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What makes flank eruptions? The 2001 Etna eruption and its possible triggering mechanisms

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Abstract

Most flank eruptions within a central stratovolcano are triggered by lateral draining of magma from its central conduit, and only few eruptions appear to be independent of the central conduit. In order to better highlight the dynamics of flank eruptions in a central stratovolcano, we review the eruptive history of Etna over the last 100 years. In particular, we take into consideration the Mount Etna eruption in 2001, which showed both summit activity and a flank eruption interpreted to be independent from the summit system. The eruption started with the emplacement of a ~N-S trending peripheral dike, responsible for the extrusion of 75% of the total volume of the erupted products. The rest of the magma was extruded through the summit conduit system (SE crater), feeding two radial dikes. The distribution of the seismicity and structures related to the propagation of the peripheral dike and volumetric considerations on the erupted magmas exclude a shallow connection between the summit and the peripheral magmatic systems during the eruption. Even though the summit and the peripheral magmatic systems were independent at shallow depths (<3 km b.s.l.), petro-chemical data suggest that a common magma rising from depth fed the two systems. This deep connection resulted in the extrusion of residual magma from the summit system and of new magma from the peripheral system. Gravitational stresses predominate at the surface, controlling the emplacement of the dikes radiating from the summit; conversely, regional tectonics, possibly related to N-S trending structures, remains the most likely factor to have controlled at depth the rise of magma feeding the peripheral eruption.

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References

  • Acocella V, Cifelli F, Funiciello R (2001) The control of overburden thickness on resurgent domes: insights from analogue models. J Volcanol Geotherm Res 111:137–153

    Article  CAS  Google Scholar 

  • Acocella V, Cifelli R, Funiciello R, Minore L (2002) Analogue models of dike emplacement. Proceedings EGS meeting Nice, France, April 2002, Abstract vol, p 112

  • Adams N.K, de Silva S.L, Self S, Salas G, Schubring S, Parmenter JL, Arbesman K (2001) The physical volcanology of the 1600 eruption of Huaynaputina, southern Peru. Bull Volcanol 62:493–518

    Article  Google Scholar 

  • Alfano GB, Friedlaender I (1929) La storia del Vesuvio. Verlag Dr Karl Höhn, Ulm a.D., p 67

  • Andronico D, Lodato L, Neri M (2002) Analysis of the 20th century effusive activity at Mount Etna to assess the potential effusive hazard. Proceedings EGS Meeting Nice, France, April 2002

  • Behncke B, Neri M (2003) The July–August 2001 eruption of Mount Etna (Sicily). Bull Volcanol (in press)

  • Bonaccorso A, Aloisi M, Mattia M (2002) Dike emplacement forerunning the Etna July 2001 eruption modeled through continuous tilt and GPS data. Geophys Res Lett (in press). DOI 10.1007/s00445-003-0274-1

  • Bonafede M, Danesi S (1997) Near-field modifications of stress induced by dyke injection at shallow depth. Geophys J Int 130:435–448

    Google Scholar 

  • Borgia A, Ferrari L, Pasquarè G (1992) Importance of gravitational spreading in the tectonic and volcanic evolution of Mt. Etna. Nature 357:231–235

    Google Scholar 

  • Borgia A, Lanari R, Sansosti E, Tesauro M, Berardino P, Fornaro G, Neri M, Murray JB (2000) Actively growing anticlines beneath Catania from the distal motion of Mount Etna's decollement measured by SAR interferometry and GPS. Geophys Res Lett 27:3409–3412

    Google Scholar 

  • Bousquet JC, Lanzafame G (1986) Déformations compressives quaternaires au bord sud de l'Etna. C R Acad Sci Paris 303:235–240

    PubMed  Google Scholar 

  • Bousquet JC, Lanzafame G (2001) Nouvelle interprétation des fractures des éruptions latérales de l'Etna: conséquences pour son cadre tectonique. Bull Soc Géol Fr 172:455–467

    Google Scholar 

  • Bottari A, Lo Giudice E, Patanè G, Romano R, Sturiale C (1975) L'eruzione etnea del gennaio-marzo 1974. Riv Miner Siciliana 154:175–198

    Google Scholar 

  • Calvari S, Groppelli GL, Pasquarè G (1994) Preliminary geological data on the south-western walls of Valle del Bove, Mt. Etna (Sicily). Acta Vulcanol 5:15–30

    Google Scholar 

  • Chadwick JR, Dieterich JH (1995) Mechanical modeling of circumferential and radial dike intrusion on Galapagos volcanoes. J Volcanol Geotherm Res 66:37–52

    Article  CAS  Google Scholar 

  • Coltelli M, Garduño VH, Neri M, Pasquarè G, Pompilio M (1994) Geology of the northern wall of Valle del Bove, Etna (Sicily). Acta Vulcanol 5:55–68

    Google Scholar 

  • Corsaro R, Neri M, Pompilio M (2002) 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 72:1–19

    Google Scholar 

  • Cristofolini R, Lentini F, Patanè G, Rasà R (1979) Integrazione di dati geologici, geofisici, e metrologici per la stesura di un profilo crostale in corrispondenza dell'Etna. Boll Soc Geol It 98:239–247

    Google Scholar 

  • Cronin SJ, Bebbington M, Lai CD (2001) A probabilistic assessment of eruption recurrence of Taveuni volcano, Fiji. Bull Volcanol 63:274–288

    Article  Google Scholar 

  • Decker RW (1987) Dynamics of Hawaiian volcanoes: an overview. US Geological Survey Professional Paper 1350:997–1018

    Google Scholar 

  • Di Geronimo I, Ghisetti F, Lentini F, Mezzani L (1978) Lineamenti neottettonici della Sicilia orientale. Mem Soc Geol It 19:543–549

    Google Scholar 

  • Dvorak JJ, Nakamura A (1987) A hydraulic model to explain variations in summit tilt rate at Kilauea and Mauna Loa volcanoes. US Geol Surv Prof Pap 1350:1281–1296

    Google Scholar 

  • Ferrari L, Garduño VH, Neri M (1991) I dicchi della valle del Bove, Etna: un metodo per stimare le dilatazioni di un apparato vulcanico. Mem Soc Geol It 47:495–508

    Google Scholar 

  • Fiske RS, Jackson ED (1972) Orientation and growth of Hawaiian volcanic rifts: the effect of regional structure and gravitational stresses. Proc R Soc Lond 329:299–326

    Google Scholar 

  • Froger JL, Merle O, Briole P (2001) Active spreading and regional extension at Mount Etna imaged by SAR interferometry. Earth Planet Sci Lett 187:245–258

    Article  CAS  Google Scholar 

  • Garduño VH, Neri M, Pasquarè G, Borgia A, Tibaldi A (1997) Geology of the NE Rift of Mount Etna, Sicily (Italy). Acta Vulcanol 9:91–100

    Google Scholar 

  • Gillot PY, Kieffer G, Romano R (1994) The evolution of Mount Etna in the light of potassium-argon dating. Acta Vulcanol 5:81–87

    Google Scholar 

  • Geshi N, Shimano T, Chiba T, Nakada S, (2002) Caldera collapse during the 2000 eruption of Miyakejima volcano, Japan. Bull Volcanol 64:55–68

    Article  Google Scholar 

  • Gudmundsson A (1987) Lateral magma flow, caldera collapse and a mechanism of large eruptions in Iceland. J Volcanol Geotherm Res 34:65–78

    Google Scholar 

  • Gudmundsson A (1995) The geometry and growth of dykes. In: Baer G, Heimann A (eds), Physics and chemistry of dykes 23–33. Balkema, Rotterdam

  • Gudmundsson A (1998) Magma chambers modeled as cavities explain the formation of rift zone central volcanoes and their eruption and intrusion statistics. J Geophys Res 103:7401–7412

    Google Scholar 

  • Gudmundsson A (2002) Emplacement and arrest of sheets and dykes in central volcanoes. J Volcanol Geotherm Res 116:279–298

    Article  CAS  Google Scholar 

  • Gudmundsson A, Brenner SL (2001) How hydrofractures become arrested. Terra Nova 13:456–462

    Article  Google Scholar 

  • Gudmundsson A, Fjeldskaar I, Brenner SL (2002) Propagation pathways and fluid transport of hydrofractures in jointed and layered rocks in geothermal fields. J Volcanol Geotherm Res 116:257–278

    Article  CAS  Google Scholar 

  • Holcomb RT (1987) Eruptive history and long-term behaviour of Kilauea volcano. US Geol Surv Prof Pap 1350:261–350

    Google Scholar 

  • Jonsson S, Zebker H, Cervelli P, Segall P, Garbeil H, Mouginis-Mark P, Rowland S (1999) A shallow-dipping dike fed the 1995 flank eruption at Fernandina volcano, Galapagos, observed by satellite radar interferometry. Geophys Res Lett 26:1077–1080

    Article  Google Scholar 

  • Kieffer G (1985) Évolution structurale et dynamique d'un grand volcan polygénique: stade d'édification et activité actuelle de l'Etna. PhD Thesis, Univ Clermont-Ferrand II, 497 pp

  • Labaume P, Bousquet JC, Lanzafame G, (1990) Early deformations at a submarine compressive front: the Quaternary Catania foredeep south Mt. Etna, Sicily. Tectonophysics 177:349–366

    Google Scholar 

  • Lanzafame G, Leonardi A, Neri M, Rust D (1997a) Late overthrust of the Appenine-Maghrebian Chain at the NE periphery of Mt. Etna, Italy. C R Acad Sci Paris 324:325–332

    Google Scholar 

  • Lanzafame G, Neri M, Coltelli M, Lodato L, Rust D (1997b) North-South compression in the Mt. Etna region (Sicily): spatial and temporal distribution. Acta Vulcanol 9:121–133

    Google Scholar 

  • Lanzafame G, Neri M, Acocella V, Billi A, Funiciello R, Giordano G (2003) July–August 2001 Etna eruption: deformative pattern and its significance. Journal of the Geological Society of London (in press)

  • Lo Giudice E, Rasà R (1992) Very shallow earthquakes and brittle deformation in active volcanic areas. The Etnean region as an example. Tectonophysics 202:257–268

    Google Scholar 

  • Lockwood JP, Dvorak JJ, English TT, Koyanagi RY, Okamura AT, Summers ML, Tanigawa WR (1987) Mauna Loa 1974–1984. A decade of intrusive and extrusive activity. US Geol Surv Prof Pap 1350:537–570

    Google Scholar 

  • McClelland L, Simkin T, Summers M, Nielsen E, Stein TC (1989) Global volcanism, 1975–1985. Prentice Hall, Englewood Cliffs, 657 pp

  • McGuire WJ (1982) Evolution of the Etna volcano: information from the southern wall of the Valle del Bove caldera. J Volcanol Geotherm Res 13:241–271

    Google Scholar 

  • McGuire WJ, Pullen AD (1989) Location and orientation of eruptive fissures and feeder-dykes at Mount Etna: influence of gravitational and regional stress regimes. J Volcanol Geotherm Res 38:325–244

    Google Scholar 

  • Merle O, Borgia A (1996) Scaled experiments of volcanic spreading. J Geophys Res 101:13805–13817

    Google Scholar 

  • Monaco C, Tapponier P, Tortorici L, Gillot PY (1997) Late Quaternary slip rates on the Acireale-Piedimonte normal faults and tectonic origin of Mt. Etna (Sicily). Earth Planet Sci Lett 147:125–139

    Article  CAS  Google Scholar 

  • Monaco C, Tortorici L (2000) Active faulting in the Calabrian arc and eastern Sicily. J Geodyn 29:407–424

    Article  Google Scholar 

  • Murray JB (1994) Elastic model of the actively intruded dyke feeding the 1991–1993 eruption of Mt. Etna, derived from ground deformation measurements. Acta Vulcanol 4:97–99

    Google Scholar 

  • Murray JB, Pullen AD (1984) Three dimensional model of feeder conduit of the 1983 eruption of Mount Etna volcano, from ground deformation measurements. Bull Volcanol 47:1145–1163

    Google Scholar 

  • Murru M, Montuosi C, Wiss M, Privitera E (1999) The locations of magma chambers at Mt. Etna, Italy, mapped by b-values. Geophys Res Lett 26:2553–2556

    Google Scholar 

  • Neri M, Garduño VH, Pasquarè G, Rasà R (1991) Studio strutturale e modello cinematico della Valle del Bove e del settore nord-orientale etneo. Acta Vulcanol 1:17–24

    Google Scholar 

  • Patanè D, Chiarabba C, Cocina O, De Gori P, Moretti M, Boschi E (2002) Tomographic images and 3D earthquake locations of the seismic swarm preceding the 2001 Mt. Etna eruption: evidence for a dyke intrusion. Geophys Res Lett 29 NO10, 101029/2001 GLO14391

    Google Scholar 

  • Pollard DD, Delaney PT, Duffield WA, Endo ET, Okamura AT (1983) Surface deformation in volcanic rift zones. Tectonophysics 94:541–584

    Google Scholar 

  • Pollard DD, Aydin A (1984) Propagation and linkage of oceanic ridge segments. J Geophys Res 89:10017–10028

    Google Scholar 

  • Research Staff of the Istituto Nazionale di Geofisica e Vulcanologia — Catania, Italy (2001) Multidisciplinary approach yields insight into Mt. Etna eruption. EOS, Trans AGU 52:653–656

    Google Scholar 

  • Rittmann, A (1973): Structure and evolution of Mount Etna. Philos Trans R Soc Lond 274 A:5–16

    Google Scholar 

  • Romano R (1982) Succession of the volcanic activity in the Etnean area. Mem Soc Geol It 23:27–48

    CAS  Google Scholar 

  • Rubin AM, Pollard DD (1987) Origins of blade-like dikes in volcanic rift zones. US Geol Surv Prof Pap 1350:1449–1470

    Google Scholar 

  • Rubin AM (1992) Dike-induced faulting and graben subsidence in volcanic rift zones. J Geophys Res 97:1839–1858

    Google Scholar 

  • Rust D, Neri M (1996) The boundaries of large-scale collapse on the flanks of Mount Etna, Sicily. In: McGuire WC, Jones AP, Neuberg J (eds) Volcano instability on Earth and other planets. Geol Soc Lond Spec Publ 110:193–208

    Google Scholar 

  • Sumner JM (1998) Formation of clastogenic lava flows during fissure eruption and scoria collapse: the 1986 eruption of Izu-Oshima volcano, eastern Japan. Bull Volcanol 60:195–212

    Article  Google Scholar 

  • Takada A (1997) Cyclic flank-vent and central-vent eruption patterns. Bull Volcanol 58:539–556

    Article  Google Scholar 

  • Tanguy H, Kieffer G (1993) Les éruptions de l'Etna et leurs mécanismes. Mem Soc Geol Fr 163:239–252

    Google Scholar 

  • Tazieff H, Le Guern F (1971) Signification tectonique et mécanisme de l'éruption d'avril-mai-juin 1971 de l'Etna. C R Acad Sci Paris 272:3252–3255

    Google Scholar 

  • Tedesco D (2002) The January 2002 eruption of Mount Nyiragongo, DRC: dynamics andhazard. Proc EGS meeting Nice, France, April 2002 Abstract vol, p 111

  • Thorwarth M, Dahm T (2002) Three-D stress field around a rising fluid-filled crack. Proc EGS meeting, Nice, France, April 2002. Abstract vol, p 308

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Acknowledgements

The authors wish to thank F. Barberi and R. Funiciello for their encouragement. R. Funiciello provided unique data on the historical flank eruptions of Vesuvio. A. Billi, G. Giordano and G. Lanzafame participated in the field work. B. Behncke provided useful suggestions and improved the English. The reviewers A. Gudmundsson and O. Merle and the editor R. Cioni provided useful comments. This work was partly financed by GNDT funds (under the responsibility of C. Faccenna).

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  1. Dip. Scienze Geologiche Roma TRE, Largo S.L. Murialdo 1, 00146 , Roma, Italy

    V. Acocella

  2. Istituto Nazionale di Geofisica e Vulcanologia, Piazza Roma 2, 95123 , Catania, Italy

    M. Neri

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  1. V. Acocella
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  2. M. Neri
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Correspondence to V. Acocella.

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Editorial responsibility: R. Cioni

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Acocella, V., Neri, M. What makes flank eruptions? The 2001 Etna eruption and its possible triggering mechanisms. Bull Volcanol 65, 517–529 (2003). https://doi.org/10.1007/s00445-003-0280-3

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