Инд. авторы:	Kikvadze O.E., Lavrushin V.Y., Polyak B.G.
Заглавие:	Chemical geothermometry: application to mud volcanic waters of the Caucasus region
Библ. ссылка:	Kikvadze O.E., Lavrushin V.Y., Polyak B.G. Chemical geothermometry: application to mud volcanic waters of the Caucasus region // Frontiers of Earth Science. - 2020. - ISSN 2095-0195.
Внешние системы:	DOI: 10.1007/s11707-019-0810-8; SCOPUS: 2-s2.0-85085999268; WoS: 000537928400003;
Реферат:	eng: The generation temperatures of gas-water fluids released from mud volcanoes in different provinces of the Caucasian region have been constrained using Mg/Li (TMg/Li) chemical geothermometry. Mud volcanic fluids in the Taman Peninsula (Kerch-Taman mud volcanic province) were generated at temperatures (TMg/Li) from 41°C to 137°C. The depths of the respective mud reservoirs estimated from TMg/Li values and local geothermal gradient are in a range of 1.0 to 3.4 km which spans the Maykop Formation of marine shale. For the South Caspian province, the TMg/Li values of waters vary from 18°C to 137°C and the respective root depths HMg/Li of mud volcanoes range from ∼ 0.85 to 6.5 km. The obtained TMg/Li values for the analyzed mud volcanic waters from Caucasian provinces are in positive correlation with HCO3 − contents and water oxygen isotope compositions (δ18OH2O and Δδ18OH2O) and in high negative correlation with Cl−. The increase of TMg/Li toward the Greater Caucasus Range, as well as the lateral TMg/Li patterns in the Taman and South Caspian mud volcanic provinces, support the idea that mud volcanic fluids generate at temperatures increasing progressively toward the Alpine orogenic belt. © 2020, Higher Education Press.
Ключевые слова:	fluid; stable isotopes; Caucasus region; chemical geothermometry; mud volcano;
Издано:	2020