The results obtained in 2002 on the content and changing the concentrations of highly volatile compounds involved in ancient layers of a coastal glacier in the Western Antarctica are discussed. These data confirm the anthropogenic origin of chlorofluorocarbons, their substitutes, and methylchloroform in the Earth atmosphere, whereas the observed CF4, N2O, CO2, C3H6, CH3Cl, C2H5Cl, CH2 = CHCl, CH3Br, CH2Br2, CHBr3, CH3I, CH2 = CHI, C2H5I, COS, CS2, CH3SCH3, and CH3SSCH3 have the natural sources. It is assumed that the main source of halogen- and sulfur-containing compounds in the glacier is the photolysis of dissolved natural organic matter transferred from the ocean to upper firn layers.

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