A sequence of pyroclastic surge deposits exposed in a sea cliff on Niijima, in the northern part of the Izu Islands of Japan. These cross-bedded layers were produced during repeated erosion and deposition by multiple pyroclastic surge events. The eruptions accompanied the formation of a lava dome at Mukaijima on the southern part of the island. The flat airfall deposits cap the exposure.

Photo by R.V. Fisher, 1979 (University of California Santa Barbara).

This image is made available under the Creative Commons BY-NC-ND 4.0 license terms.

Galleries: Pyroclastic Flows

Keywords: deposit | field work | ash | stratigraphy | pyroclastic surge | pyroclastic density current (PDC) | erosion

Niijima