Morpho-sedimentary characteristics of the volcaniclastic apron around Stromboli volcano (Italy)

Casalbore, Daniele; Romagnoli, Claudia; Chiocci, Francesco Latino; Frezza, Virgilio

doi:10.1016/j.margeo.2010.01.004

Cited by 72 publications

(49 citation statements)

References 68 publications

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“…Although some workers may incorrectly use the term volcaniclastic apron to loosely refer to any accumulation of sediment around a volcano or chain of volcanoes, the term has been used in a much more rigorous sense by sedimentologists over the past 40 y (Karig and Moore, 1975b;Sample and Karig, 1982;Carey and Sigurdsson, 1984;Farquharson et al, 1984;Fisher, 1984;Busby-Spera, 1985, 1988Cas and Wright, 1987;Smith, 1987;White and BusbySpera, 1987;Houghton and Landis, 1989;Palmer and Walton, 1990;Fisher and Smith, 1991;Fisher and Schmincke, 1994;Smith and Landis, 1995;Orton, 1996;Wright, 1996;Mitchell, 2000;Carey, 2000;Gamberi, 2001;Karátson and Németh, 2001;Allen et al, 2006;Casalbore et al, 2010;Carey and Schneider, 2011). In these papers, a volcaniclastic apron is defined as a thick accumulation of coarse volcanic debris that fringes a volcano or a chain of volcanoes and builds outward from them; volcaniclastic aprons are fan shaped or are composed of coalescing fans that form a wedge.…”

Section: Interpretation Of Depositional Environment At Site U1437: Dementioning

confidence: 99%

Expedition 350 summary

Tamura¹,

Busby²,

Blum³

et al. 2015

Proceedings of the International Ocean Discovery Program

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International Ocean Discovery Program (IODP) Hole U1436A (proposed Site IBM-4GT) lies in the western part of the Izu fore-arc basin, ~60 km east of the arc-front volcano Aogashima, ~170 km west of the axis of the Izu-Bonin Trench, and 1.5 km west of Ocean Drilling Program (ODP) Site 792, at 1776 meters below sea level (mbsl). It was drilled as a 150 m deep geotechnical test hole for potential future deep drilling (5500 meters below seafloor [mbsf ]) at proposed Site IBM-4 using the D/V Chikyu. Core from Site U1436 yielded a rich record of Late Pleistocene explosive volcanism, including a distinctive black glassy mafic ash layer that may record a large-volume subaqueous eruption on the Izu arc front. Because of the importance of this discovery, Site U1436 was drilled in three additional holes (U1436B, U1436C, and U1436D), as part of a contingency operation, in an attempt to get better recovery on the black glassy mafic ash layer and its enclosing sediments and to better constrain its thickness.IODP Site U1437 is located in the Izu rear arc, ~330 km west of the axis of the Izu-Bonin Trench and ~90 km west of the arc-front volcanoes Myojinsho and Myojin Knoll, at 2117 mbsl. The primary scientific objective for Site U1437 was to characterize "the missing half of the subduction factory" because numerous ODP/Integrated Ocean Drilling Program sites had been drilled in the arc-front to fore-arc region (i.e., ODP Site 782A Leg 126), but this was the first site to be drilled in the rear-arc region of the Izu arc. A complete view of the arc system is needed to understand the formation of oceanic arc crust and its evolution into continental crust. Site U1437 on the rear arc had excellent core recovery in Holes U1437B and U1437D, and we succeeded in hanging the longest casing ever in the history of R/V JOIDES Resolution scientific drilling (1085.6 m) in Hole U1437E and cored to 1806.5 mbsf.The stratigraphy at Site U1437 was divided into seven lithostratigraphic units (I-VII) that were distinguished from each other based on the proportions and characteristics of tuffaceous mud/mudstone and interbedded tuff, lapilli-tuff, and tuff-breccia. The section is much more mud rich than expected, with ~60% tuffaceous mud for the section as a whole (89% in the uppermost 433 m) and high sedimentation rates of 100-260 m/My for the upper 1320 m (Units I-V). The proportion (40%) and grain size of volcaniclastics are much smaller than expected for an intra-arc basin, composed half of ash/tuff and half of lapilli-tuff of fine grain size (clasts <3 cm). These volcaniclastics were deposited by suspension settling through water and from density currents, in relatively distal settings. Volcanic blocks are only sparsely scattered through the lowermost 25% of the section (Units VI and VII, 1320-1806.5 mbsf ), which includes hyaloclastite, in situ quench-fragmented blocks, and a rhyolite peperite intrusion (i.e., proximal deposits). The transition from unconsolidated to lithified rocks occurred progressively; however, sediments were consider...

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Section: Interpretation Of Depositional Environment At Site U1437: Dementioning

confidence: 99%

Expedition 350 summary

Tamura¹,

Busby²,

Blum³

et al. 2015

Proceedings of the International Ocean Discovery Program

View full text Add to dashboard Cite

show abstract

“…This phenomenon was triggered by the injection of a lateral intrusion (Neri et al 2008) and caused two tsunamis, which affected the coastline with a maximum run-up of 6-7 m at Stromboli village (Tinti et al 2005). The submarine flanks of Stromboli volcano are characterized by mass-wasting, affecting a large part of the entire submarine area and often influencing the stability of subaerial slopes (Casalbore et al 2010). …”

Section: Geological Settingmentioning

confidence: 99%

Susceptibility of intrusion-related landslides at volcanic islands: the Stromboli case study

et al. 2017

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Susceptibility of intrusion-related landslides in an active volcano was evaluated coupling the landslide susceptibility estimation by random forest (RF), and the probabilistic volcanic vent opening distribution, as proxy for magma injection, using the QVAST tool. In order to develop and test the method proposed here, the RF/QVAST approach was adopted for Stromboli volcano (Southern Italy) since it experienced moderate to huge instability events, it is geomorphologically prone to instability events, and it is affected by active intense volcanic activity that can produce slope instability. The main destabilizing factors of the volcanic flanks are the slope, the aspect, the terrain roughness, the land cover and the litho-technical features of the outcropping rocks. Estimation of volcanic susceptibility shows that the areas with high probability of new vent opening are located in the north-western unstable volcano flank (Sciara del Fuoco), in the volcano summit and the north-eastern volcano flank coherent with the possible reactivation of the eruptive fissures related to the regional tectonic setting. The areas with higher probability of intrusion-related landslides are located in the upper part of the Sciara del Fuoco, while the rest of the island show moderate to low probability of intrusion-related landslide occurrence.

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“…This might be due to the fact that landslide mass either lost cohesion during failure (static liquefaction, as proposed for the 2002 Stromboli landslide by Tommasi et al, 2008) or failed as a cohesive mass and disintegrated downslope, therefore evolving into debris flows and/or turbidity currents (Mulder and Choconat, 1996;Locat and Lee, 2000). Most slide scars represent the headwall of channelized features elongated downslope, indicating a retrogressive evolution for their development and, in turn, smaller mobilized volumes (Casalbore et al, 2010).…”

Section: Other Possible Tsunamigenic Sourcesmentioning

confidence: 99%