Analogue models of collapse calderas and resurgent domes

Acocella, Valerio; Cifelli, Francesca; Funiciello, R.

doi:10.1016/s0377-0273(00)00201-8

Cited by 140 publications

(86 citation statements)

References 68 publications

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“…Subsidence of large calderas associated with silicic magma chambers is often followed by resurgent updoming in their central part caused by emplacement of silicic magma underneath the dome. Such calderas are termed resurgent calderas [45,[257][258][259].…”

Section: Stratovolcanoes With Caldera or Volcanic Grabenmentioning

confidence: 99%

Neogene-Quaternary Volcanic forms in the Carpathian-Pannonian Region: a review

et al. 2010

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Neogene to Quaternary volcanic/magmatic activity in the Carpathian-Pannonian Region (CPR) occurred between 21 and 0.1 Ma with a distinct migration in time from west to east. It shows a diverse compositional variation in response to a complex interplay of subduction with roll-back, back-arc extension, collision, slab break-off, delamination, strike-slip tectonics and microplate rotations, as well as in response to further evolution of magmas in the crustal environment by processes of differentiation, crustal contamination, anatexis and magma mixing. Since most of the primary volcanic forms have been affected by erosion, especially in areas of post-volcanic uplift, based on the level of erosion we distinguish: (1) areas eroded to the basement level, where paleovolcanic reconstruction is not possible; (2) deeply eroded volcanic forms with secondary morphology and possible paleovolcanic reconstruction; (3) eroded volcanic forms with remnants of original morphology preserved; and (4) the least eroded volcanic forms with original morphology quite well preserved. The large variety of volcanic forms present in the area can be grouped in a) monogenetic volcanoes and b) polygenetic volcanoes and their subsurface/intrusive counterparts that belong to various rock series found in the CPR such as calc-alkaline magmatic rock-types (felsic, intermediate and mafic varieties) and alkalic types including K-alkalic, shoshonitic, ultrapotassic and Na-alkalic. The following volcanic/subvolcanic forms have been identified: (i) domes, shield volcanoes, effusive cones, pyroclastic cones, stratovolcanoes and calderas with associated intrusive bodies for intermediate and basic calc-alkaline volcanism; (ii) domes, calderas and ignimbrite/ash-flow fields for felsic calc-alkaline volcanism and (iii) dome flows, shield volcanoes, maars, tuffcone/tuff-rings, scoria-cones with or without related lava flow/field and their erosional or subsurface forms (necks/ plugs, dykes, shallow intrusions, diatreme, lava lake) for various types of K-and Na-alkalic and ultrapotassic magmatism. Finally, we provide a summary of the eruptive history and distribution of volcanic forms in the CPR using several sub-region schemes.

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Section: Stratovolcanoes With Caldera or Volcanic Grabenmentioning

confidence: 99%

Neogene-Quaternary Volcanic forms in the Carpathian-Pannonian Region: a review

et al. 2010

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“…Concentric faults and fractures surrounding the Braden Breccia pipe (Fig. 2) are interpreted to be the result of a period of subsidence related to magma withdrawal prior to the Braden Breccia event (Koide and Bhattacharji, 1975;Acocella et al, 2000;Cannell et al, 2005). The close spatial association of these faults with the well-defined Mo-rich halo around the Braden Breccia observed at shallow mine levels ( Fig.…”

mentioning

confidence: 97%

The Distribution and Timing of Molybdenite Mineralization at the El Teniente Cu-Mo Porphyry Deposit, Chile

et al. 2015

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“…This concept has been adopted to explain geophysical observations (e.g., Peltier et al, 2008;Kusumoto & Gudmundsson, 2009) and as a basis for analogue models (Acocella et al, 2000;Holohan et al, 2011), and latterly has been invoked to explain ice surface subsidence at Bárðarbunga in 2014 − 2015 (Sigmundsson et al, 2015). A variant hypothesis, pertinent to the Bárðarbunga case, is that lavas in large fissure eruptions can be fed by regional-scale vertical channelling dikes, injecting magma into shallow sills from much deeper reservoirs (Gudmundsson et al, 2014).…”

Section: Discussion Of the Bárðarbunga Casementioning

confidence: 99%

Volcano Statistics Casebook: Tentative evidence from two real-time analyses for an Earth tide influence on volcano-seismic events

Aspinall¹

2016

SIV

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Based on rapid analyses done in near real-time and in support of scientific advice, I present two cases of prima facie evidence for an earth tide triggering effect on earthquake activity during two volcanic eruption episodes: the first, in relation to large magnitude earthquakes, occurred during August 2014 in the 2014 − 2015 Bárðarbunga-Holuhruan, Iceland, eruption; and the second concerns the timing of VT strings at the Soufrière Hills Volcano, Montserrat. In both cases, statistical testing of the hypothesis that the timings of the seismic events of interest and vertical earth tide phase were not correlated produced probabilities at or below a 5% significance level, suggesting rejection of the hypothesis can be argued. This note outlines the method used for computing earth tide amplitudes at the two volcanoes and the basis and results of the Schuster test for relative phase timings; some comments on the volcanological contexts are added. These findings suggest that further, more formal analysis may be warranted.

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Analogue models of collapse calderas and resurgent domes

Cited by 140 publications

References 68 publications

Neogene-Quaternary Volcanic forms in the Carpathian-Pannonian Region: a review

Neogene-Quaternary Volcanic forms in the Carpathian-Pannonian Region: a review

The Distribution and Timing of Molybdenite Mineralization at the El Teniente Cu-Mo Porphyry Deposit, Chile

Volcano Statistics Casebook: Tentative evidence from two real-time analyses for an Earth tide influence on volcano-seismic events

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