Logo link to homepage

Global Volcanism Program | Image GVP-02190

Ko-Usu lava dome, seen here from the S, is mantled by a thick blanket of ejecta from the 1977 eruption. Ko-Usu, one of several lava domes in the summit crater of Usu volcano, formed after a major explosive eruption either in 1663 or 1769 CE. Yoteizan volcano is on the left horizon. Photo by Norm Banks, 1981 (U.S. Geological Survey).

Ko-Usu lava dome, seen here from the S, is mantled by a thick blanket of ejecta from the 1977 eruption. Ko-Usu, one of several lava domes in the summit crater of Usu volcano, formed after a major explosive eruption either in 1663 or 1769 CE. Yoteizan volcano is on the left horizon.

Photo by Norm Banks, 1981 (U.S. Geological Survey).

Keywords: environmental impact | lava dome | deposit | tephra | ashfall | plume


Toya