Abstract
Abstract Hokkaido, the northern island of Japan, is situated on the North American Plate between the Pacific Plate and the Eurasian Plate; it is set on an island arc subducted by the two latter plates. Hence, Hokkaido has many Quaternary volcanoes. Most of these volcanoes have the andesitic to dacitic composition diagnostic of island arcs. They are remarkably unstable due to steepness of the upper slopes, structural fragility, and post-hydrothermal alteration. Consequently, in Hokkaido, many destructive mass movements occur from the Quaternary volcanoes. They are represented by debris avalanches from stratovolcano or lava dome collapses, hydrologic mass flows due to rainfalls, and slides associated with caldera formation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
