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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/533

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Title: Nested zones of instability in the Mount Etna volcanic edifice, Italy
Authors: Rust, D.*
Behncke, B.*
Neri, M.*
Ciocanel, A.*
Keywords: Mount Etna
instability; flank faults
volcano collapse models
Issue Date: 15-Jun-2005
Publisher: Elsevier
Title of journal: Journal of Volcanology and Geothermal Research
Series/Report no.: 1-4/144(2005)
Abstract: Large-scale flank instability on Mount Etna is associated with a distinct set of faults radiating generally from the summit area and restricted to the volcanic edifice itself. New observations and mapping of very recent and continuing deformation along these faults and related structures have been analysed in combination with published information, including recent seismic and eruption data, enabling the faults to be placed in three groups. Two of these, the Pernicana fault system (PFS) and the Ragalna fault system (RFS) bound, respectively, the northern and south-western margins of instability. Their activity responds to cycles of magma pressure associated with flank eruptions, together with subsequent deflation as gravity dominates. These cycles may operate at different depths, with the RFS bordering deep-seated instability. Their positions appear governed by the contact, in the substrate of the volcano, between relatively weak early Quaternary clays and stronger rocks of the Apennine–Maghrebian Chain that rise towards the north and west in the subsurface, buttressing the edifice in these directions. The unstable mass to the un-buttressed south and east is thus defined by its weak substrate and displays structures similar to those produced in model experiments. The third fault group, the Mascaluci–-Trecastagni fault system, borders a rather faster-moving zone of instability in the eastern part of the large unstable mass, outlining one element in a nested pattern in map view. Low-angle detachments below the unstable zones are thought to occur at different levels above a deep and laterally extensive detachment associated with the RFS, producing a nested pattern in section as well. This is illustrated by the PFS where the long-recognised western half of the fault borders a fast moving zone of instability riding above a detachment that daylights as a thrusted deformation front marked by recurring landsliding at an approximate mid-slope position on the volcano. Downslope, the newly recognised eastern extension of the PFS, exhibiting slip-rates an-order-of-magnitude lower than the western segment, is thought to border a deeper slow-moving detachment that daylights offshore. Windows of deformed sub-Etnean clays at anomalously high altitudes may indicate where similar detachments, no longer mechanically favoured and now inactive, have daylighted. As a result, the edifice can be considered, overall, as consisting of multiple unstable areas, nested in plan view and with basal detachments occurring at different levels in section. This model of edifice behaviour is regarded as an evolving one, with detachments waxing and waning in their activity as flank movement progresses.
URI: http://hdl.handle.net/2122/533
DOI: 10.1016/j.jvolgeores.2004.11.021
Appears in Collections:Papers Published / Papers in press
04.04.09. Structural geology
04.08.06. Volcano monitoring

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  • Acocella and Neri, 2003 Acocella V., Neri M., What makes flank eruptions? The 2001 Etna eruption and its possible triggering mechanisms, Bull. Volcanol., Volume: 65, (2003), pp. 517--529 Bibliographic Page Full text
  • Acocella et al., 2003 Acocella V., Behncke B., Neri M., D'Amico S., Link between major flank slip and eruptions at Mt. Etna (Italy), J. Geophys. Res., Volume: 30, (2003), p. 2286 DOI: 10.1029/2003GL018642
  • Azzaro et al., 1989 Azzaro R., Lo Giudice E., Rasà R., Catalogo degli eventi macrosismici e delle fenomenologie da creep nell'area etnea dall'agosto 1980 al dicembre 1989, Boll. GNV, Volume: 1, (1989), pp. 13--46
  • Azzaro et al., 1998 Azzaro R., Ferreli L., Michetti A.M., Serva L., Vittori E., Environmental hazard of capable faults: the case of the Pernicana fault (Mt. Etna, Sicily), Nat. Hazards, Volume: 17, (1998), pp. 147--162 CrossRef
  • Behncke and Neri, 2003a Behncke B., Neri M., The July–August 2001 eruption of Mt. Etna (Sicily), Bull. Volcanol., Volume: 65, (2003), pp. 461--476 Bibliographic Page Full text
  • Behncke and Neri, 2003b Behncke B., Neri M., Cycles and trends in the recent eruptive behaviour of Mount Etna (Italy), Can. J. Earth Sci., Volume: 40, (2003), pp. 1405--1411 DOI: 10.1139/E03-052
  • Billi et al., 2003 Billi A., Acocella V., Funiciello R., Giordano G., Lanzafame G., Neri M., Mechanisms for ground-surface fracturing and incipient slope failure associated to the July–August 2001 eruption of Mt. Etna, Italy: analysis of ephemeral field data, J. Volcanol. Geotherm. Res., Volume: 122, (2003), pp. 281--294 DOI: 10.1016/S0377-0273(02)00507-3 Bibliographic Page Full text
  • Borgia et al., 1992 Borgia A., Ferrari L., Pasquare G., Importance of gravitational spreading in the tectonic and volcanic evolution of Mount Etna, Nature, Volume: 357, (1992), pp. 231--235 CrossRef
  • Borgia et al., 2000a Borgia A., Delaney P.T., Denlinger R.P., Spreading volcanoes, Annu. Rev. Earth Planet. Sci., Volume: 28, (2000), pp. 539--570 CrossRef
  • Borgia et al., 2000b Borgia A., Lanari R., Sansosti E., Tesauro M., Berardino P., Fornaro G., Neri M., Murray J.B., Actively growing anticlines beneath Catania from the distal motion of Mount Etna's decollment measured by SAR interferometry and GPS, Geophys. Res. Lett., Volume: 27, (2000), pp. 3409--3412 CrossRef
  • Bottari et al., 1975 Bottari A., Lo Giudice E., Patanè G., Romano R., Sturiale C., L'eruzione etnea del gennaio-marzo 1974, Publication, Volume: vol. 82, (1975), CNR, Istituto Internazionale di Vulcanologia, Catania. pp. 175--198
  • Calvari et al., 1994 Calvari S., Groppelli G.L., Pasquarè G., Preliminary geological data on the south-western walls of Valle del Bove, Mt. Etna (Sicily), Acta Vulcanol., Volume: 5, (1994), pp. 15--30
  • Coltelli et al., 1994 Coltelli M., Garduno V.H., Neri M., Pasquare' G., Pompilio M., Geology of northern wall of Valle del Bove, Etna (Sicily), Acta Vulcanol., Volume: 5, (1994), pp. 55--68
  • Corsaro et al., 2002 Corsaro R., Neri M., Pompilio M., Paleo-environmental and volcano-tectonic evolution of the south-eastern flank of Mt. Etna during the last 225 ka inferred from volcanic succession of the ≪Timpe≫, Acireale, Sicily, J. Volcanol. Geotherm. Res., Volume: 72, (2002), pp. 1--19
  • Del Pezzo et al., 1987 Del Pezzo E., Gresta S., Patanè D., Scarcella G., Attenuation of short period seismic waves at Etna as compared to other volcanic areas, Pure Appl. Geophys., Volume: 125, (1987), pp. 1039--1050
  • Ferrari et al., 1991 Ferrari L., Garduno V.H., Neri M., I dicchi della Valle del Bove, Etna: un metodo per stimare le dilatazioni di un apparato vulcanico, Mem. Soc. Geol. Ital., Volume: 47, (1991), pp. 495--508
  • Firth et al., 1996 Firth C., Stewart I., McGuire W.M., Kershaw S., Vita-Finzi C., Coastal elevation changes in eastern Sicily: implications for volcano instability at Mount Etna, McGuire W.M., Jones A.P., Neuberg J., (Ed.) Volcano instability on the earth and other planets, Spec. Publ.-Geol. Soc. Lond., Volume: vol. 110, (1996), pp. 153--167
  • Froger et al., 2001 Froger J., Merle O., Briole P., Active spreading and regional extension at Mount Etna imaged by SAR interferometry, Earth Planet. Sci. Lett., Volume: 187, (2001), pp. 245--258 Bibliographic Page Full text
  • Groppelli and Tibaldi, 1999 Groppelli G., Tibaldi A., Control of rock rheology on deformation style and slip-rate along the active Pernicana Fault, Mt. Etna, Italy, Tectonophysics, Volume: 305, (1999), pp. 521--537 Bibliographic Page Full text
  • Hirn et al., 1997 Hirn A., Nicolich R., Gallart J., Laigle M., Cernobori L., Roots of Etna volcano in faults of great earthquakes, Earth Planet. Sci. Lett., Volume: 148, (1997), pp. 171--191 Bibliographic Page Full text
  • Lanzafame et al., 1996 Lanzafame G., Neri M., Rust D., Active tectonics affecting the eastern flank of Mount Etna: structural interactions at regional and local scale, Gravestock P.H., McGuire W.J., (Ed.) Etna: fifteen years on, (1996), Cheltenham & Gloucester College of Higher Education, Centre for Volcanic Research. pp. 25--33
  • Lanzafame et al., 1997a Lanzafame G., Neri M., Coltelli M., Lodato L., Rust D., North–South compression in the Mt. Etna region (Sicily): spatial and temporal distribution, Acta Vulcanol., Volume: 9, (1997), pp. 121--133
  • Lanzafame et al., 1997b Lanzafame G., Leonardi A., Neri M., Rust D., Late overthrust of the Appenine–Maghrebian Chain at the NE periphery of Mt. Etna, Italy, C. R. Acad. Sci., Paris Terre, Volume: 324, Issue: IIa (1997), pp. 325--332
  • Lanzafame et al., 2003 Lanzafame G., Neri M., Acocella V., Billi A., Funiciello R., Giordano G., Structural features of the July–August 2001 Mount Etna eruption: evidence for a complex magmatic system, J. Geol. Soc. (Lond.), Volume: 160, (2003), pp. 531--544
  • Lentini, 1982 Lentini F., The geology of the Mt. Etna basement, Mem. Soc. Geol. Ital., Volume: 23, (1982), pp. 7--25
  • Lo Giudice and Rasa, 1992 Lo Giudice E., Rasa A., Very shallow earthquakes and brittle deformation in active volcanic areas: the Etnean region as an example, Tectonophysics, Volume: 202, (1992), pp. 257--268
  • Lundgren et al., 2003 Lundgren P., Berardino P., Coltelli M., Fornaro G., Lanari R., Puglisi G., Sansosti E., Tesauro M., Coupled magma chamber inflation and sector collapse slip observed with synthetic aperture radar interferometry on Mt. Etna volcano, J. Geophys., (2003), p. 108 DOI: 10.1029/2001JB000657
  • McGuire, 1996 McGuire W.J., Volcano instability: a review of contemporary themes, McGuire W.C., Jones A.P., Neuberg J., (Ed.) Volcano instability on the earth and other planets, Spec. Publ.-Geol. Soc. Lond., Volume: vol. 110, (1996), Geological Society. pp. 1--23
  • McGuire and Pullen, 1989 McGuire W.J., Pullen A.D., Location and orientation of eruptive fissures and feeder-dykes at Mount Etna: influence of gravitational and regional stress regimes, J. Volcanol. Geotherm. Res., Volume: 38, (1989), pp. 225--244
  • Merle and Borgia, 1996 Merle O., Borgia A., Scaled experiments of volcanic spreading, J. Geophys. Res., Volume: 101, (1996), pp. 13805--13817
  • Monaco et al., 1997 Monaco C., Tapponier P., Tortorici L., Gillot P.Y., Late Quaternary slip rates on the Acireale–Piedimonte normal faults and tectonic origin of Mt. Etna (Sicily), Earth Planet. Sci. Lett., Volume: 147, (1997), pp. 125--139 Bibliographic Page Full text
  • Murray and Voight, 1996 Murray J.B., Voight B., Slope stability and eruption prediction on the eastern flank of Mount Etna, McGuire W.C., Jones A.P., Neuberg J., (Ed.) Volcano instability on the earth and other planets, Spec. Publ.-Geol. Soc. Lond., Volume: vol. 110, (1996), Geological Society. pp. 111--114
  • Neri et al., 1991 Neri M., Garduño V.H., Pasquarè G., Rasà R., Studio strutturale e modello cinematico della Valle del Bove e del settore nord-orientale etneo, Acta Vulcanol., Volume: 1, (1991), pp. 17--24
  • Neri et al., 2004 Neri M., Acocella V., Behncke B., The role of the Pernicana Fault System in the spreading of Mt. Etna (Italy) during the 2002–2003 eruption, Bull. Volcanol., Volume: 66, (2004), pp. 417--430 Bibliographic Page Full text
  • Neri et al., 2005 Neri M., Acocella V., Behncke B., Maiolino V., Ursino A., Velardita R., Contrasting triggering mechanisms of the 2001 and 2002–2003 eruptions of Mount Etna (Italy), J. Volcanol. Geotherm. Res., Volume: 144, (2005), pp. 235--255 DOI: 10.1016/j.jvolgeores.2004.11.025 Bibliographic Page Full text
  • Patane et al., 1984 Patane G., Gresta S., Imposa S., Seismic activity preceding the 1983 eruption of Mount Etna, Bull. Volcanol., Volume: 47, (1984), pp. 941--952
  • Patanè et al., 1993 Patanè D., Privitera E., Ferrucci F., Gresta S., Seismic activity leading to the 1991–1993 eruption of Mount Etna and its tectonic implications, Acta Vulcanol., Volume: 4, (1993), pp. 47--55
  • Privitera et al., 1991 Privitera E., Cardaci C., Patanè D., Spampanato S., Etna: Seismic activity, Acta Vulcanol., Volume: 1, (1991), pp. 260--265
  • Rasà et al., 1996 Rasà R., Azzaro R., Leonardi O., Aseismic creep on faults and flank instability at Mount Etna volcano, Sicily, McGuire W.C., Jones A.P., Neuberg J., (Ed.) Volcano instability on the earth and other planets, Spec. Publ.-Geol. Soc. Lond., Volume: vol. 110, (1996), pp. 179--192
  • Romano, 1979 Romano, R. (Ed.), 1979. Geological map to Mount Etna. S.EL.CA.Firenze.
  • Romano, 1982 Romano R., Succession of the volcanic activity in the Etnean area, Mem. Soc. Geol. Ital., Volume: 23, (1982), pp. 27--48
  • Rust and Kershaw, 2000 Rust D., Kershaw S., Holocene tectonic uplift patterns in northeastern Sicily: evidence from marine notches in coastal outcrops, Mar. Geol., Volume: 167, (2000), pp. 105--126 Bibliographic Page Full text
  • Rust and Neri, 1996 Rust D., Neri M., The boundaries of large-scale collapse on the flanks of Mount Etna, Sicily, McGuire W.C., Jones A.P., Neuberg J., (Ed.) Volcano instability on the earth and other planets, Spec. Publ.-Geol. Soc. Lond., Volume: vol. 110, (1996), Geological Society. pp. 193--208
  • Siebert, 1984 Siebert L., Large volcanic debris avalanches: characteristics of source areas, deposits and associated eruptions, J. Volcanol. Geotherm. Res., Volume: 22, (1984), pp. 163--197 CrossRef
  • Tibaldi and Groppelli, 2002 Tibaldi A., Groppelli G., Volcano-tectonic activity along structures of the unstable NE flank of Mt. Etna (Italy) and their possible origin, J. Volcanol. Geotherm. Res., Volume: 115, (2002), pp. 277--302 Bibliographic Page Full text
  • Voight and Elsworth, 1997 Voight B., Elsworth D., Failure of volcano slopes, Geotechnique, Volume: 47, (1997), pp. 1--31

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