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SE to N-S. Here sedimentary fill has been
affected by at Ieast two different shortening
episodes during regional extension.
Basi n 1 shows the m ost complex pattem of
deformation along its northwestem side.
A st ructural high o riented between N-S
and NW-SE seen on both the bathymetric and
the P lio-Quatemary isochron map, separates
the two basins. Both basins have their most
defom1ed areas adjacem to it This high is tlie
prolongation of the Egadi Valley that
connects this area to the Pantelleria Trough to
the SE.
Geologica! examp les and modelling
(Christie-Blick and Biddle 1985) of a region
References
Antonelli M., Franciosi R., Pezzi G ., Querci
A .. Ronco G. P.. Vezzani F. 1988.
Paleogeographic evo1ution and structural C hris ti e-Blick N.. Bidd1e K .T . 1985 .
setting of the northem s ide of the Sicily
Channel. Mem. Soc. Geol. It., 41, 141-
157. Blick N. (eds). Strike-slip deformation,
Argnani A .. Comini S., Torelli L 1986.
Neogcne-Quatemary foredeep system in
thc Strait of Sicily. Mem. Soc. Geol. IL, C.N.R. 1987 Neotectonic Map of Ita1y.
36.1.23-130.
Argnant A.. Comini S .. Torelli L.. Zitellini N. Sestini G .. Flores G. 1986 Petroleum potenual
1987. Diachronous fc redeep-system in the
1\'eogene-Quaternary of the Strait of
Sicily. Mem. Soc. Geol. It. , 38. 407--417.
Cawlano R.. D' Argcnio B. 1986. Geology of
thc nonhem sidc of the Sicily channel. In:
64
affected by left latera1 simple shear show
structures having forrns analogous to those on
this part of the Sicilian-Tunisian Platform.
We interpret this N-S lineament connected
to the Egadi Valley as a sinistral strike-slip
fau1 t acti ng as a transfer zone. This zone
separates an area of the Sicily channel
characterized by large NE-SW oriented
extension. the trough system, from an area to
the west were extension effects are negligible.
Acknowledgements. Gino Zini is thanked
for figures drawing. Contribution n. 907 of
Istituto per la Geologia MaFina- CNR.
S.G.F. & S.G.I. , .. Oceans", Villafranche
Sur-Mer, 1-3 dee. Abstracts. pag. 23.
Deformation and basin fonnation a1ong
strike-slip faults. In Biddle K.T.. Christie-
basin fonnation and sedimentation. Spec.
Publ. Soc. Econ. Paleont. Miner. , 37, 1-34.
Litografia Artistica Cartografica, Firenze:
of thc thrust bell and foretroughs of Sicily.
In: Halbouty M.T. (ed), Future petroleum
provinces of the world. A.A.P.G. Mem. 40.
567-584.