Анотація:
The paper deals with the isotope-geochemical indices between the oils of different fields of the Carpathian Foredeep on the territory of Poland and Ukraine. Substantial distinctions by the indices δ¹³C, δD, and δ^34S are established between the oils of autochthonous and allochthonous complexes. In the light of isotopic criteria, the conclusion about a powerful practically non-realized hydrocarbon potential of the Ukrainian Carpathian autochthone is made.