| details |
Early Tournaisian |
|
USSR(Urals) |
Byvsheva,T.V. Zonal spore assemblages and stratigraphy of the Turanian-Visean oil and Gas zones of the Volgo-Ural Province. (In: Atlas of Spores and Pollen of Oil and Gas Bearing Deposits of the Russian and Turonskoi Platform. V.V.Menner and T.V.Byvsheva, editors) |
1985 |
| details |
Tournaisian |
|
USSR(Russian Platform) |
Byvsheva,T.V. Spores of the Tournaisian and Visean deposits around the Russian Platform. (In: Atlas of Spores and Pollen of Oil and Gas Bearing Deposits of the Russian and Turonskoi Platform. V.V.Menner and T.V.Byvsheva, editors) |
1985 |
| details |
Cretaceous |
|
USSR(Kazakh SSR) |
Medvedeva,A.M. et al. Direct evidence for vertical oil migration in the eastern Precaspian. |
1993 |
| details |
Cretaceous |
|
USSR(Kazakh SSR) |
Medvedeva,A.M. et al. Direct evidence for vertical oil migration in the eastern Precaspian. |
1993 |