Exhibit Guide



Chert is a sedimentary rock composed of very fine quartz that comes in a variety of colors: black, red, green, or white. It has a high silica content, which makes it very hard and highly valued for stone tools. Bedded chert is composed of layers of chert, several cm thick, alternating with layers of mudstone 1 to 2mm thick.

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