North Gorda Ridge Segment

Stati Uniti · Frattura eruttiva

North Gorda Ridge Segment

Tipo: Frattura eruttiva
Altitudine: 3000 m (sottomarino)
Ultima eruzione: 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: Frattura eruttiva
Paese: Stati Uniti
Regione: Pacifico orientale / Northeast Pacific Rifts Volcanic Province
Altitudine: 3000 m (sottomarino)
Coordinate: 42.670, -126.780
Ultima eruzione: 1996
Contesto tettonico: Zona di rift / Crosta oceanica (< 15 km)
Forma vulcanica: Gruppo vulcanico
Roccia principale: Basalto / Picrobasalto

Sintesi geologica

Originale in inglese

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.

Estratto dal Global Volcanism Program, Smithsonian Institution · Leggi la sintesi completa sul GVP →