Open AccessHydrothermal fields of the Piip submarine volcano, Komandorsky Back-Arc Basin: Chemistry and origin of vent mineralization and bubbling gas
Author(s) -
Pavel V. Torokhov,
Yuri Taran
Publication year - 1994
Publication title -
bulletin of the geological society of denmark
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.674
H-Index - 28
eISSN - 2245-7070
pISSN - 0011-6297
DOI - 10.37570/bgsd-1995-41-06
Subject(s) - hydrothermal circulation , calcite , geology , geochemistry , anhydrite , mineralization (soil science) , sedimentary rock , sulfide , mineralogy , volcano , hydrothermal vent , gypsum , chemistry , seismology , paleontology , organic chemistry , soil science , soil water
Active thermal vents of the Piip submarine volcano were studied in 1990 from aboard submersibles MIR 1 and 2. Samples of free gas and hydrothermal deposits were collected in the areas of thermal fluid discharge. Mineralogical, isotopic and microprobe studies of samples have shown, as the hydrothermal system cools, the high-temperature anhydrite association displayed at the surface is substituted by calcite-barite and later by calcite-barite-sulfide assemblages. The chemical and isotopic composition of gas and carbonates indicates the significant role of hydrocarbons from the sedimentary layers which, during the low-temperature stage, stimulate the processes of bacterial sulphate reduction. The evolution of a simular hydrothermal system is traced in the Great Caucasus barite deposits.