| details |
Early Liassic |
|
Poland |
Fijalkowska,A. Spore-pollen investigations of the Lower Liassic deposits in the Skarzysko-Kamienna Ig 1 borehole Profile (The northern Margin of the Swietokrzyskie Mts) |
1989 |
| details |
Pliensbachian |
|
USSR(Kazakh SSR) |
Kruchinina,N.V. et al. Palynostratigraphy of Jurassic deposits. (In: Practical Palynostratigraphy. L.A. Panova et al, editors) |
1990 |
| details |
Early Triassic |
Middle Triassic |
USSR(Kazakh SSR) |
Medvedeva,A.M. et al. Direct evidence for vertical oil migration in the eastern Precaspian. |
1993 |
| details |
Cretaceous |
|
Alaska |
Shearer,J.C. et al. Delineation of distinctive nature of Tertiary coal beds. |
1995 |
| details |
Permian |
Jurassic |
China(Sinkiang Uighur) |
Sun,L. et al. The geological and geochemical significance of oil and gas show the Bortala Basin, Northern Xinjiang. |
1997 |