North Gorda Ridge Segment

Estados Unidos · Fisura volcánica

North Gorda Ridge Segment

Tipo: Fisura volcánica
Altitud: 3000 m (submarino)
Última erupción: 1996

This lava flow was erupted in 1996 along the North Gorda Ridge, the northernmost of five segments of the Gorda Ridge located immediately south of the Blanco Transform Fault, which offsets the Gorda and Juan de Fuca spreading ridges. Submarine cameras revealed new lava flows about 100-200 m wide along a fissure that was at least 3.5 km long. The 65-km-long North Gorda Ridge segment is located about 200 km W of the southern Oregon coast and has an hourglass shape in plan view, with a shallower narrow axial valley at the center. · Foto: Image courtesy of National Oceanic and Atmospheric Administration, 1996 (http://www.pmel.noaa.gov/vents/home.html).

Tipo: Fisura volcánica
País: Estados Unidos
Región: Pacífico Oriental / Northeast Pacific Rifts Volcanic Province
Altitud: 3000 m (submarino)
Coordenadas: 42.670, -126.780
Última erupción: 1996
Contexto tectónico: Zona de rift / Corteza oceánica (< 15 km)
Forma volcánica: Grupo volcánico
Roca principal: Basalto / Picrobasalto

Resumen geológico

Original en inglés

The northernmost of five segments of the Gorda Ridge lies immediately south of the Blanco Transform Fault that offsets the Gorda and Juan de Fuca oceanic spreading ridges.

Extracto del Global Volcanism Program, Smithsonian Institution · Leer el resumen completo en el GVP →