North ForkNorthern California

#238, project 1, show in map.

Age (Ma)
0.010.00
Cenozoic
Quaternary
Holocene
Pleistocene
Late Pleistocene
Unnamed
66.0 Ma
100
Cenozoic
Paleogene
Paleocene
Danian
Mesozoic
Cretaceous
Late Cretaceous
Maastrichtian
Campanian
Santonian
Coniacian
Turonian
Cenomanian
Early Cretaceous
Albian
Aptian
Barremian
Hauterivian
Great Valley Sequence
32.7 Ma
250200
Mesozoic
Jurassic
Middle Jurassic
Callovian
Bathonian
Bajocian
Aalenian
Early Jurassic
Toarcian
Pliensbachian
Sinemurian
Hettangian
Triassic
Late Triassic
Rhaetian
Norian
Carnian
Middle Triassic
Ladinian
Anisian
Early Triassic
Olenekian
Induan
Paleozoic
Permian
Lopingian
Changhsingian
Wuchiapingian
Guadalupian
Capitanian
Wordian
Roadian
Cisuralian
Kungurian
Artinskian
Sakmarian
Asselian
Carboniferous
Pennsylvanian
Gzhelian
Unnamed
Unnamed
Plagio-granite Formation