Chibanian (geologic age)
A geological age spanning roughly 774,000 to 129,000 years ago, named after Chiba Prefecture, Japan, where the Global Boundary Stratotype Section and Point (GSSP) is located. Used in academic and scientific contexts.
The Chibanian is a geological age named after Chiba Prefecture.
This stratum is the international type locality marking the beginning of the Chibanian.