Escanaba Segment

United States · Fissure vent

Escanaba Segment

Type: Fissure vent
Elevation: 1700m (submarine)
Last eruption: -2260

A NOAA/PMEL map shows the setting of the Escanaba Segment at the southern end of the Gorda Ridge west of the coast of northern California. The linear N-S-trending segment is the southernmost of the five segments of the Gorda Ridge, and lies immediately north of the Mendocino Fracture Zone. The axial crest of the 130-km-long segment, also known as the Escanaba Trough, is about 3-5 km wide at the northern end and widens to 18 km in the south near the junction with the Mendocino Fracture Zone. · Photo: Courtesy of NOAA NeMo Observatory.

Type: Fissure vent
Country: United States
Region: Eastern Pacific / Northeast Pacific Rifts Volcanic Province
Elevation: 1700m (submarine)
Coordinates: 40.980, -127.500
Last eruption: -2260
Tectonic setting: Rift zone / Oceanic crust (< 15 km)
Landform: Cluster
Major rock type: Basalt / Picro-basalt

Geological summary

The linear, N-S-trending Escanaba Segment, the southernmost of the Gorda Ridge, lies immediately north of the Mendocino Fracture Zone off the coast of northern California.

Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →