Exhibit Guide



Orthoquartzite is a kind of sandstone composed almost entirely of quartz particles. It is formed over long periods of time in shallow waters in the coastal regions of stable continental areas. It is notable for the rounded shape of the quartz grains, caused by the erosion of their corners as waves roll them to and fro.

Floor information

Exibit Contents
01The World's Oldest Mineral
02The World's Oldest Rock
03Pillow Lava
05Banded Iron Formations
07Grypania spiralis
09Mino Belt
10Kamiaso Conglomerate
11Japan's Oldest Rock
12CHIME Dating
13The Original Home of Japan's Oldest Rocks
14Hichiso and the Radiolaria
15Geological Model