ALKALINE WATERS OF THE ULTRABASIC MASSIF OF Mt SOLDATSKAYA, KAMCHATKA: CHEMICAL AND ISOTOPIC COMPOSITION, MINERALOGY AND  14 C AGE OF TRAVERTINES

Yu. A. Taran; Таран Ю. А.; D. P. Savelyev; Савельев Д. П.; G. A. Palyanova; Пальянова Г. А.; B. G. Pokrovsky; Покровский Б. Г.

doi:10.31857/S2686739722602897

ALKALINE WATERS OF THE ULTRABASIC MASSIF OF Mt SOLDATSKAYA, KAMCHATKA: CHEMICAL AND ISOTOPIC COMPOSITION, MINERALOGY AND ¹⁴C AGE OF TRAVERTINES

Authors: Taran Y.A.¹, Savelyev D.P.¹, Palyanova G.A.², Pokrovsky B.G.³
Affiliations:
1. Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences
2. Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
3. Geological Institute, Russian Academy of Sciences
Issue: Vol 510, No 1 (2023)
Pages: 30-37
Section: GEOCHEMISTRY
Submitted: 30.01.2025
Published: 01.05.2023
URL: https://rjmseer.com/2686-7397/article/view/649664
DOI: https://doi.org/10.31857/S2686739722602897
EDN: https://elibrary.ru/FFTATX
ID: 649664

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Abstract

For the first time, a detailed description of springs with alkaline waters (pH > 10) found within the ultrabasic massif of the Mt. Soldatskaya on the Kamchatsky Mys Peninsula in Kamchatka is presented. The chemical composition of the springs and the dependence of the ratios and concentrations of some components on pH correspond to the formation of these waters due to modern serpentinization of ultramafic rocks. The most alkaline springs (pH 12.3) contain dissolved hydrogen at a concentration of about 0.6 mmol/l. The behavior of the isotopic composition of carbonate travertines precipitated from these springs (δ¹³C and δ¹⁸O) differs from the known trend for “meteogenic” travertines, associated with serpentinization of ultrabasic rocks in Oman and California. The age of travertines, determined by the radiocarbon method is close to the modern.

Keywords

alkaline waters, Kamchatsky Mys Peninsula, ultramafic rocks, serpentinization, age of travertines

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