| details |
Devonian |
Carboniferous |
USSR(Saratov) |
Chepikov,K.R. et al. Spores and pollen in oil, gas, condensates and oil-field waters. (In: Sporen and Pollen in Oils and Deposits of Oil and Gas-Bearing Regions of the USSR.) |
1971 |
| details |
Late Carboniferous |
|
USSR(Turkmen SSR) |
Chepikov,K.R. et al. Spores and pollen in oil, gas, condensates and oil-field waters. (In: Sporen and Pollen in Oils and Deposits of Oil and Gas-Bearing Regions of the USSR.) |
1971 |
| details |
Early Carboniferous |
|
USSR(Ukrainian SSR) |
Shkrebta,G.P. et al. On the spores and pollen Compexes in crude oils and oil bearing Rocks |
1971 |
| details |
Late Devonian |
|
USSR |
Bagdasaryan,L.L. Results of micropalaeophytological investigations of oils and stratum waters. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
| details |
Early Cambrian |
|
USSR(Belorussian SSR) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Devonian |
|
USSR(Saratov) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Cretaceous |
|
USSR(Krasnodar Kray) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Permian |
|
USSR(Ukrainian SSR) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Devonian |
|
USSR(Urals) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Middle Paleozoic |
|
USSR(Kazakh SSR) |
Medvedeva,A.M. et al. Direct evidence for vertical oil migration in the eastern Precaspian. |
1993 |