Isotopic-geochemical characteristics of the lost city hydrothermal field

Isotopic-geochemical characteristics of the lost city hydrothermal field

The isotopic (δD, δ^sup 18^O, δ^sup 13^C, and ^sup 87^Sr/^sup 86^Sr) and geochemical characteristics of hydrothermal solutions from the Mid-Atlantic Ridge and the material of brucite-carbonate chimneys at the Lost City hydrothermal field at 30°N, MAR, were examined to assay the role of the major fac...

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Veröffentlicht in:Geochemistry international 2007-11, Vol.45 (11), p.1131-1143
Hauptverfasser: Dubinina, E. O., Chernyshev, I. V., Bortnikov, N. S., Lein, A. Yu, Sagalevich, A. M., Gol’tsman, Yu. V., Bairova, E. D., Mokhov, A. V.
Format: Artikel
Sprache:eng
Schlagworte:
Carbonates
Cities
Geochemistry
Geology
Marine
Rocks
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Zusammenfassung:The isotopic (δD, δ^sup 18^O, δ^sup 13^C, and ^sup 87^Sr/^sup 86^Sr) and geochemical characteristics of hydrothermal solutions from the Mid-Atlantic Ridge and the material of brucite-carbonate chimneys at the Lost City hydrothermal field at 30°N, MAR, were examined to assay the role of the major factors controlling the genesis of the fluid and hydrothermal chimneys of the Lost City field. The values of δD and δ^sup 18^O in fluid samples indicates that solutions at the Lost City field were produced during the serpentinization of basement ultramafic rocks at temperatures higher than 200°C and at relatively low fluid/rock ratios (
ISSN:0016-7029
1556-1968
DOI:10.1134/S0016702907110067