Yg. Ryskov et al., FORMATION OF A CARBONATE PROFILE IN DARK CHESTNUT SOIL ACCORDING TO DATA ON CARBON AND OXYGEN ISOTOPIC COMPOSITION, Eurasian soil science, 29(9), 1996, pp. 992-998
Ratios of C-13/C-12 and O-18/O-16 in soil carbonates and humus are exa
mined. It is shown that pedogenic carbonates with isotopic composition
delta(13)C = -10...-11 parts per thousand and delta(18)O = 18-19 part
s per thousand accumulate in soil in disperse and segregated forms. ''
Heavier'' values of delta(13)C and delta(18)O of soil carbonates are e
xplained by admixture of heavy isotopes from Lithogenic components.