Structural highs formation and their relationship to sedimentary basins in the north Sicily continental margin (southern Tyrrhenian Sea): implication for the Drepano Thrust Front.

Raimondo Catalano, Attilio Sulli, Fabrizio Pepe, Giovanni Bertotti, Pepe

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48 Citazioni (Scopus)

Abstract

Two high-penetration seismic profiles across the continental margin of north Sicily (southern Tyrrhenian Sea) have been interpreted to construct a crustal section across the margin and to provide a three-dimensional perspective on the upper crustal setting of the Solunto High and its structural relationships with the adjacent Cefalu` Basin. Crystalline rocks of the Kabilian–Calabrian Units (KCU) are recognized in the Solunto High region and farther to the north. The KCU body is tectonically superimposed onto sedimentary rocks pertaining to the Sicilian–Maghrebian Units (SMU) and the Solunto High corresponds to the thrust sheet culmination. Its occurrence in the Solunto High demonstrates that the Drepano Thrust Front is continuous from the Elimi Chain in the west to the Calabrian–Peloritani in the east. At the crustal scale, the continental margin of north Sicily shows tectonics features typical of most subduction zones and of rifted continental margins. Continental collision was achieved in the (?)Oligocene–early Miocene and caused the superposition of the KCU crystalline rocks on the deep-water carbonate resting on the African continental margin. Contractional deformation persisted until the late Miocene resulting in the tectonic superposition of deep- onto shallowwater carbonates and the formation of the Sicilian–Maghrebian fold-and-thrust belt. Extension began in late (?) Tortonian times, lasted till the early (?) Messinian and caused the opening of the Cefalu` Basin and other basins further to the north. Late (?) Messinian–early Pliocene contractional and/or transpressional deformation reactivated previously formed oblique ramps in the inner sector of the thrust belt. This event was responsible for uplift of the KCU in the Solunto High region. In the middle–late Pliocene, renewed extension determined further opening and subsidence of the Cefalu` basin. Lithospheric breakup took place in the late Pliocene. Presently, the north Sicily offshore is a zone of compressive stress and the area north of Solunto High is a zone of weakness.
Lingua originaleEnglish
pagine (da-a)1-18
Numero di pagine18
RivistaTectonophysics
Volume409/1-4
Stato di pubblicazionePublished - 2005

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Sicily
Calabrian
continental shelves
thrust
sedimentary basin
continental margin
Pliocene
Messinian
crystalline rock
tectonics
carbonates
basin
rocks
Miocene
sedimentary rocks
deep water
subsidence
carbonate
ramps
Tortonian

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth-Surface Processes

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title = "Structural highs formation and their relationship to sedimentary basins in the north Sicily continental margin (southern Tyrrhenian Sea): implication for the Drepano Thrust Front.",
abstract = "Two high-penetration seismic profiles across the continental margin of north Sicily (southern Tyrrhenian Sea) have been interpreted to construct a crustal section across the margin and to provide a three-dimensional perspective on the upper crustal setting of the Solunto High and its structural relationships with the adjacent Cefalu` Basin. Crystalline rocks of the Kabilian–Calabrian Units (KCU) are recognized in the Solunto High region and farther to the north. The KCU body is tectonically superimposed onto sedimentary rocks pertaining to the Sicilian–Maghrebian Units (SMU) and the Solunto High corresponds to the thrust sheet culmination. Its occurrence in the Solunto High demonstrates that the Drepano Thrust Front is continuous from the Elimi Chain in the west to the Calabrian–Peloritani in the east. At the crustal scale, the continental margin of north Sicily shows tectonics features typical of most subduction zones and of rifted continental margins. Continental collision was achieved in the (?)Oligocene–early Miocene and caused the superposition of the KCU crystalline rocks on the deep-water carbonate resting on the African continental margin. Contractional deformation persisted until the late Miocene resulting in the tectonic superposition of deep- onto shallowwater carbonates and the formation of the Sicilian–Maghrebian fold-and-thrust belt. Extension began in late (?) Tortonian times, lasted till the early (?) Messinian and caused the opening of the Cefalu` Basin and other basins further to the north. Late (?) Messinian–early Pliocene contractional and/or transpressional deformation reactivated previously formed oblique ramps in the inner sector of the thrust belt. This event was responsible for uplift of the KCU in the Solunto High region. In the middle–late Pliocene, renewed extension determined further opening and subsidence of the Cefalu` basin. Lithospheric breakup took place in the late Pliocene. Presently, the north Sicily offshore is a zone of compressive stress and the area north of Solunto High is a zone of weakness.",
keywords = "BACK-ARC BASIN; HIGH-RESOLUTION; EVOLUTION; LITHOSPHERE; CONSTRAINTS; KINEMATICS; SUBSIDENCE; APENNINES; EXTENSION; INSIGHTS",
author = "Raimondo Catalano and Attilio Sulli and Fabrizio Pepe and Giovanni Bertotti and Pepe",
year = "2005",
language = "English",
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TY - JOUR

T1 - Structural highs formation and their relationship to sedimentary basins in the north Sicily continental margin (southern Tyrrhenian Sea): implication for the Drepano Thrust Front.

AU - Catalano, Raimondo

AU - Sulli, Attilio

AU - Pepe, Fabrizio

AU - Bertotti, Giovanni

AU - Pepe, null

PY - 2005

Y1 - 2005

N2 - Two high-penetration seismic profiles across the continental margin of north Sicily (southern Tyrrhenian Sea) have been interpreted to construct a crustal section across the margin and to provide a three-dimensional perspective on the upper crustal setting of the Solunto High and its structural relationships with the adjacent Cefalu` Basin. Crystalline rocks of the Kabilian–Calabrian Units (KCU) are recognized in the Solunto High region and farther to the north. The KCU body is tectonically superimposed onto sedimentary rocks pertaining to the Sicilian–Maghrebian Units (SMU) and the Solunto High corresponds to the thrust sheet culmination. Its occurrence in the Solunto High demonstrates that the Drepano Thrust Front is continuous from the Elimi Chain in the west to the Calabrian–Peloritani in the east. At the crustal scale, the continental margin of north Sicily shows tectonics features typical of most subduction zones and of rifted continental margins. Continental collision was achieved in the (?)Oligocene–early Miocene and caused the superposition of the KCU crystalline rocks on the deep-water carbonate resting on the African continental margin. Contractional deformation persisted until the late Miocene resulting in the tectonic superposition of deep- onto shallowwater carbonates and the formation of the Sicilian–Maghrebian fold-and-thrust belt. Extension began in late (?) Tortonian times, lasted till the early (?) Messinian and caused the opening of the Cefalu` Basin and other basins further to the north. Late (?) Messinian–early Pliocene contractional and/or transpressional deformation reactivated previously formed oblique ramps in the inner sector of the thrust belt. This event was responsible for uplift of the KCU in the Solunto High region. In the middle–late Pliocene, renewed extension determined further opening and subsidence of the Cefalu` basin. Lithospheric breakup took place in the late Pliocene. Presently, the north Sicily offshore is a zone of compressive stress and the area north of Solunto High is a zone of weakness.

AB - Two high-penetration seismic profiles across the continental margin of north Sicily (southern Tyrrhenian Sea) have been interpreted to construct a crustal section across the margin and to provide a three-dimensional perspective on the upper crustal setting of the Solunto High and its structural relationships with the adjacent Cefalu` Basin. Crystalline rocks of the Kabilian–Calabrian Units (KCU) are recognized in the Solunto High region and farther to the north. The KCU body is tectonically superimposed onto sedimentary rocks pertaining to the Sicilian–Maghrebian Units (SMU) and the Solunto High corresponds to the thrust sheet culmination. Its occurrence in the Solunto High demonstrates that the Drepano Thrust Front is continuous from the Elimi Chain in the west to the Calabrian–Peloritani in the east. At the crustal scale, the continental margin of north Sicily shows tectonics features typical of most subduction zones and of rifted continental margins. Continental collision was achieved in the (?)Oligocene–early Miocene and caused the superposition of the KCU crystalline rocks on the deep-water carbonate resting on the African continental margin. Contractional deformation persisted until the late Miocene resulting in the tectonic superposition of deep- onto shallowwater carbonates and the formation of the Sicilian–Maghrebian fold-and-thrust belt. Extension began in late (?) Tortonian times, lasted till the early (?) Messinian and caused the opening of the Cefalu` Basin and other basins further to the north. Late (?) Messinian–early Pliocene contractional and/or transpressional deformation reactivated previously formed oblique ramps in the inner sector of the thrust belt. This event was responsible for uplift of the KCU in the Solunto High region. In the middle–late Pliocene, renewed extension determined further opening and subsidence of the Cefalu` basin. Lithospheric breakup took place in the late Pliocene. Presently, the north Sicily offshore is a zone of compressive stress and the area north of Solunto High is a zone of weakness.

KW - BACK-ARC BASIN; HIGH-RESOLUTION; EVOLUTION; LITHOSPHERE; CONSTRAINTS; KINEMATICS; SUBSIDENCE; APENNINES; EXTENSION; INSIGHTS

UR - http://hdl.handle.net/10447/18888

M3 - Article

VL - 409/1-4

SP - 1

EP - 18

JO - Tectonophysics

JF - Tectonophysics

SN - 0040-1951

ER -