Small shallow-rooted Kerch mud volcanoes (Tobichek, Eny-Kale, Soldatsko-Slobodsky)
Crimea, Kerch Peninsula (Kerch-Taman mud volcano province), Crimée
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Mud volcanoes of the Kerch Peninsula (Caucasus collision zone, northern margin of the orogenic prism), draining waters generated at 1 to 3.5 km in the Maykop clays (Oligocene-Miocene); sampled in 2017 (Lin et al., 2026, data of Sokol et al., 2019 and Lavrushin et al., 2025). Large deep-rooted volcanoes: waters freshened by dehydration water from the smectite-illite transition (52 to 74 %), B-rich, low δ11B; small shallow-rooted volcanoes: mixing with seawater-like pore water and strong surface overprinting. Coordinates not published (map only). Waters with 19 to 162 mg/L B, 52 to 76 °C; Tobichek close to seawater (+39.9 ‰), Soldatsko-Slobodsky very heavy (+54.7 ‰), Eny-Kale intermediate (+18.6 ‰): exchangeable B(OH)3 desorbed from shallow clays, mixing with seawater and surface overprinting.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 37.7 ± 18.1 ‰ | 18.6 / 54.7 ‰ | 3 | water (dissolved boron) Mean and standard deviation recalculated from 3 analyses, +18.6 to +54.7 (Tobichek 205-17 +39.9; Eny-Kale 208-1-17 +18.6; Soldatsko-Slobodsky SS-17-3-4 +54.7). | Lin et al. (2026), Application of boron isotopes to the understanding of fluid-rock inter… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 1.8 ± 3.3 ‰ | −1 / 5.5 ‰ | 3 | water (H2O) Mean and standard deviation recalculated from 3 analyses, -1.0 to +5.5 (Tobichek +1.0; Eny-Kale -1.0; Soldatsko-Slobodsky +5.5). | Lin et al. (2026), Application of boron isotopes to the understanding of fluid-rock inter… |
δD in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −32.8 ± 10.2 ‰ | −44.4 / −25.3 ‰ | 3 | water (H2O) Mean and standard deviation recalculated from 3 analyses, -44.4 to -25.3 (Tobichek -25.3; Eny-Kale -44.4; Soldatsko-Slobodsky -28.7). | Lin et al. (2026), Application of boron isotopes to the understanding of fluid-rock inter… |
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.2 ± 4.4 ‰ | 13.1 / 21 ‰ | 3 | dissolved inorganic carbon Mean and standard deviation recalculated from 3 analyses, +13.1 to +21.0 (Tobichek +21.0; Eny-Kale +13.1; Soldatsko-Slobodsky +20.4). | Lin et al. (2026), Application of boron isotopes to the understanding of fluid-rock inter… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Small shallow-rooted Kerch mud volcanoes (Tobichek, Eny-Kale, Soldatsko-Slobodsky), isotope signatures. https://www.isofind.tech/isotopes/en/sites/petits-volcans-de-boue-peu-profonds-de-kertch-tobichek-eny-kale-soldatsko-slobodsky/ (accessed 2026-10-19).
@misc{isofind2026smallshallowrootedkerchmudvol,
title = {Small shallow-rooted Kerch mud volcanoes (Tobichek, Eny-Kale, Soldatsko-Slobodsky), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/petits-volcans-de-boue-peu-profonds-de-kertch-tobichek-eny-kale-soldatsko-slobodsky/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19