Move to the text
Tsukumi city Tourism Association
1-30, Chuomachi, Tsukumi-shi, Oita
TEL. 0972-82-9521
FAX. 0972-82-7106

Ajiro Island

The island where fragment - cosmic dust (uchujin) - of the shooting star 40 million years before 200 million was found in, Ajiro Island (ajirojima).
Do you not think about the ancient times and the endless space far?

A geological feature and stratum of the Ajiro Island

There was the chart seen in Ajiro Island now in "a Triassic period" 200 million years before ... approximately 250 million years ago, and the most big creature mass extinction is the time just after it that there was in the history of the earth.
The rock of the circumference is black and varies from green, purple to red when I cross the way of the sand. This is told to record the history of the earth until the time when environment is restored since most of creatures have become extinct by environment with a little oxygen.
As for the times when stratum was made, it is new that is approaches it more and more in now as I go to the island from a black rock (black shale).
Black rock (black shale)
I was able to do it right after the in history earth's greatest creature mass extinction. The environment where the sea had very little oxygen spread through the global wide area in those days.
Green chart
The difference between purple and color of the red chart reflects the difference of quantities of oxygen in the ocean at the time.
Red chart

Way of the sand appearing only at limited time

At the time of a high tide (flood tide)
At the time of ebb tide (flood tide)

Can you go over to the Ajiro Island today?

Time calendar 2021 version (2021.2.22 update for the inspection) over the Ajiro Island

Time calendar (for the inspection) over the Ajiro Island(2021-02-22・869KB)

The time over the Ajiro Island varies according to a tide level and weather. In Tsukumi city Tourism Association, I made the calendar (for the inspection) to be used as an indication of the time to be able to pass based on data of the Meteorological Agency while actually observing it. Please just judge it by yourself as it is an indication while seeing the real situation.

Back to TOP