Northeastern Japan Arc
Okhotsk Plate
is the cause of the Northeastern Japan ArcThe Northeastern Japan Arc, also Northeastern Honshū Arc, is an
Hokkaidō. The arc converges in a collision zone with the Sakhalin Island Arc and the Kuril Island Arc in the volcanic Ishikari Mountains of central Hokkaidō. This collision formed the Teshio and Yūbari Mountains
.
The Ōu Mountains form the backbone of the volcanic part of the inner arc that run from Natsudomari Peninsula in Aomori Prefecture south to Mount Nikkō-Shirane in Tochigi and Gunma prefectures. The volcanic front consists of four north to south lines of Quaternary volcanoes and calderas, which extend the length of the range. It also includes the Quaternary volcanoes of southwestern Hokkaido. The Dewa Mountains and the Iide Mountains are non-volcanic uplift ranges that run parallel to the west of the Ōu Mountains.[1]
The outer arc ranges are the
Abukuma Mountains. These mountains are made from pre-tertiary rock. The mountains rose in the Cenozoic and have since been worn smooth by erosion.[2]
References
- JSTOR 25791318.
- ^ "Northeastern Honshu". Introduction to the Landforms and Geology of Japan. 2006. Archived from the original on 9 February 2018. Retrieved 23 June 2020.