Geologic Background:
Sarigan volcano forms a 3-km-long, roughly
triangular island. A low truncated cone with a 750-m-wide
summit crater contains a small ash cone. The youngest
eruptions produced two lava domes from vents above the
south crater rim and farther to the south. Lava flows
from each dome reached the coast and extended out to sea,
forming irregular shorelines. The northern flow
overtopped the crater rim on the north and NW sides. The
sparse vegetation on the flows indicates they are of
Holocene age.
Historic Activity:
Recent Activity:
Data Sources:
- Global Volcanism Network (V. 17, No. 6)
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