The Carbon and Oxygen Isotope Composition of Secondary Carbonates in Volcanites of the pre-Jurassic Complex of the West Siberian Plate

• Published in: Moscow University geology bulletin Vol. 74; no. 6; pp. 567 - 572
• Main Authors: Krasnova, A. V., Rostovtseva, Yu. V., Gavrilov, A. E.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-11-2019; Springer Nature B.V
• Subjects: Calcite; Carbonates; Chemical composition; Earth and Environmental Science; Earth Sciences; Geology; Hydrothermal solutions; Isotopes; Jurassic; Low temperature; Magma; Oxygen isotopes; Siderite; pre-Jurassic complex; secondary carbonates; isotope analysis; West Siberia; effusives
• ISSN: 0145-8752; 1934-8436
• DOI: 10.3103/S014587521906005X

The carbon and oxygen isotope composition of secondary carbonates from acidic effusives in the top of the pre-Jurassic complex of the West Siberian plate (Tomsk Region) was studied. The siderite values of δ
13
С (VPDB) and δ
18
О (VSMOW) vary from –6.6 to –2.4‰ and from 7.8 to 12.3‰, while the calcite values vary from –8.9 to –8.4‰ and from 2.5 to 3.7‰, respectively. The light oxygen isotope composition indicates that the carbonates were from medium- and low-temperature hydrothermal solutions.