Cobb Segment

Cobb Segment (Canada) is a fissure vent. It rises to −2,100 m above sea level. The GVP records 1 confirmed eruption in the Holocene, the latest in 1,180 BCE.

Elevation: −2,100 m
Last eruption: 1,180 BCE
Confirmed eruptions: 1
Max VEI: —
Country: Canada
Location: 46.88° N, 129.33° W
Region (GVP): Northeast Pacific Rifts Volcanic Province
GVP type: Fissure vent(s)
Tectonic setting: Rift zone / Oceanic crust (< 15 km)
Main rock type: Basalt / Picro-Basalt

Show on the timeline GVP entry ↗

Other volcanoes and strong earthquakes within 300 km

Eruption history

VEI – Volcanic Explosivity Index: 0 = lava outpouring, 4 = like Eyjafjallajökull 2010, 6 = like Pinatubo 1991, 7 = like Tambora 1815. The scale is logarithmic – each step is about 10 times more material.

Start	End	VEI	Vent and dating
c. 1,180 BCE	—	?	Isotopic: Uranium-series

Data: Global Volcanism Program, Smithsonian Institution (#331011)