1. SW3 S1180121 Takahiro Yoshita

2. Circum-Pacific volcanic zone The circum-Pacific volcanic zone is a volcanic zone where surroundings in the Pacific Ocean are surrounded, and the generic name of the volcano islands and the volcanic cluster. It is called an alias Pacific rim make mountain belt.

3. Two large orogenic zones of the world The circum-Pacific volcanic zone is called two large orogenic zones of the world with Alpine-Himalayan belt.

4. Formation of volcanic zone The oceanic plate in the Pacific Ocean in which it centers on Pacific Plate is formed, and it sinks under a continental plate and an oceanic plate and the volcano islands and the volcanic cluster of the circumference are formed by crowding.

5. Feature of volcanic zone Because the volcanic zone is a thing including sinking of the plate, the seismic activity besides the volcanic activity is also active.

6. Formation time It is thought that it was formed after the mesozoic when the [hirahiroshi] plate was able to be done. The Japanese Islands, Indonesia, the Philippines, and a volcano islands aleutian etc. , Andes, and Rockies, etc. are included.

7. Earthquake Both circum-Pacific volcanic zones are said two large orogenic zones of the world, and are the frequent occurrence zones of the earthquake.

8. Other features The volcano is Alpine-Himalayan belt.. few while there are a lot of activities to accompany peel volcano and there are a lot of folds the circum-Pacific volcanic zone.