РАЗВИТИЯ И ВЕРОЯТНЫЕ НЕФТЕГАЗОНОСНЫЕ ЯРУСЫ РЕГИОНА

In the Middle Southern Tien Shan, the tectonic regime in the Late Proterozoic was generally even more platform-like, and the section of Middle-Upper Riphean sediments was more consistent. Their composition is dominated by carbon-bearing terrigenous strata and quartzites, in the upper part (Upper Riphean) with interlayers and lenses of I algal siliceous limestones of dolomites (3000-4000 m). The latter are enriched in organic substances and can be considered as the most ancient oil source for this region. In the same zone, tillites with interlayers of Vendian carbonate-siliceous rocks (up to 2000-3000 m) are developed.