A crustal seismic profile across Sicily

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

Risultato della ricerca: Article

35 Citazioni (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.
Lingua originaleEnglish
pagine (da-a)52-61
Numero di pagine10
RivistaTectonophysics
Volume508
Stato di pubblicazionePublished - 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

Cita questo

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, pag. 52-61.

Risultato della ricerca: Article

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, pagg. 52-61.
Valenti V, Sulli A, Giustiniani M, Di Marzo L, Accaino F, Tinivella U e altri. 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. pagg. 52-61.
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T1 - A crustal seismic profile across Sicily

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

PY - 2011

Y1 - 2011

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

KW - Crustal seismic

KW - Reflection

KW - Refraction tomography

KW - Sicily

UR - http://hdl.handle.net/10447/60228

M3 - Article

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EP - 61

JO - Tectonophysics

JF - Tectonophysics

SN - 0040-1951

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