| details |
Middle Pleistocene |
Holocene |
Alaska(Gulf) |
Marret,F. et al. Middle Pleistocene to Holocene palynostratigraphy of Ocean Drilling Program Site 887 in the Gulf of Alaska, northeastern North Pacific. |
2001 |
| details |
Middle Eocene |
Pleistocene |
Alaska |
Olson,D.L. et al. Biostratigraphy. (In: Geological and Operational Summary Norton Sound Cost No.2 Well Norton Sound, Alaska. R.F.Turner, editor) |
1987 |
| details |
Early Miocene |
Middle Miocene |
Alaska |
Leopold,E.B. et al. A long pollen sequence of Neogene age, Alaska range. (In: Tertiary Quaternary Boundaries. T.A. Ager et al, editors) |
1994 |
| details |
Oligocene |
Pliocene |
Alaska |
Merritt,R.D. Coal geology and resources of the Nenana Basin, Alaska. |
1986 |
| details |
Oligocene |
Pliocene |
Alaska |
Merritt,R.D. Coal atlas of the Nenana Basin, Alaska. |
1985 |