A crustal seismic profile across Sicily

Vera Valenti, Attilio Sulli, Michela Giustiniani, Luigi Di Marzo, Flavio Accaino, Umberta Tinivella, Rinaldo Nicolich, Piero Manetti

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

A crustal reflection seismic profile, more than 100 km long, was recorded across central Sicily, from theTyrrhenian shore to the Sicily Channel, to understand the deep structures and the collision mechanismsbetween Europe and Africa and the subsequent geodynamic evolution. The profile was acquired usingexplosive sources and 240 active channels recorded by a Sercel 408-XL, 24 bits A/D converter, with a 12 kmspread and a 24-fold coverage.The data were processed following a non-conventional procedure in order to preserve the relativeamplitudes of the reflections and to better investigate the Sicily deep structures down to the Moho. The mainhighlighted structures are the dramatic flexure of the Iblean crust, the huge, deeper than expected, trough ofCaltanissetta consisting of deep seated thrusts and nappes, and the imbricate thrust system of rigid bodiescharacterizing the northern Maghrebian chain. We designed an ad hoc acquisition and processing in order tohighlight these main geological features in the seismic stacked section. Moreover, the deepest parts of theCaltanissetta trough are imaged for the first time, and its bottom is now fixed at more than 7 s TWT. Thegiant crustal wedge flexuring the Iblean foreland and the Moho geometries are examinated.
Original languageEnglish
Pages (from-to)52-61
Number of pages10
JournalTectonophysics
Volume508
Publication statusPublished - 2011

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Sicily
Moho
trough
thrust
troughs
flexure
geological feature
profiles
nappe
seismic reflection
geodynamics
folds (geology)
collision
flexing
crust
fold
geometry
wedges
converters
crusts

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth-Surface Processes

Cite this

Valenti, V., Sulli, A., Giustiniani, M., Di Marzo, L., Accaino, F., Tinivella, U., ... Manetti, P. (2011). A crustal seismic profile across Sicily. Tectonophysics, 508, 52-61.

A crustal seismic profile across Sicily. / Valenti, Vera; Sulli, Attilio; Giustiniani, Michela; Di Marzo, Luigi; Accaino, Flavio; Tinivella, Umberta; Nicolich, Rinaldo; Manetti, Piero.

In: Tectonophysics, Vol. 508, 2011, p. 52-61.

Research output: Contribution to journalArticle

Valenti, V, Sulli, A, Giustiniani, M, Di Marzo, L, Accaino, F, Tinivella, U, Nicolich, R & Manetti, P 2011, 'A crustal seismic profile across Sicily', Tectonophysics, vol. 508, pp. 52-61.
Valenti V, Sulli A, Giustiniani M, Di Marzo L, Accaino F, Tinivella U et al. A crustal seismic profile across Sicily. Tectonophysics. 2011;508:52-61.
Valenti, Vera ; Sulli, Attilio ; Giustiniani, Michela ; Di Marzo, Luigi ; Accaino, Flavio ; Tinivella, Umberta ; Nicolich, Rinaldo ; Manetti, Piero. / A crustal seismic profile across Sicily. In: Tectonophysics. 2011 ; Vol. 508. pp. 52-61.
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AU - Valenti, Vera

AU - Sulli, Attilio

AU - Giustiniani, Michela

AU - Di Marzo, Luigi

AU - Accaino, Flavio

AU - Tinivella, Umberta

AU - Nicolich, Rinaldo

AU - Manetti, Piero

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N2 - A crustal reflection seismic profile, more than 100 km long, was recorded across central Sicily, from theTyrrhenian shore to the Sicily Channel, to understand the deep structures and the collision mechanismsbetween Europe and Africa and the subsequent geodynamic evolution. The profile was acquired usingexplosive sources and 240 active channels recorded by a Sercel 408-XL, 24 bits A/D converter, with a 12 kmspread and a 24-fold coverage.The data were processed following a non-conventional procedure in order to preserve the relativeamplitudes of the reflections and to better investigate the Sicily deep structures down to the Moho. The mainhighlighted structures are the dramatic flexure of the Iblean crust, the huge, deeper than expected, trough ofCaltanissetta consisting of deep seated thrusts and nappes, and the imbricate thrust system of rigid bodiescharacterizing the northern Maghrebian chain. We designed an ad hoc acquisition and processing in order tohighlight these main geological features in the seismic stacked section. Moreover, the deepest parts of theCaltanissetta trough are imaged for the first time, and its bottom is now fixed at more than 7 s TWT. Thegiant crustal wedge flexuring the Iblean foreland and the Moho geometries are examinated.

AB - A crustal reflection seismic profile, more than 100 km long, was recorded across central Sicily, from theTyrrhenian shore to the Sicily Channel, to understand the deep structures and the collision mechanismsbetween Europe and Africa and the subsequent geodynamic evolution. The profile was acquired usingexplosive sources and 240 active channels recorded by a Sercel 408-XL, 24 bits A/D converter, with a 12 kmspread and a 24-fold coverage.The data were processed following a non-conventional procedure in order to preserve the relativeamplitudes of the reflections and to better investigate the Sicily deep structures down to the Moho. The mainhighlighted structures are the dramatic flexure of the Iblean crust, the huge, deeper than expected, trough ofCaltanissetta consisting of deep seated thrusts and nappes, and the imbricate thrust system of rigid bodiescharacterizing the northern Maghrebian chain. We designed an ad hoc acquisition and processing in order tohighlight these main geological features in the seismic stacked section. Moreover, the deepest parts of theCaltanissetta trough are imaged for the first time, and its bottom is now fixed at more than 7 s TWT. Thegiant crustal wedge flexuring the Iblean foreland and the Moho geometries are examinated.

KW - Caltanissetta Basin

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KW - Refraction tomography

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