The Beppu-Shimabara
graben (ć„ćșâ泶ćć°æș枯, Beppu-Shimabara ChikĆtai) is a geological formation that runs across the middle of
Kyushu, Japan, from
Beppu Bay in the east to the
Shimabara Peninsula in the west.[1] The area is known for its volcanic,
geothermal, and seismic activity.[2] It encompasses several significant geological features, including a number of active volcanoes. The most prominent is
Mount Aso, an active
volcanic formation consisting of one of the world's largest
calderas and a central crater group with five distinct peaks.[3]Beppu Onsen is located at the eastern end of the graben.
It is located at the overlap of two magma typesâwithin plate type to the north, and island-arc type to the southâthat erupted in the
Quaternary: to the north, the eastern end of the
Eurasian Plate and, to the south, the subduction zone of the
Philippine Sea Plate.[4] It runs about 200 kilometres east to west and its north-south width varies between 20 and 30 kilometres.[5]
References
^Kita, Itsuro; Yamamoto, Masatsugu; Asakawa, Yoshitada; Nakagawa, Masafumi; Taguchi, Sachihiro; Hasegawa, Hidenao (November 2001). "Contemporaneous ascent of within-plate type and island-arc type magmas in the BeppuâShimabara graben system, Kyushu island, Japan". Journal of Volcanology and Geothermal Research. 111 (1â4): 99.
doi:
10.1016/s0377-0273(01)00222-0.
^"Description of Mt. Aso". Information on Restrictions for the Aso Volcano Crater. The Aso Volcano Disaster Prevention Council. 2008. Retrieved 16 April 2016.
^Kita, Itsuro; Yamamoto, Masatsugu; Asakawa, Yoshitada; Nakagawa, Masafumi; Taguchi, Sachihiro; Hasegawa, Hidenao (November 2001). "Contemporaneous ascent of within-plate type and island-arc type magmas in the BeppuâShimabara graben system, Kyushu island, Japan". Journal of Volcanology and Geothermal Research. 111 (1â4): 99.
doi:
10.1016/s0377-0273(01)00222-0.