Structural setting in the central Sicily FTB as a premise for hydrocarbon exploration

Category Paleontology and Stratigraphy
Group GSI.IR
Location International Geological Congress,oslo 2008
Author Catalano, Raimondo۱; Gatti, Valter۲; Avellone, Giuseppe۱; Basilone, Luca۱; Frixa, Alfredo۲; Sulli, Attilio۱; Lena, Gabriele۱
Holding Date 11 October 2008

Central Sicily is part of the Maghrebian Sicilian FTB, a segment of the Alpine collisional belt, described as a result of both post-collisional convergence between Africa and Europe and roll-back of the subduction hinge of the Ionian lithosphere. The study area, located in central Sicily, extends from the Tyrrhenian coast southwards to the impressive NE-SW trending Tertiary clastic-evaporitic range, outcropping north of the Caltanissetta trough and covers the eastern Sicani Mts. Unlike in the Iblean Region (eastern Sicily), in this area hydrocarbon exploration was only recently attempted. Stratigraphy and mesostructural analyses, accomplished in the last years, support with field data the interpretation of a dense network of 2D seismic profiles, recently acquired by ENI-AGIP. The latter, calibrated by boreholes, provided key information on the subsurface geometries, accounting for a realistic kinematic model useful for the exploration strategies. Geoseismic sections and field geology show the study area as formed by a thick thrust pile of deep water carbonates, shallow seated, structures which overthrust carbonate platform, deep seated, imbricates. The chain developed during Miocene-early Pleistocene deformation. The deformation reflects the effects of the Cenozoic tectonic evolution of the former continental margin sedimentary cover. Following the geometry of the thrust pile, here illustrated, and the occurrence of a deeply seated carbonate platform body, central Sicily could be a new potential perspective for hydrocarbon opportunities.