Tectono-sedimentary constraints to the Oligocene-to-Miocene evolution of the Peloritani thrust belt (NE Sicily)

Giunta, Giuseppe; Nigro, Fabrizio

doi:10.1016/s0040-1951(99)00283-8

Cited by 22 publications

(28 citation statements)

References 11 publications

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“…1c ; [16,35,36]). However, minor faults trending between N^S and NNW^SSE were locally mapped by Giunta and Nigro [59]. The two fault plane solutions estimated in this area (nos.…”

Section: Analysis Of Resultsmentioning

confidence: 94%

Seismic strain and seismogenic stress regimes in the crust of the southern Tyrrhenian region

Neri

Barberi

Orecchio

et al. 2003

Earth and Planetary Science Letters

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An investigation has been performed to identify and characterize the seismic deformation zones active over the last decades in the region of Italy that has experienced the strongest seismicity during the last centuries. The study is based on the estimate of hypocenter locations, fault plane solutions, seismogenic stress and seismic strain tensor orientations carried out using the entire dataset of the national and local seismic networks, and the recently improved threedimensional (3D) crustal velocity model of the study area. A series of simulation tests have been performed to evaluate the significance of the earthquake space distribution obtained and whether it was influenced by network geometry problems related to the sea and the lack of ocean bottom seismometers. In the sectors where hypocentral location was synthetically proved to be reliable, space distributions of earthquakes located with epicenter and focal depth errors less than 3 and 4 km, respectively, have been compared with local geology in order to identify seismogenic faults. The dataset of 32 fault plane solutions estimated with fault parameter errors less than 20 ‡ has been used to investigate space variations of seismogenic stress and seismic strain orientations over the study area. Stress was found to be uniform in the Messina Strait and southern Calabria where inversion of the available set of 11 fault plane solutions showed clear evidence of an extensional regime. The different orientations of the minimum compressive stress and strain found in this sector, together with the information available on local geology and tectonics, lead us to propose that the seismicity occurring over the last decades in the Messina Strait and southern Calabria was not in general produced at the main faults, but at minor faults activated by the main tectonic stress field acting in the area. To the west, in the sector including western Etna, the Nebrodi chain and the western Aeolian Islands, analysis of the available set of 16 fault plane solutions revealed a certain degree of stress heterogeneity with an apparent prevalence of north^south compression. This east to west change of stress^strain regimes is evaluated in the light of current hypotheses regarding the geodynamics of the study region. ß

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“…1c ; [16,35,36]). However, minor faults trending between N^S and NNW^SSE were locally mapped by Giunta and Nigro [59]. The two fault plane solutions estimated in this area (nos.…”

Section: Analysis Of Resultsmentioning

confidence: 94%

Seismic strain and seismogenic stress regimes in the crust of the southern Tyrrhenian region

Neri

Barberi

Orecchio

et al. 2003

Earth and Planetary Science Letters

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“…These rocks represent the late Palaeozoic basement of the European plate that was thrust over the Apennine-Maghrebian chain (Giunta and Nigro, 1999;De Gregorio et al, 2003;Festa et al, 2004;Heymes et al, 2010), then deformed during the Tertiary (Monaco et al, 1996;Bonardi et al, 2002;Somma et al, 2005;Grande et al, 2009) and Quaternary (Tortorici et al, 1995;De Guidi et al, 2003;Catalano et al, 2008). Because of their geological history, the rocks are deeply fractured and weathered.…”

Section: Spatial Variablesmentioning

confidence: 99%

Landslide susceptibility assessment in the Peloritani Mts. (Sicily, Italy) and clues for tectonic control of relief processes

Guidi

Scudero

2013

Nat. Hazards Earth Syst. Sci.

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Abstract. Many destructive shallow landslides hit villages in the Peloritani Mountains area (Sicily, Italy) on 1 October 2009 after heavy rainfall. The collection of several types of spatial data, together with a landslide inventory, allows the assessment of the landslide susceptibility by applying a statistical technique. The susceptibility model was validated by performing an analysis in a test area using independent landslide information, the results being able to correctly predict more than 70% of the landslides. Furthermore, the susceptibility analysis allowed the identification of which combinations of classes, within the different factors, have greater relevance in slope instability, and afterwards associating the most unstable combinations (with a short–medium term incidence) with the endogenic processes acting in the area (huge regional uplift, fault activity). Geological and tectonic history are believed to be key to interpreting morphological processes and landscape evolution. Recent tectonic activity was found to be a very important controlling factor in landscape evolution. A geomorphological model of cyclical relief evolution is proposed in which endogenic processes are directly linked to superficial processes. The results are relevant both to risk reduction and the understanding of active geological dynamics.

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“…Most of the KCU imbrication occurred by the deposition of the lower Miocene Stilo-Capo d'Orlando terrigenous sequence [Bonardi et al, 1980;Nigro, 1996]. Afterward, during Miocene, the tectonic transport of the KCU belt toward the southeast occurred passively above a sole thrust in the underlying SMU units, and only a subordinate amount of contractional strain was accommodated within the KCU belt by breaching thrusts and transpressional faults, including the Tindari Fault System [Giunta and Nigro, 1999]. In mid-Pliocene, a contractional tectonic event produced widespread thrusting and folding in the central Sicily [Barbano et al, 1978] and a reactivation of strike-slip faults in the northeastern Sicily, including the reactivation of the Tindari Fault System [Ghisetti, 1979].…”

Section: Geological Settingmentioning

confidence: 99%

Tectonics and seismicity of the Tindari Fault System, southern Italy: Crustal deformations at the transition between ongoing contractional and extensional domains located above the edge of a subducting slab

et al. 2006

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The Tindari Fault System (southern Tyrrhenian Sea, Italy) is a regional zone of brittle deformation located at the transition between ongoing contractional and extensional crustal compartments and lying above the western edge of a narrow subducting slab. Onshore structural data, an offshore seismic reflection profile, and earthquake data are analyzed to constrain the present geometry of the Tindari Fault System and its tectonic evolution since Neogene, including the present seismicity. Results show that this zone of deformation consists of a broad NNW trending system of faults including sets of right‐lateral, left‐lateral, and extensional faults as well as early strike‐slip faults reworked under late extension. Earthquakes and other neotectonic data provide evidence that the Tindari Fault System is still active in the central and northern sectors and mostly accommodates extensional or right‐lateral transtensional displacements on a diffuse array of faults. From these data, a multiphase tectonic history is inferred, including an early phase as a right‐lateral strike‐slip fault and a late extensional reworking under the influence of the subduction‐related processes, which have led to the formation of the Tyrrhenian back‐arc basin. Within the present, regional, geodynamic context, the Tindari Fault System is interpreted as an ongoing accommodation zone between the adjacent contractional and extensional crustal compartments, these tectonic compartments relating to the complex processes of plate convergence occurring in the region. The Tindari Fault System might also be included in an incipient, oblique‐extensional, transfer zone linking the ongoing contractional belts in the Calabrian‐Ionian and southern Tyrrhenian compartments.

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Tectono-sedimentary constraints to the Oligocene-to-Miocene evolution of the Peloritani thrust belt (NE Sicily)

Cited by 22 publications

References 11 publications

Seismic strain and seismogenic stress regimes in the crust of the southern Tyrrhenian region

Seismic strain and seismogenic stress regimes in the crust of the southern Tyrrhenian region

Landslide susceptibility assessment in the Peloritani Mts. (Sicily, Italy) and clues for tectonic control of relief processes

Tectonics and seismicity of the Tindari Fault System, southern Italy: Crustal deformations at the transition between ongoing contractional and extensional domains located above the edge of a subducting slab

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