Deep Structure of the Zone of Tolbachik Fissure Eruptions (Kamchatka, Klyuchevskoy Volcano Group): Evidence from a Complex of Geological and Geophysical Data

Kugaenko, Yu. A.; Салтыков, В. А.; Gorvatikov, A. V.; Stepanova, M. Yu.

doi:10.1134/s1069351318030059

Cited by 9 publications

(6 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vertical cross sections along microseismic profiles 1-3 ( Fig. 5) showing deep distributions of relative seismic velocity, modified after (Kugaenko et al, 2013(Kugaenko et al, , 2018. In this view the low velocity heterogeneities are light-colored.…”

Section: Discussionmentioning

confidence: 88%

“…The conceptual scheme of magma plumbing of Tolbachik VF on a base of vertical cross section along the microseismic profile T (Fig. 7), modified after (Volynets and Kugaenko, 2015;Kugaenko et al, 2018). Arrows indicate possible pathways for basaltic magmas of different composition according to the model of magma fractionation and mixing (Portnyagin et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…This system allows various ways of magma supply to the surface (Figs. 7, 8) (Kugaenko et al, 2018;Volynets and Kugaenko, 2015). Elements of the magma plumbing system differ in various segments of TD.…”

Section: About the Structure Of The Magmatic Plumbing Systemmentioning

confidence: 99%

“…G1magma storage by (Ermakov et al, 2014). M1, M2, M3elements of magma plumbing system under central part of Tolbachik VF according to MSM results (Kugaenko et al, 2013(Kugaenko et al, , 2018 magma reservoirs under Plosky Tolbachik stratovolcano, described in (Ermakov et al, 2014;Fedotov et al, 2011;Belousov et al, 2015).…”

Section: About the Structure Of The Magmatic Plumbing Systemmentioning

confidence: 99%

See 3 more Smart Citations

Magmatic plumbing systems of the monogenetic volcanic fields: A case study of Tolbachinsky Dol, Kamchatka

Kugaenko

Volynets

2019

Journal of Volcanology and Geothermal Research

View full text Add to dashboard Cite

Clusters of small-volume volcanoes that individually may be defined as monogenetic, but have interlinked and interconnected plumbing systems, are used to be categorized as monogenetic volcanic fields (MVF). We argue that such volcanic clusters should be distinguished as separate type of volcanism, intermediate between monogenetic and polygenetic. The magma plumbing system structure of the MVF (its complexity and polymagmatic character) is the key argument for the potential separation of them in a classification. To avoid confusion caused by genetic meaning of the used words we suggest using a term "areal volcanism" or "areal volcanic fields" (AVF instead of MVF) as defining this special type of volcanic activity. Here we provide a review of the main characteristic features of one of the largest Holocene AVF, which is active nowthe Tolbachik field of cinder cones in the southern part of Klyuchevskaya volcano group (Kamchatka), known in the literature as Tolbachinsky Dol. This paper is focused on the research of magma plumbing system. We consider structural, morphological, geological, geochemical and petrological data on the erupted basalts and their genesis. Specially planned seismic experiments made in 2010-2015 (seismic tomography and microseismic sounding) allowed modeling of the principal elements of the magma plumbing system of Tolbachik AVF. Analysis of the investigations made in this area shows that Tolbachik AVF has a complex, dynamic, variable magmatic feeding system, which can be visualized as a superposition of subvertical and sublateral magma conduits. The contrast composition of the erupted rocks is caused by their different, although genetically connected, magma sources and mixing processes. One of the long-lived eruptive centers of Tolbachik AVF is Plosky Tolbachik stratovolcano, which lost its independent activity and was captured by Tolbachik AVF in Holocene. The AVF formed rejuvenated volcanism using the feeding system of the stratovolcano like an "old anthill". The magma plumbing system characteristics of Tolbachinsky Dol strongly support the idea of separation of AVF from monogenetic volcanism type in the classification.

show abstract

Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: About the Structure Of The Magmatic Plumbing Systemmentioning

confidence: 99%

Section: About the Structure Of The Magmatic Plumbing Systemmentioning

confidence: 99%

See 2 more Smart Citations

Magmatic plumbing systems of the monogenetic volcanic fields: A case study of Tolbachinsky Dol, Kamchatka

Kugaenko

Volynets

2019

Journal of Volcanology and Geothermal Research

View full text Add to dashboard Cite

show abstract

“…Kugaenko & Volynets (2019) demonstrate that the Tolbachik massif comprises a complicated magma plumbing system, with independent magma conduits and reservoirs, arranged in a subvertical and sublateral geometry. Additional geophysical data of Kugaenko et al (2018) also demonstrate that there is a shallow magma reservoir at a depth of ca. 4-8 km, developed along the rift system from the central to the southern part of the volcanic massif.…”

Section: Isolated Magma Batches After Deeper Mixingmentioning

confidence: 93%

Tracing Volatiles, Halogens, and Chalcophile Metals during Melt Evolution at the Tolbachik Monogenetic Field, Kamchatka

Iveson

Humphreys

Jenner

et al. 2022

Journal of Petrology

View full text Add to dashboard Cite

Melt storage and supply beneath arc volcanoes may be distributed between a central stratovolcano and wider fields of monogenetic cones, indicating complex shallow plumbing systems. However, the impact of such spatially variable magma storage conditions on volatile degassing and trace element geochemistry is unclear. This study explores magma generation and storage processes beneath the Tolbachik volcanic field, Kamchatka, Russia, in order to investigate the evolution of the magmatic volatile phase and, specifically, the strong enrichment of chalcophile metals (specifically, Cu) in this system. We present new geochemical data for a large suite of olivine- and clinopyroxene-hosted melt inclusions (and host phenocrysts) from five separate monogenetic cones within the Tolbachik volcanic field. These high-Al composition magmas likely reflect the homogenised fractionation products of primitive intermediate-Mg melt compositions, stored at shallow depths after significant fractional crystallisation. Boron isotope compositions and incompatible trace element ratios of the melt inclusions suggest a deeper plumbing system that is dominated by extensive fractional crystallisation, and fed by melts derived from an isotopically homogeneous parental magma composition. Volatile components (H2O, CO2, S, Cl, F) show that magmas feeding different monogenetic cones had variable initial volatile contents, and subsequently experienced different fluid-saturated storage conditions and degassing histories. We also show that melts supplying the Tolbachik volcanic field are strongly enriched in Cu compared to almost all other Kamchatka rocks, including samples from the Tolbachik central stratocones, and other volcanoes situated in close proximity in the Central Kamchatka Depression. The melt inclusions record Cu concentrations ≥ 450 μg/g at ca. 4–5 wt.% MgO, which can only be explained by bulk incompatible partitioning behaviour of Cu i.e. evolution under sulfide-undersaturated conditions. We suggest that initial mantle melting in this region exhausted mantle sulfides, leading to sulfide undersaturated primitive melts. This sulfide-free model for the high-Al cone melts is further supported by S/Se and Cu/Ag values that overlap those of the primitive mantle and MORB array, with bulk rock Cu/Ag ratios also overlapping other with other global arc datasets for magma evolution prior to fractionation of a monosulfide solid solution. Therefore, the combination of novel chalcophile metal analyses with trace element, isotopic, and volatile data is a powerful tool for deciphering complex magmatic evolution conditions across the entire volcanic field.

show abstract

Study of Deep Structure of the Kimberlite Pipe Named After M. Lomonosov of the Arkhangelsk Diamondiferous Province Obtained by Joint Using of Passive Seismic and Radiometric Methods

Данилов

Yakovlev

Afonin

2021

Pure Appl. Geophys.

View full text Add to dashboard Cite

Deep Structure of the Zone of Tolbachik Fissure Eruptions (Kamchatka, Klyuchevskoy Volcano Group): Evidence from a Complex of Geological and Geophysical Data

Cited by 9 publications

References 54 publications

Magmatic plumbing systems of the monogenetic volcanic fields: A case study of Tolbachinsky Dol, Kamchatka

Magmatic plumbing systems of the monogenetic volcanic fields: A case study of Tolbachinsky Dol, Kamchatka

Tracing Volatiles, Halogens, and Chalcophile Metals during Melt Evolution at the Tolbachik Monogenetic Field, Kamchatka

Study of Deep Structure of the Kimberlite Pipe Named After M. Lomonosov of the Arkhangelsk Diamondiferous Province Obtained by Joint Using of Passive Seismic and Radiometric Methods

Contact Info

Product

Resources

About