answersLogoWhite

0

What caused the usu japan volcano?

User Avatar

Anonymous

14y ago
Updated: 8/19/2019

Usu is a truncated stratovolcano with late-stage dacitic domes. Usu was formed by eruptions of basaltic and andesitic magma (Usu somma lava). Then, 7,000 to 8,000 years ago, a violent explosion and a large debris avalanche formed a somma that is now largely filled by dacitic domes. Viscous dacitic magma has on occasion upheaved the land surface by more the 200 meters directly above a cryptodome

User Avatar

Wiki User

14y ago

What else can I help you with?