Triassic
General info
Belongs to
Type chronostratigraphy
Rank System
Scope global
Status formal standard
Author Friedrich August von Alberti
Year 1834
Etymon Three distinct rock layers (tri meaning "three") that are found throughout Southern Germany
Age top (Ma) 201.4
Age base (Ma) 251.902
Index
T
Date changed 2022-11-04
StratigraphyIndexIndex add'lTypeRankScopeBelongs toAge base (Ma)Age top (Ma)Age
Lower Triassic
T1
chronostratigraphy
Series
global
Triassic 251.902 247.2
Middle Triassic
T2
chronostratigraphy
Series
global
Triassic 247.2 237
Upper Triassic
T3
chronostratigraphy
Series
global
Triassic 237 201.4