Abstract

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 δ¹³С (VPDB) and δ¹⁸О (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.

中文翻译：

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西西伯利亚板前侏罗统复杂火山岩中次生碳酸盐的碳氧同位素组成

摘要

研究了西西伯利亚板块（托木斯克州）侏罗纪前期复合体顶部酸性喷出物的二次碳酸盐的碳和氧同位素组成。的菱铁矿值δ ¹³ С（VPDB）和δ ¹⁸ О（VSMOW）改变从-6.6到-2.4‰和7.8至12.3‰，而方解石值变化从-8.9到-8.4‰和2.5至3.7‰ ， 分别。轻氧同位素组成表明碳酸盐来自中低温热液溶液。