Mud Volcanic Fluids of the Kerch–Taman Region: Geochemical Reconstructions and Regional Trends: Communication 2. Genesis of Mud Volcanic Gases and Regional Geochemical Trends

Lavrushin, V. Yu.; Aydarkozhina, A. S.; Sokol, Ella V.; Челноков, Г. А.; Петров, О. Л.

doi:10.1134/s0024490222010059

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…It seems that HCO 3 -ion is formed during water-rock-gas interaction. The associated gases for this water type contain 3-26 vol.% of CO 2 , whereas volume of CO 2 in Na-Cl waters is less than 12 vol.% [21]. Low HCO 3 concentrations confirm the absence of mixing/dilution of deep Na-Cl waters with shallow groundwaters.…”

Section: Water Chemistry and Rare Earth Elements In Mud Volcanic Watermentioning

confidence: 74%

Rare Earth Elements in Mud Volcanic Water of the North-Western Caucasus

Chelnokov,

Lavrushin,

Kharitonova

et al. 2023

J. Phys.: Conf. Ser.

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The distribution and abundance of rare earth elements in mud volcanic waters of the North-Western Caucasus were studied. Waters are represented by two types: Na-Cl and Na-HCO3-Cl. All waters are characterized by high TDS (8.1-29.5 g/l), neutral to alkaline pH (7.2–8.9), reduced conditions (Eh from -280 to +92 mV), and methane as the main associated gas. It is established that concentrations of REE vary from 0.18 to 7.02 ppb. Based on REE content and pH mud volcanic waters were subdivided into three groups. In each group the concentration of ∑REE roughly increases as pH decreases. Due to geological conditions the highest concentrations of REE are observed in mud volcanoes located within the oldest Cretaceous sediments within the flexural-fault zones of the North-Western Caucasus and the Taman region. Mud volcanoes connected with the Maikop series (₽3-N1), have lower REE concentrations. For the first time the geochemical and geological data suggest different sources of matter for mud volcanoes of the studied area.

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Section: Water Chemistry and Rare Earth Elements In Mud Volcanic Watermentioning

confidence: 74%

Rare Earth Elements in Mud Volcanic Water of the North-Western Caucasus

Chelnokov,

Lavrushin,

Kharitonova

et al. 2023

J. Phys.: Conf. Ser.

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Rare Earth Elements in the Aqueous Phase of Mud Volcanoes of the Kerch-Taman Region

Chelnokov,

Kharitonova,

Lavrushin

et al. 2023

Moscow Univ. Geol. Bull.

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Combustion Metamorphism in Mud Volcanic Events: A Case Study of the 6 May 2000 Fire Eruption of Karabetova Gora Mud Volcano

Kokh

Sokol

2023

Minerals

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The violent eruption of Karabetova Gora mud volcano on 6 May 2000 (Taman Peninsula, 45°12′16″ N; 36°47′05″ E) triggered gas ignition as a giant straight-flow vertical gas flare. The 400 m high, short-lived (~15 min) gas flare left no thermal halo on the ground surface, but the thermal shock caused melting or annealing of mud masses which became dispersed in ≤2 m3 blocks to distances within 30 m around the volcano conduit. The flare reached the maximum temperatures (~1400–1540 °C) at heights from 75 to 250 m, as estimated by a numerical simulation in SigmaFlow. Bulk melting of dehydrated mud masses was mostly limited to <1.5 cm near the surface of the blocks. Porous paralavas at the site consisted of low- and high-silica K-Al glasses (70%–80%) with residual unmolten grains of detrital quartz and fine (<30 µm) new phases: main intermediate members of the magnetite–ulvöspinel solid solutions and plagioclase (An45-61Ab37-44Or2-11 to An73-90Ab10-27Or0.5-1), minor cordierite (XFe = 26%–46%), pigeonite (XFe = 42%–60%), tridymite, cristobalite, and rare mullite. The metapelitic rocks affected by combustion metamorphism were heterogeneous in terms of phase composition and texture. They failed to attain homogeneity due to the high viscosity of anhydrous silicate melts and brevity of the thermal impact. The revealed features of rocks altered by a giant gas fire may serve as a proxy for phase transformation patterns in highly disequilibrium conditions of a thermal shock, far from the formation conditions of ordinary metamorphic rocks.

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Mud Volcanic Fluids of the Kerch–Taman Region: Geochemical Reconstructions and Regional Trends: Communication 2. Genesis of Mud Volcanic Gases and Regional Geochemical Trends

Cited by 3 publications

References 19 publications

Rare Earth Elements in Mud Volcanic Water of the North-Western Caucasus

Rare Earth Elements in Mud Volcanic Water of the North-Western Caucasus

Rare Earth Elements in the Aqueous Phase of Mud Volcanoes of the Kerch-Taman Region

Combustion Metamorphism in Mud Volcanic Events: A Case Study of the 6 May 2000 Fire Eruption of Karabetova Gora Mud Volcano

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