Canada · Cono piroclastico

Crow Lagoon

Tipo: Cono piroclastico
Altitudine: 335 m
Ultima eruzione: Sconosciuto

A geologist observes the contact between a basaltic Plinian fallout lapilli unit overlying marine clay. This deposit is part of thick beds of basaltic Holocene tephra originating from an unknown Quaternary volcanic center found near Crow Lagoon, north of Prince Rupert near the southern tip of the Alaskan panhandle. Ballistically emplaced bombs imply a nearby source. The tephra beds are located along the south side of the Khutzeymateen Inlet, about 40 km N of Prince Rupert. · Foto: Photo by Jack Souther (Geological Survey of Canada, courtesy of Cathie Hickson).

Tipo: Cono piroclastico
Paese: Canada
Regione: Nord America / Northern Cordilleran Volcanic Province
Altitudine: 335 m
Coordinate: 54.700, -130.230
Ultima eruzione: Sconosciuto
Contesto tettonico: Intraplacca / Crosta continentale (> 25 km)
Forma vulcanica: Minore
Roccia principale: Basalto / Picrobasalto

Sintesi geologica

Thick deposits of Holocene basaltic tephra originating from an unknown volcanic center have been found near Crow Lagoon, ~40 km N of Prince Rupert near the southern tip of the SE Alaskan panhandle. The deposits are located along the S side of the Khutzeymateen Inlet. Ballistically emplaced bombs imply a nearby source, which remains unidentified (Souther and Weiland, 1993).

Sintesi da Wikipedia

Riassunto in inglese

Crow Lagoon is a little-known volcanic center located north of Prince Rupert, British Columbia, Canada. There are beds of thick, basaltic tephra that are of Holocene age.

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