Global Volcanism Program | Image GVP-08942
Stratified phreatomagmatic deposits are exposed along a cliff on the eastern coast of Niijima, with flat-topped Miyazukayama lava dome in the background. The 11-km-long island is comprised of eight rhyolitic lava domes that are clustered in two groups at the northern and southern ends of the island. The Mukaiyama complex at the southern end of the island and Achiyama lava dome at the northern end formed during the 9th century CE.
Photo by Ichio Moriya (Kanazawa University).