World Map › Cleft Segment
Volcano
Cleft Segment
Fissure vent · -2,140 m · At Sea
Cleft Segment sits on the Juan de Fuca Plate, in a rift zone. 3 eruptions are known since the end of the last ice age, the most recent in 1986.
- Elevation
- -2,140 m
- Type
- Fissure vent
- Tectonic Setting
- Rift zone, oceanic crust
- Dominant Rock
- Basalt / Picro-Basalt
- Plate
- Juan de Fuca Plate
- Country
- At Sea
- Last Eruption
- 1986
- Known Eruptions (Holocene)
- 3
- Max. Explosivity (VEI)
- 0
Eruption Timeline
Each bar is an eruption; its height shows its explosivity (VEI 0 to 8).
Eruption Uncertain Date
Sources : Global Volcanism Program, 2026. Volcanoes of the World (v. 5.4.0; 7 Aug 2026), Smithsonian Institution, doi:10.5479/si.GVP.VOTW5-2026.5.4 (volcano.si.edu) · NOAA NCEI · USGS · Wikidata