The contribution of the pre-existing structures in mountain belt evolution: the example of the negative inversion in the Northen Sicily

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Abstract

Syn-orogenic extension has been recognised in Northern Sicily. Mesoscopic analysis has been carried out in three key areas, where folded-and-thrust Mesozoic-to-Tertiary rocks crop-out. The three examples are inherent to Portions Of tectonic Units Which occupy progressively more internal positions in the Sicilian chain from west to east. The extensional deformation is mainly represented by low-angle normal faults and shear bands. A common kinematic process seems to affect the other sector of the chain during the extension and is represented by a generalized negative inversion of previous layer-parallel shear bands and detachments related to the thrusting. The extensional deformation occurred during the late Miocene. It significantly modifies the architecture of the chain through the sliding-back of the tectonic units and may be related to the evolution of the wedge taper.
Lingua originaleEnglish
pagine (da-a)175-187
Numero di pagine13
RivistaBOLLETTINO DELLA SOCIETÀ GEOLOGICA ITALIANA
Volume123
Stato di pubblicazionePublished - 2004

All Science Journal Classification (ASJC) codes

  • Geology

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title = "The contribution of the pre-existing structures in mountain belt evolution: the example of the negative inversion in the Northen Sicily",
abstract = "Syn-orogenic extension has been recognised in Northern Sicily. Mesoscopic analysis has been carried out in three key areas, where folded-and-thrust Mesozoic-to-Tertiary rocks crop-out. The three examples are inherent to Portions Of tectonic Units Which occupy progressively more internal positions in the Sicilian chain from west to east. The extensional deformation is mainly represented by low-angle normal faults and shear bands. A common kinematic process seems to affect the other sector of the chain during the extension and is represented by a generalized negative inversion of previous layer-parallel shear bands and detachments related to the thrusting. The extensional deformation occurred during the late Miocene. It significantly modifies the architecture of the chain through the sliding-back of the tectonic units and may be related to the evolution of the wedge taper.",
author = "Pietro Renda and Fabrizio Nigro",
year = "2004",
language = "English",
volume = "123",
pages = "175--187",
journal = "Bollettino della Societa Geologica Italiana",
issn = "0037-8763",
publisher = "Societa Geologica Italiana",

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T1 - The contribution of the pre-existing structures in mountain belt evolution: the example of the negative inversion in the Northen Sicily

AU - Renda, Pietro

AU - Nigro, Fabrizio

PY - 2004

Y1 - 2004

N2 - Syn-orogenic extension has been recognised in Northern Sicily. Mesoscopic analysis has been carried out in three key areas, where folded-and-thrust Mesozoic-to-Tertiary rocks crop-out. The three examples are inherent to Portions Of tectonic Units Which occupy progressively more internal positions in the Sicilian chain from west to east. The extensional deformation is mainly represented by low-angle normal faults and shear bands. A common kinematic process seems to affect the other sector of the chain during the extension and is represented by a generalized negative inversion of previous layer-parallel shear bands and detachments related to the thrusting. The extensional deformation occurred during the late Miocene. It significantly modifies the architecture of the chain through the sliding-back of the tectonic units and may be related to the evolution of the wedge taper.

AB - Syn-orogenic extension has been recognised in Northern Sicily. Mesoscopic analysis has been carried out in three key areas, where folded-and-thrust Mesozoic-to-Tertiary rocks crop-out. The three examples are inherent to Portions Of tectonic Units Which occupy progressively more internal positions in the Sicilian chain from west to east. The extensional deformation is mainly represented by low-angle normal faults and shear bands. A common kinematic process seems to affect the other sector of the chain during the extension and is represented by a generalized negative inversion of previous layer-parallel shear bands and detachments related to the thrusting. The extensional deformation occurred during the late Miocene. It significantly modifies the architecture of the chain through the sliding-back of the tectonic units and may be related to the evolution of the wedge taper.

UR - http://hdl.handle.net/10447/21307

UR - https://pubs.geoscienceworld.org/italianjgeo/article-abstract/123/2/175/74877

M3 - Article

VL - 123

SP - 175

EP - 187

JO - Bollettino della Societa Geologica Italiana

JF - Bollettino della Societa Geologica Italiana

SN - 0037-8763

ER -