This trip was organized by Ikuro Sumita and Atsuko Namiki -- goal was to sample mud from the Niikappu mud volcanoes (which responded many times to earthquakes) and look at domes and deposits from recent eruptions on Hokkaido.
One of the 8 Niikappu mud volcanoes.
Searching for signs of ongoing activity.
Deposits from the mud volcano.
Banded peridotite at Mt Apoi.
Showashinsan, a volcanic dome erupted between 1944 and 1945. Detailed growth of the dome was documented by Masao Mimatsu.
Cookie factory destroyed by the 1990 Usu eruption (notice the holes made by volcanic bombs).
Retaining walls to protect infrastructure from lahars (volcanic mud flows).
Consequences of lahars.
Mt Taramae, an active andesite stratovolcano; the large dome formed in 1739. Most recent eruption was a phreatic eruption in 1982.
The group at the top of Mt Apoi (where you can find spectacular banded peridotite).
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