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Insights on the Capo d'Orlando Flysch (NE Sicily) by means of geomechanics and sedimentology

Simone Mineo, Giovanna Pappalardo, Claudio Ivan Casciano, Agata Di Stefano, Stefano Catalano and Marco Gagliano
Insights on the Capo d'Orlando Flysch (NE Sicily) by means of geomechanics and sedimentology (in Tectonic and sedimentation relationships in Mediterranean basins and belts; a tribute to Fabio Lentini, Agata Di Stefano (prefacer) and Rosanna Maniscalco (prefacer))
Italian Journal of Geosciences (October 2019) 138 (3): 404-417

Abstract

A multidisciplinary integrated approach for the study of heterogeneous rock masses is presented herein with the aim of providing a characterization of one of the widest flysch formations of northeastern Sicily. The Capo d'Orlando Flysch is indeed affected by a geotechnical heterogeneity arising from the alternation of sandstone banks and siltstone layers occurring in different proportions and showing peculiar features. This is the main responsible of the uneven mechanical strength offered by these different lithological compartments and deserves an in-depth study. To this purpose, an integrated sedimentological-geomechanical study is the focus of this research, which was initially carried out through rock mass surveys aimed at recognizing the different facies associations and their distribution along selected outcrops. Sedimentological logs were followed by rock mass geomechanical surveys for the assessment of the quality of the rock and its discontinuities. All these elements concurred in the definition of the Geological Strength Index, which is preparatory for the estimation of the main mechanical properties of the rock mass through the Hoek and Brown failure criterion. Results show that the lithological compartments occurring within flysch rock masses strongly condition their mechanical attitude. In fact, sandstone portions behave as massive/fractured rock mass characterized by specific geomechanical properties, which are lowered by the presence of siltstone layers. For this reason, the definition of the facies associations (F.A.) affecting the rock mass, along with their geomechanical characterization, is a useful integrated activity to avoid overestimating or underestimating the mechanical attitude of flysch rock masses, especially when engineering geological works have to be designed.


ISSN: 2038-1719
EISSN: 2038-1727
Coden: BOGIAT
Serial Title: Italian Journal of Geosciences
Serial Volume: 138
Serial Issue: 3
Title: Insights on the Capo d'Orlando Flysch (NE Sicily) by means of geomechanics and sedimentology
Title: Tectonic and sedimentation relationships in Mediterranean basins and belts; a tribute to Fabio Lentini
Author(s): Mineo, SimonePappalardo, GiovannaCasciano, Claudio IvanDi Stefano, AgataCatalano, StefanoGagliano, Marco
Author(s): Di Stefano, Agataprefacer
Author(s): Maniscalco, Rosannaprefacer
Affiliation: Universita di Catania, Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Catania, Italy
Affiliation: Universita di Catania, Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Catania, Italy
Pages: 404-417
Published: 201910
Text Language: English
Publisher: Societa Geologica Italiana, Rome, Italy
References: 59
Accession Number: 2019-098253
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, geol. sketch map
N37°43'00" - N38°17'60", E14°45'00" - E15°22'60"
Country of Publication: Italy
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Abstract, Copyright, Societa Geologica Italiana. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 2019
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