Figure 2. Variations of Sr isotopic composition in the Riphean basin of the Yenisei
Ridge.
1-3 - carbonate rocks: 1 - least altered, 2 - moderately altered, and 3 - altered.
Formations: Pg = Pogoryuiski, Kr = Kartochki, Al = Aladinsky, Krg = Krasnogorsky,
Dg = Dzhursky, Sn = Shuntarsky, Sk = Sery Klyuch, Dd = Dadyktinsky, LA = Lower
Angara, Ds = Dashkinsky. Other symbols, as in Figure 1.