Maxim Gavrilenko

Université Grenoble Alpes · Institut des Sciences de la Terre (ISTerre)

Trace element analysis of olivine is challenging but vital, since trace elements in olivine can potentially record crystallization conditions and, correspondingly, conditions of magma generation, evolution, and transport dynamics. Electron microprobe analysis (EPMA) is one of the most widely used methods for trace element analysis in olivine for ma...

Trace element analysis in olivine is challenging but vital, since trace element concentrations in olivine could potentially record conditions of olivine crystallization and, correspondingly, conditions of magma generation, evolution, and/or transport dynamics. Currently, electron microprobe analyses (EPMA) for olivine remain the most popular for ma...

Trace element analysis in olivine is challenging but vital, since trace element concentrations in olivine could potentially record conditions of olivine crystallization and, correspondingly, conditions of magma generation, evolution, and/or transport dynamics. Currently, electron microprobe analyses (EPMA) for olivine remain the most popular for ma...

Mafic enclaves preserve a record of deep differentiation of primitive magmas in arc settings. We analyze the petrology and geochemistry of mafic enclaves from Shiveluch volcano in the Kamchatka peninsula to determine the differentiation histories of primitive magmas and to estimate their pressures, temperatures, and water contents. Amphibole inclus...

Most magmas experience a tortuous and complex journey from their source regions to the surface with the suspended crystals acting as the primary recorders. However, while all crystals are part of the same system, each individual crystal provides a unique record of the sequence of events; crystals arrive in the system at different times and stages,...

Dissolved in magma, H2O plays a significant role in generation, evolution, and eruption of arc magmas. Mineral-hosted glassy melt inclusions (MIs) have been used to quantify magma volatile contents for several decades. Recent studies have demonstrated that hydrogen diffusion within a host mineral is rapid, causing MIs to be partially open to H2O lo...

Shiveluch volcano is one of the most active volcanoes of Kamchatka, and has produced almost twice as many large (VEI 4 or higher) eruptions than any other volcano in the world during the Holocene. Shiveluch erupts predominantly andesites, however tephrochronological studies have identified at least two mafic eruptive events in recent Shiveluch hist...

Here we present a study on the quenchability of hydrous mafic melts. We show via hydrothermal experiments that the ability to quench a mafic hydrous melt to a homogeneous glass at cooling rates relevant to natural samples has a limit of no more than 9 ± 1 wt% of dissolved H2O in the melt. We performed supra-liquidus experiments on a mafic starting...

The maximum dissolved H2O content of magmas plays a pivotal role in the generation, evolution, ascent, and eruption of arc magmas. However, the pre-eruptive dissolved H2O content of magmas is difficult to estimate for many reasons including but not limited to nearly complete degassing of magmas during ascent, eruption, and cooling. A novel olivine-...

The maximum dissolved H2O content of magmas plays a pivotal role in the generation, evolution, ascent, and eruption of arc magmas. However, the pre-eruptive dissolved H2O content of magmas is difficult to estimate for many reasons including but not limited to nearly complete degassing of magmas during ascent, eruption, and cooling. A novel olivine-...

Mixing of mafic and felsic magmas is hypothesized to produce andesitic magma at arcs. Studies of andesites support the magma mixing hypothesis, but fractional crystallization also plays a key role. In this study, we examine the petrology and geochemistry of andesite-hosted mafic enclaves from the eruption of Shiveluch volcano in Kamchatka in order...

The amount of H2O that cycles through convergent margins controls the path and time that magmas take from the subducting slab-mantle interface to Earth’s surface. Maximum dissolved H2O content in magmas plays a pivotal role in the generation, and evolution of arc melts. A novel olivine-based hygrometer [1] utilizes the effect of magmatic H2O on CaO...

Mineral-hosted glassy melt inclusions (MIs) have been used to quantify magma volatile contents for several decades. Despite the growing number of volatile studies utilizing MIs, it has not been tested whether there is a physical limit on how much dissolved volatiles a glassy MI can contain. We explored the limits of MIs as hydrous magma recorders i...

Dissolved in magma, H2O plays a significant role in generation, evolution, and eruption of arc magmas. Estimating pre-eruptive H2O content is challenged by near surface H2O degassing during ascent and eruption. Currently, the ‘gold-standard’ for determining pre-eruptive volatile contents in magmas is the study of mineral-hosted glassy melt inclusio...

The importance of quantifying the amount of H2O dissolved in magmas is obvious. However, pre-eruptive dissolved H2O in magmas is difficult to estimate due to nearly complete degassing of magmas during ascent, eruption, and cooling. Currently, magmatic H2O content estimations are based mostly on two methods: 1) measurements of water dissolved in mel...

18 сентября 2016 г. новый пирокластический поток распространился на юго-западном подножии вулкана Молодой Шивелуч. Обследование пирокластических отложений с отбором представительных образцов было выполнено через десять дней после извержения. В докладе представлены первые результаты анализа химического и петрографического составов пирокластического...

High precision electron microprobe analyses were obtained on olivine grains from Klyuchevskoy, Shiveluch and Gorely volcanoes in the Kamchatka Arc; Irazú, Platanar, Barva volcanoes of the Central American Arc; and mid-ocean ridge basalt (MORB) from the Siqueiros Transform. Calcium contents of these subduction zone olivines are lower than those for...

A series of large caldera-forming eruptions (361–38 ka) transformed Gorely volcano, southern Kamchatka Peninsula, from a shield-type system dominated by fractional crystallization processes to a composite volcanic center, exhibiting geochemical evidence of magma mixing. Old Gorely, an early shield volcano (700–361 ka), was followed by Young Gorely...

My study focused on magmatic evolution in different tectonic settings using mostly olivine, and volcanic whole rock chemistry together with the compositions of the minerals that it hosts, such as pyroxenes, plagioclase, spinel, and magnetite. Although volcanoes of the spreading centers (e.g. East Pacific Rise) provide the more direct petrological i...

Gorely is a shield-­type volcano in southern Kamchatka currently in an eruptive phase [1] with prior eruptions recorded in 1980 and 1984 [4]. It is comprised of three main structural units: ancient (middle Pleistocene) edifice called 'Old ­Gorely' volcano; thick ignimbrite complex, associated with a caldera forming eruption (40 ka); modern edifice...

Mike O'Hara's 1968 paper in Nature [1] was important because it demonstrated that ocean floor basalts (MORB) could not be primary magmas of mantle peridotite, a minority view of one at the time. His preferred model was that such basalts formed from more picritic primary magmas after olivine fractionation, in agreement with solutions to the primary...

Klyuchevskoy volcano is the highest active volcano in Europe and Asia (~4800 m). Morphologically it is a classic stratovolcano, but its edifice consists entirely of mafic rocks (up to 55% of SiO2). The absence of andesites and dacites suggests that Klyuchevskoy does not have a crustal magma chamber. This is supported by seismological studies, the r...

Klyuchevskoy volcano in Kamchatka (Russia) is unique in the island arc systems of Earth in having nearly continuous seismic activity beneath it at depths in excess of 20 km. Seismograms from these deep earthquakes carry an unmistakable signature of their tectonic nature. We use P-to-S (compressional to shear) converted teleseismic waves to constrai...

Klyuchevskoy volcanic group is located at the northern termination of the Kamchatka volcanic arc. It is a typical island-arc volcanic center, its lava chemistry is consistent with the subduction fluid induced melting in the mantle wedge. It is however significantly larger than any other arc volcano or volcanic group. With a volume of~7500 km3 it is...

Melt inclusions in olivine and plagioclase phenocrysts from rocks (magnesian basalt, basaltic andesite, andesite, ignimbrite, and dacite) of various age from the Gorely volcanic center, southern Kamchatka, were studying by means of their homogenization and by analyzing the glasses in 100 melt inclusions on an electron microprobe and 24 inclusions o...

Melt inclusions in olivine and plagioclase phenocrysts from rocks (magnesian basalt, basaltic andesite, andesite, ignimbrite, and dacite) of various age from the Gorely volcanic center, southern Kamchatka, were studied by means of their homogenization and by analyzing the glasses in 100 melt inclusions on an electron microprobe and 24 inclusions on...

In order to understand eruptive behavior at volcanic centers and to improve models for monitoring and prediction of volcanic eruptions, it is important to constrain magma storage conditions and transport in the system. Here the post-collapse eruptive behavior at Bezymianny and Shiveluch volcanoes, (Kamchatka Peninsula, Russia) are each compared to...

Gorely volcano, in southern Kamchatka, is a large, long-lived shield-type volcano that is currently in an eruptive phase. Prior eruptions occurred in 1980 and 1984. It is comprised of three main structural units: ancient edifice called Pra-Gorely volcano; thick ignimbrite complex, associated with a caldera forming eruption; modern edifice named 'Yo...

Complimentary data sets from whole-rock geochemical analyses including major and trace elements and mineral modal analyses are used to characterize the evolution of magma in the Bezymianny system. Bezymianny Volcano is an ideal laboratory for studies into magmatic evolution at volcanoes which have experienced edifice collapse. A comprehensive sampl...

Gorely volcano, in southern Kamchatka, is a large, long-lived shield-type volcano that is currently in an eruptive phase. Prior eruptions occurred in 1980 and 1984. It is comprised of three structural units: Pra-Gorely volcano; thick ignimbrite complex, associated with a caldera forming eruption; modern edifice named `Young Gorely'. An integrated m...

Gorely volcano is the largest eruptive center in Southern Kamchatka. It is comprised of three structural units; (1) Pra-Gorely volcano (2) a thick ignimbrite complex, associated with a caldera forming eruption (3) modern edifice named 'Young Gorely'. Geochemical studies have been conducted on all structural units of the Gorely volcanic edifice to d...

Comparison of volcanic sequences characterized by shallow intrusion, edifice collapse, and paroxysmal eruption, subsequent dome-building and intermittent explosive activity enables a broader analysis of the factors that control magmatic systems at arc volcanoes. Three historic eruptions displaying such a sequence of events are Bezymianny Volcano, K...

We conducted an integrated mineralogical-geochemical study of the structural complexities of all products from the Gorely volcanic edifice to determine genetic conditions. Gorely, in southern Kamchatka, is a large, long-lived shield-type volcano that is currently in an eruptive phase. Prior eruptions occurred in 1980 and 1984. Several complexes com...

The Mutnovsky Volcano is one of the biggest and most active volcanoes of South Kamchatka. The most recent explosive eruption of the volcano was 1960. After that time the volcano is in a stage of weak eruption that has already been continuing for more than 40 years. The analysis of seismologic data and visual observations confirmed an eruption in Ma...