Organic matter of Visean coal-bearing deposits of the northern Pre-Uralian foredeep

The composition of organic matter from Vizean Carboniferous sediments of the Pechora basin have been discussed in the article. It is determined that coals from Edzhyd-Kyrtinskoe deposit are humic with the bimodal distribution of n-alkanes in the aliphatic fraction of bitumoid, and the coals from Vuktyl area are mostly dominated by sapropelic medium weght n-alkanes.