Relationships between magmatism and tectonics in a continental rift: The Pantelleria Island region (Sicily Channel, Italy)

Civile, Dario; Lodolo, Emanuele; Tortorici, L.; Lanzafame, G.; Brancolini, Giuliano

doi:10.1016/j.margeo.2008.01.009

Cited by 87 publications

(72 citation statements)

References 23 publications

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“…Their distribution, that has been usually considered to have a NW-SE alignment, actually depict, as a whole, a roughly N-S oriented belt crosscutting the entire channel from the surroundings of the island of Lampedusa, to the South, to the Graham Bank, to the North (Figure 1). N-S trend of the submarine volcanic centres is also recognizable at a local scale as shown by morphotectonic analyses carried out on detailed bathymetric maps of the Graham Bank area (Civile et al, 2008).…”

Section: Introductionmentioning

confidence: 73%

“…The Late Quaternary extension reactivates the older crustal and/or lithospheric structures responsible for the crustal stretching of the Pelagian Block developed mainly during Late A c c e p t e d M a n u s c r i p t Neogene-Early Quaternary rifting. Seismic reflection profiles across the Pantelleria trough (Torelli et al, 1991;Finetti and Del Ben, 2005;Civile et al, 2008) highlight, in fact, that the boundary master faults appear to be undoubtedly sealed by Late (?) Quaternary sediments well imaged along lines CS89-01 (see Fig.…”

Section: Summary and Discussionmentioning

confidence: 99%

“…Offshore geophysical and geological information (Calanchi et al, 1989;CNR, 1991;Grasso et al, 1993;Rotolo et al, 2006;Civile et al, 2008) show that the magmatic district of the Sicily Channel, which is part of the Pelagian Block (Burollet et al, 1978), includes several submerged volcanic edifices. Their distribution, that has been usually considered to have a NW-SE alignment, actually depict, as a whole, a roughly N-S oriented belt crosscutting the entire channel from the surroundings of the island of Lampedusa, to the South, to the Graham Bank, to the North (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

“…Available seismic reflection lines (Finetti, 1984;Torelli et al, 1991;Finetti and Del Ben, 2005) show that these depressions, partially filled by Pliocene-Pleistocene turbidites reaching thicknesses of about 1000 m, 2000 m and 1500 m in the Pantelleria, Linosa and Malta basins, respectively (Colantoni, 1975;Maldonato and Stanley, A c c e p t e d M a n u s c r i p t 1977;Winnock, 1981;Calanchi et al, 1989), are bounded by NW-SE trending sub-vertical conjugate normal faults (Figure 1). The crustal stretching was associated with thinning of the African continental crust (Colombi et al, 1973;Boccaletti et al, 1984;Scarascia et al, 2000) that reaches thicknesses of 17-18 km beneath the Pantelleria and Linosa troughs (Finetti and Del Ben, 2005;Civile et al, 2008). These areas are also characterized by a relatively high heat-flow as high as 130 mW/m 2 (Della Vedova et al, 1995) and by positive Bouguer anomalies ranging between +40 and +80 mGal (Morelli et al, 1975).…”

Section: Introductionmentioning

confidence: 99%

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Late Quaternary deformation on the island on Pantelleria: New constraints for the recent tectonic evolution of the Sicily Channel Rift (southern Italy)

Catalano

Guidi

Lanzafame

et al. 2009

Journal of Geodynamics

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Structural observations carried out on the volcanic island of Pantelleria show that the tectonic setting is dominated by NNE-trending normal faults and by NW-striking right-lateral strike-slip faults with normal component of motion controlled by a  N 100°E oriented extension.This mode of deformation also controls the development of the eruptive fissures, dykes and eruptive centres along NNE-SSW belts that may thus represent the surface response to crustal cracking with associated magma intrusions. Magmatic intrusions are also responsible for the impressive vertical deformations that affect during the Late Quaternary the south-eastern segment of the island and producing a large dome within the Pantelleria caldera complex. The results of the structural analysis carried out on the island of Pantelleria also improves the general knowledge on the Late Quaternary tectonics of the entire Sicily Channel. ESE-WNW directed extension, responsible for both the tectonic and volcano-tectonic features of the Pantelleria Island, also characterizes, at a greater scale, the entire channel as shown by available geodetic and seismological data. This mode of extension reactivates the older NW-SE trending fault segments bounding the tectonic troughs of the Channel as right-lateral strike slip faults and produces new NNE trending pure extensional features (normal faulting and cracking) that preferentially develop at the tip of the major strike-slip fault zones. We thus relate the Late Quaternary volcanism of the Pelagian Block magmatism to dilatational strain on * ManuscriptPage 2 of 27 A c c e p t e d M a n u s c r i p t the NNE-striking extensional features that develop on the pre-existing stretched area and propagate throughout the entire continental crust linking the already up-welled mantle with the surface.

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Section: Introductionmentioning

confidence: 73%

Section: Summary and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Late Quaternary deformation on the island on Pantelleria: New constraints for the recent tectonic evolution of the Sicily Channel Rift (southern Italy)

Catalano

Guidi

Lanzafame

et al. 2009

Journal of Geodynamics

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“…Inside this belt are also located the volcanic center of Linosa Island and the Nameless, Terribile and Graham banks (Fig. 1), that, together with Pantelleria Island, characterize the Pliocene to Recent widespread alkali basalt volcanism of the Sicily Channel (Calanchi et al 1989;Civile et al 2008Civile et al , 2014Coltelli et al 2016), mainly associated with the extensional phase of the channel.…”

Section: Geological Setting and Previous Knowledgesmentioning

confidence: 99%

Evidence of positive tectonic inversion in the north-central sector of the Sicily Channel (Central Mediterranean)

et al. 2016

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In order to unravel the tectonic evolution of the north-central sector of the Sicily Channel (Central Mediterranean), a seismo-stratigraphic analysis of single-and multichannel seismic reflection profiles has been carried out. This allowed to identify, between 20 and 50 km offshore the central-southern coast of Sicily, a *80-km-long deformation belt, characterized by a set of WNW-ESE to NW-SE fault segments showing a polyphasic activity. Within this belt, we observed: i) Miocene normal faults reactivated during Zanclean-Piacenzian time by dextral strike-slip motion, as a consequence of the AfricaEurope convergence; ii) releasing and restraining bend geometries forming well-developed pull-apart basins and compressive structures. In the central and western sectors of the belt, we identified local transpressional reactivations of Piacenzian time, attested by well-defined compressive features like push-up structures and fault-bend anticlines. The reconstruction of timing and style of tectonic deformation suggest a strike-slip reactivation of inherited normal faults and the local subsequent positive tectonic inversion, often documented along oblique thrust ramps. This pattern represents a key for an improved knowledge of the structural style of foreland fold-and-thrust belts propagating in a preexisting extensional domain. With regard to active tectonics and seismic hazards, recent GPS data and local seismicity events suggest that this deformation process could be still active and accomplished through deep-buried structures; moreover, several normal faults showing moderate displacements have been identified on top of the Madrepore Bank and Malta High, offsetting the Late Quaternary deposits. Finally, inside the northern part of the

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The 1891 submarine eruption offshore Pantelleria Island (Sicily Channel, Italy): Identification of the vent and characterization of products and eruptive style

Conte

Martorelli

Calarco

et al. 2014

Geochem Geophys Geosyst

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High-resolution bathymetry and seafloor sampling have been used to characterize the 1891 submarine eruption of the Pantelleria volcanic complex. This submarine eruption has been documented mainly by historical reports, describing basaltic scoria bombs floating on the sea surface (i.e., lava balloons). In this study, the 1891 eruptive vent has been identified as a small cone (volume of 700,000 m 3 ) rising 90 m from 350 m w.d., and located within a newly discovered submarine volcanic field covering a wide area offshore from the NW coast of Pantelleria; recently, Kelly et al. (2012) confirmed this location by a multibeam and ROV survey. Pyroclasts from the 1891 eruption crop out directly on the seafloor and are fresh scoria clasts (i.e., small bombs, bomb fragments, and lapilli) and glass ash-sized grains; both have been characterized in their morphology, textures, and geochemistry. The distinctive vesicularity and crystallization characteristics displayed by the scoriaceous pyroclasts reflect modes of degassing in both syn and posteruptive regimes; these characteristics, along with the distribution of deposits suggest for the strongest eruptive phase of the 1891 eruption a style analogous to Hawaiian fountaining. Glass grains from a buoyant plume were dispersed northward from the vent, up to distances of 1.5 km, redirected by the Levantine Intermediate Water. The identification of the 1891 submarine eruptive vent offshore Pantelleria, as well as the features of erupted pyroclasts improve our knowledge of submarine explosive eruptions that occur at shallow-intermediate depths and, among these, of the rare eruptions producing lava balloons.

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Relationships between magmatism and tectonics in a continental rift: The Pantelleria Island region (Sicily Channel, Italy)

Cited by 87 publications

References 23 publications

Late Quaternary deformation on the island on Pantelleria: New constraints for the recent tectonic evolution of the Sicily Channel Rift (southern Italy)

Late Quaternary deformation on the island on Pantelleria: New constraints for the recent tectonic evolution of the Sicily Channel Rift (southern Italy)

Evidence of positive tectonic inversion in the north-central sector of the Sicily Channel (Central Mediterranean)

The 1891 submarine eruption offshore Pantelleria Island (Sicily Channel, Italy): Identification of the vent and characterization of products and eruptive style

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