CARBON ISOTOPE COMPOSITIONOF THE HESEN AND CHULAKTAU FORMATIONS (Hövsgöl and Karatau phosphorite basins)
A.V. Il'in, Yu.A. Kiperman*, and A.A. Poyarel'**
Institute of Lithosphere of Marginal and Inner Seas, Russian Academy of Sciences,22 Staromonetny per., Moscow, 119180, Russia
* All-Russian Research Institute of Economics of Mineral Raw Materials and Interior Use,38 ul. Tret'ya Magistral'naya, Moscow, 123007, Russia
** Kazfosfat Joint-Stock Company, 126 ul. Abaya, Toraz, 484039, Kazakhstan
Keywords: Carbon isotope anomaly, phosphorite, dolomite
Pages: 1297-1303
Subsection: PETROLOGY, GEOCHEMISTRY AND MINERALOGY
Abstract
The values of  were measured in phosphorites and dolomites composing productive formations of the Hövsgöl and Karatau phosphorite basins (Hesen and Chulaktau Formations, respectively) and in dolomites overlying these formations (Hövsgöl and Tamdy series, respectively). The plots of both phosphorites and dolomites from the Hesen Formation demonstrate a clearly expressed negative anomaly with of up to -7 |
