Lithology and Mineral Resources

, Volume 38, Issue 2, pp 120–153 | Cite as

Formation of Mud-Volcanic Fluids in Taman (Russia) and Kakhetia (Georgia): Evidence from Boron Isotopes

  • V. Yu. Lavrushin
  • A. Kopf
  • A. Deyhle
  • M. I. Stepanets


Temperatures of the formation of mud-volcanic waters are determined based on concentrations of some temperature-dependent components (Na–Li, Mg–Li). Estimates obtained for the Taman and Kakhetia regions are similar and range from ∼ 45 to ∼170°С, which correspond to depths of ∼1–4.5 km. The calculated temperatures correlate with the chemical (Li, Rb, Cs, Sr, Ba, B, I, and HCO3) composition of water and δ13С (СО2) and δ13С (CH4) values in spontaneous gases. The isotope values indicate that mechanisms of the formation of δ13С-rich gases, i.e., gases with high δ13С values (up to +16.0‰ in СО2 and –23.4‰ in CH4) in mud-volcanic systems of Taman and Kakhetia are governed by fluid-generation temperatures rather than the supply of abyssal gases. The δ11В value was determined for the first time in mud-volcanic products of the Caucasus region. This value ranges from +22.5 to +39.4‰ in the volcanic water of Georgia, from –1.2 to +7.4‰ in the clayey pulp of Georgia, and from –7.6 to +13.2‰ in the clayey pulp of Taman. It is shown that the δ11В value in clay correlates with the fluid-generation temperature and δ11В correlates with δ13С in carbon-bearing gases. These correlations probably testify to the formation of different phases of mud-volcanic emanations in a single geochemical system and suggest the crucial role of temperature in the development of isotope-geochemical features.


Clay Russia Boron Crucial Role Sedimentology 
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Copyright information

© MAIK “Nauka/Interperiodica” 2003

Authors and Affiliations

  • V. Yu. Lavrushin
    • 1
  • A. Kopf
    • 2
  • A. Deyhle
    • 2
  • M. I. Stepanets
    • 1
  1. 1.Geological Institute (GIN)Russian Academy of SciencesMoscowRussia
  2. 2.Research Center for Marine Geosciences (GEOMAR), Christian-AlbrechtsUniversity of KielKielGermany

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