Dynamics of exrtrusive dome growth and variations in chemical and mineralogical composition of Young Shiveluch andesites in 2001–2013

Gorbach, N. V.; Portnyagin, Maxim; Philosofova, T. M.

doi:10.1134/s0742046316060038

Cited by 7 publications

(2 citation statements)

References 16 publications

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“…The SiO 2 content of the lavas has increased over time, from 58.5% in 1964 and about 61% in 2001 to as much as about 63% in 2007-2008 and 2013 (Table 2). The dome is composed of hornblende-plagioclase andesite to low-silica dacite (Gorbach et al, 2016). During the 2001-2013 period, Shiveluch has undergone two major cycles of dome growth including multiple collapse events, with the largest collapse events occurring when the maximum height of the dome stabilized for an extended period at approximately 520 and 560 m. The eight collapse events within the current eruption period have been chosen for more detailed analysis based on the large deposit size (large enough to be visible in satellite images) and the availability of satellite data around the collapse date, before subsequent flows bury the deposit.…”

Section: Summary Of the Recent Eruption History Of Shiveluchmentioning

confidence: 99%

Parametric analysis of lava dome-collapse events and pyroclastic deposits at Shiveluch volcano, Kamchatka, using visible and infrared satellite data

Krippner

Belousov

Belousova

et al. 2018

Journal of Volcanology and Geothermal Research

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Section: Summary Of the Recent Eruption History Of Shiveluchmentioning

confidence: 99%

Parametric analysis of lava dome-collapse events and pyroclastic deposits at Shiveluch volcano, Kamchatka, using visible and infrared satellite data

Krippner

Belousov

Belousova

et al. 2018

Journal of Volcanology and Geothermal Research

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“…The satellite data include the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Visible-Near Infrared (VNIR), and high-resolution WorldView-02 and QuickBird-02 sensor datasets. The hornblende-plagioclase andesite lava dome at Shiveluch [Gorbach et al, 2016] has temperatures that range over of hundreds of degrees, from a cooler outer carapace to the hotter interior [Krippner et al, 2018]. The inner and hotter dome material is likely degassed to a lesser extent, resulting in pore-pressure-induced autobrecciation, in addition to the mechanical breakage from clast interactions during gravitational failure and the flowage processes that followed.…”

mentioning

confidence: 99%

Exceptionally large block-and-ash flows: a detailed study of the 2005 and 2010 eruption deposits of Shiveluch volcano

Krippner¹,

Belousov²,

Ramsey³

2018

Preprint

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Two of the largest known historic block-and-ash flow (BAF) fields are located on Shiveluch volcano, Kamchatka. The deposits were produced during retrogressive and pulsatory dome collapse events that occurred over 6-9 hour-long eruptions on 27-28 February 2005 and 27 October 2010. The BAFs that were produced by these partial dome collapse events extend up to 19 km from the dome and inundate areas of 24.1 and 22.3 km2. We used satellite and field data to investigate the surface morphology of the BAF deposits and their impact on the surrounding area. The deposit surfaces contain overlapping lobate deposits, compaction ridges, levees and channel morphologies, degassing structures, abundant large dome blocks, and large areas of syn- or immediately-post-depositional remobilization, as shown by bench scallops and arcuate scarps. The dome-collapse events produced flows with two components: the dense block-and-ash component of the flows, and the associated dilute pyroclastic surges. The surge components traveled beyond the main flow and killed vegetation to distances of nearly 300 m. The 2005 dome collapse event produced a BAF that extended 17.8 km from the dome and emplaced a large fan deposit and associated surge, which destroyed an area of forest 10 km2 in size. The October 2010 event also produced a large fan deposit with a distal channelized deposit that extended an additional 5.4 km beyond the main 2010 fan for a total distance from the dome of 19 km. Since deposition, fluvial erosion and deposition produced large areas comprised of dendritic and braided channel deposits. The surface morphology of the deposits as revealed in satellite imagery and observed in stratigraphic sections give insight into the pulsatory nature of the dome collapse events, the final moments of deposition, and the subsequent erosion of the deposits. Preservation of the deposits is exceptional due to the high-latitude location, where snow-cover is present for much of the year and erosion is limited. This detailed study of the Shiveluch deposits provides rare insight into the processes responsible for generation of large and long run-out dome-collapse BAFs in both channelized and non-channelized environments.

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Evidence for superhydrous primitive arc magmas from mafic enclaves at Shiveluch volcano, Kamchatka

Goltz

Krawczynski

Gavrilenko

et al. 2020

Contrib Mineral Petrol

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Dynamics of exrtrusive dome growth and variations in chemical and mineralogical composition of Young Shiveluch andesites in 2001–2013

Cited by 7 publications

References 16 publications

Parametric analysis of lava dome-collapse events and pyroclastic deposits at Shiveluch volcano, Kamchatka, using visible and infrared satellite data

Parametric analysis of lava dome-collapse events and pyroclastic deposits at Shiveluch volcano, Kamchatka, using visible and infrared satellite data

Exceptionally large block-and-ash flows: a detailed study of the 2005 and 2010 eruption deposits of Shiveluch volcano

Evidence for superhydrous primitive arc magmas from mafic enclaves at Shiveluch volcano, Kamchatka

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