly overlie the Vepor basement. Farther to the east, the Permian metasediments areoverlain by slates of the Gelnica Group. Large klippen of Permian rocks and metacarbonates of the Bôrkanappe overlie the Gelnica Formation. The legend is same as for Figure 1.Figure 5. (opposite) Field photographs of main structural features. (a) Steep cleavage (160/70) of the GCF affected by latesubhorizontal kink bands (350/25) in axial part of GCF (Štós Saddle). (b) Weakly developed south dipping axial planecleavage (204/45) affecting early fabric (90/60) in the northern part of the Gelnica Group (road cut north of GemerskáPoloma). (c) Weak spaced cleavage (150/30) reworking Variscan metamorphic fabrics (335/60) of the Rakovec Group(Nálepkovo). (d) Steep cleavage (150/80) and vertical noncylindrical folds of TGSZ affecting early composite S 0–1 fabricof Triassic limestones (Blh valley near Ploské village). (e) Late steep cleavage of TGSZ (338/85) reworking the earlycleavage of the Gemer Cleavage Fan (178/70) in the Gelnica Group (Smolnícka Huta).92