Sicily is a thick orogenic wedge formed by (1) the foreland (African) and its Sicilian orogen and (2) the thick-skinned, Calabrian–Peloritani wedge. The crust under central Sicily, from the Tyrrhenian margin to the coastline of the Sicily Channel, has been investigated by the multidisciplinary (SI.RI.PRO.) research project. The project dealt with the nature and thickness of the crust and depth and geometry of the Moho, which is essential in formulating subduction models and improving the knowledge of African and Tyrrhenian– European lithospheres. The results resolve features such as (1) the main orogenic wedge, (2) the very steep, NW–SE-trending regional monocline suggesting inflection of the foreland crust, (3) the deep Caltanissetta synform imaged, for the first time, to about 25 km, and (4) the top of the crystalline basement and the inferred crust–mantle boundary. The SI.RI.PRO. transect confirmed that the NNW-dipping, autochthonous Iblean platform of SE Sicily and its basement extends all the way into central Sicily. Further NW, towards the NNW end of the transect, a large uplift involves the Iblean platform and its underlying basement. The associated gravity anomaly is interpreted as the southern wedge edge of the Tyrrhenian mantle that splits the subducting Iblean–Pelagian (African) continental slab from an overlying synformal stack of allochthonous thrust sheets.

Catalano, R., Valenti, V., Albanese, C., Accaino, F., Sulli, A., Tinivella, U., et al. (2013). Sicily’s fold–thrust belt and slab roll-back: the SI.RI.PRO. seismic crustal transect. JOURNAL OF THE GEOLOGICAL SOCIETY, 170, 451-464 [10.1144/jgs2012-099].

Sicily’s fold–thrust belt and slab roll-back: the SI.RI.PRO. seismic crustal transect

CATALANO, Raimondo;VALENTI, Vera;ALBANESE, Cinzia;SULLI, Attilio;GASPARO MORTICELLI, Maurizio;
2013-01-01

Abstract

Sicily is a thick orogenic wedge formed by (1) the foreland (African) and its Sicilian orogen and (2) the thick-skinned, Calabrian–Peloritani wedge. The crust under central Sicily, from the Tyrrhenian margin to the coastline of the Sicily Channel, has been investigated by the multidisciplinary (SI.RI.PRO.) research project. The project dealt with the nature and thickness of the crust and depth and geometry of the Moho, which is essential in formulating subduction models and improving the knowledge of African and Tyrrhenian– European lithospheres. The results resolve features such as (1) the main orogenic wedge, (2) the very steep, NW–SE-trending regional monocline suggesting inflection of the foreland crust, (3) the deep Caltanissetta synform imaged, for the first time, to about 25 km, and (4) the top of the crystalline basement and the inferred crust–mantle boundary. The SI.RI.PRO. transect confirmed that the NNW-dipping, autochthonous Iblean platform of SE Sicily and its basement extends all the way into central Sicily. Further NW, towards the NNW end of the transect, a large uplift involves the Iblean platform and its underlying basement. The associated gravity anomaly is interpreted as the southern wedge edge of the Tyrrhenian mantle that splits the subducting Iblean–Pelagian (African) continental slab from an overlying synformal stack of allochthonous thrust sheets.
Settore GEO/02 - Geologia Stratigrafica E Sedimentologica
Settore GEO/03 - Geologia Strutturale
Settore GEO/11 - Geofisica Applicata
Catalano, R., Valenti, V., Albanese, C., Accaino, F., Sulli, A., Tinivella, U., et al. (2013). Sicily’s fold–thrust belt and slab roll-back: the SI.RI.PRO. seismic crustal transect. JOURNAL OF THE GEOLOGICAL SOCIETY, 170, 451-464 [10.1144/jgs2012-099].
File in questo prodotto:
File Dimensione Formato  
Journal of the Geological Society-2013-Catalano-jgs2012-099.pdf

Solo gestori archvio

Dimensione 3.31 MB
Formato Adobe PDF
3.31 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/74585
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 87
  • ???jsp.display-item.citation.isi??? 84
social impact