Page 4 - CatalanoInfuso&Sulli_1995

R. CATALANO ET AL.

20km mmn r:-:-:--:1 ~ lr_---_-1j - ~~ l~:....:....:...

UlllillJ ~ ~
1 2 3 4 5 6 78

Fig. 3. Geologica/ cross-sections, based an reinterpretation of seismic profiles, from Western Bank across Egadi Islands to Adventure Bank.
The figure shows from the top: (1) Plio-Pleistocene deposits; (2) crystalline and sedimentary Kabilian-Ca/abrian or equiva/ent units,
overthrust an (3) detached and accreted flysch units; (4) interna/ domains deep-water carbonate imbricates; (5) platform carbonate imbricates
(Panormide and Pre-Panormide Units); (6) platform carbonate thrusts (Trapanese and Saccense Units), overlain by the deformed Lower-
Upper Miocene foreland basin deposits (7); basement (8) . Gand C indicate origina/ seismic profi/es crossing the geologica/ sections.

Fig. 4. NW-SE seismic line of the Egadi Thrust Front area showing a tectonic wedge of mainly carbonate platform- derived thrust units. To
the extreme south-east, Trapanese- type carbonate units are overlain by Lower Miocene and Upper Miocene foreland basin deposits.

the Adventure Thrust Front (ATF, Fig. Lower Messinian-Upper Tortonian sinian-Upper Tortonian horizons un-
2). It overlies (b), a lower defonned deposits equivalent to rocks that confonnably overlie Lower Tortonian
carbonate substratum. were assigned to the Terravecchia to Lower Miocene clastics, locally
(a) The thin-layered wedge, lithologi- Fonnation on land. These deposits stacked in thrust slices (Catalano et
cally represented by well calibrated fonned the clastic fili of the late al., 1988). A post-middle Pliocene
terrigenous and clastic carbonate de- Tortonian foredeep (Catalano et al. , erosional surface fonns the top of
posits, includes, from the top down- 1989; Argnani et al., 1989), with N-S the entire sedimentary body. Thin-
wards: slightly folded and faulted trending depocentres. Defonned Mes- skinned thrust packages of Upper

182 © 1995 Blackwell Science Ltd, Terra Nova, 7, 179-188.