"Chibanian" Stratum to Be Natural Monument in Japan

Society Politics

Tokyo, June 15 (Jiji Press)--The Cultural Affairs Council recommended on Friday that a stratum in Chiba Prefecture, eastern Japan, be designated as a natural monument, citing its significance as a representing observation point for the beginning of a geological period that could be called "Chibanian."

The stratum along the Yoro River in the city of Ichihara shows traces of a reversal in the Earth's magnetic field. Analysis of volcanic ash indicates that it was formed 770,000 years ago.

The advisory body for the culture minister pointed out that the layer, not far from Tokyo, is easy to observe and extremely valuable academically.

The designation will be made as proposed shortly.

Last year, a Japanese research team applied to the International Union of Geological Sciences for recognition of the stratum as a point representing a shift in geological time.

[Copyright The Jiji Press, Ltd.]

Jiji Press