Abstract
We have described jasper pebbles from gravelites of the Dzhezhim formation on the Zhezhimparma uplift in the Southern Timan. The chip has a zonal structure. The central part is composed of devitrified volcanic glass and is surrounded by the rocks with an oolitic and crustified structure, composed of hematite-pigmented microgranular hexagonal quartz aggregates. We made a conclusion that one of the sources of the detrital material was rocks of timanide (preuralide) orogen, which final collision stage was Late Vendian by the age.
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