BackgroundA group of pyroclastic cones of Iki Island NW of Kyushu was active from the Pliocene to about 600,000 years ago (Nakano et al., 2001). However, volcanic activity in the Iki Islands began as much as 15 Ma as the Japan Sea back-arc basin began to open, producing mostly basaltic lavas (Kimura et al., 2005). The Iki volcanic group is part of a Quaternary alkaline province in northwestern Kyushu; the volcanic products range from basaltic to rhyolitic (Aoki and Oji, 1966).
Source: Smithsonian / GVP volcano information
See also: Sentinel hub | Landsat 8