Logo link to homepage

Global Volcanism Program | Image GVP-12561

Usu formed along the SW boundary of Toya caldera and is shown in this September 2019 Planet Labs satellite (N is at the top). There is a 2-km-wide crater at the top, and within that crater and on the flanks are a scoria cone, three lava domes, and more than ten cryptodomes. Flank collapse possibly occurred around 8-7 ka, emplacing a debris avalanche deposit to the south. Satellite image courtesy of Planet Labs, 2019.

Usu formed along the SW boundary of Toya caldera and is shown in this September 2019 Planet Labs satellite (N is at the top). There is a 2-km-wide crater at the top, and within that crater and on the flanks are a scoria cone, three lava domes, and more than ten cryptodomes. Flank collapse possibly occurred around 8-7 ka, emplacing a debris avalanche deposit to the south.

Satellite image courtesy of Planet Labs, 2019.

Keywords: lava dome


Toya