Chemical and isotope compositions of thermal and surficial waters from the Chukotka Peninsula

DOI

Twenty three groups of thermomineral springs in the eastern Chukotka with discharge temperature from 2 to 97°C and mineralization from 1.47 to 37.14 g/l are studied and compared with surface freshwater from their localities. dD and d18O values in surface waters vary from -121.4 to -89.5 per mil and from -16.4 to -11.1 per mil, respectively, while respective values in thermomineral waters range from -134.2 to -92.5 per mil and from -17.6 to -10.5 per mil. dD value in surface waters decreases from the east to the west, i.e. toward interior areas of the peninsula. Hydrothermal springs most depleted in deuterium (dD < -120 per mil) are localized in the geodynamically active Kolyuchinskaya-Mechigmen Depression. According to the proposed formation model of Chukotka thermomineral waters their observed chemical and isotopic characteristics could result from mixing (in different proportions) of surface waters with the deep-sourced isotopically light mineralized component (dD = ca. -138 per mil, d18O = ca. -19 per mil, ? = from 9.5 to 14.7 g/l). The latter originates most likely from subpermafrost waters subjected to slight cryogenic metamorphism.

Supplement to: Polyak, Boris G; Dubinina, Elena O; Lavrushin, VYu; Cheshko, Andrey L (2008): Isotopic composition of thermal waters in Chukotka. Translated from Litologiya i Poleznye Iskopaemye, 2008, 5, 480-504, Lithology and Mineral Resources, 43(5), 429-453

Identifier
DOI https://doi.org/10.1594/PANGAEA.786824
Related Identifier https://doi.org/10.1134/S0024490208050027
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.786824
Provenance
Creator Polyak, Boris G; Dubinina, Elena O ORCID logo; Lavrushin, VYu; Cheshko, Andrey L
Publisher PANGAEA
Publication Year 2008
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (-174.620W, 64.350S, -169.820E, 66.720N)