クロー・ラグーン山

Crow Lagoon

火砕丘 · Canada · 335m

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. · 写真: Photo by Jack Souther (Geological Survey of Canada, courtesy of Cathie Hickson).

タイプ: 火砕丘
国: Canada
地域: North America Volcanic Regions / Northern Cordilleran Volcanic Province
標高: 335m
座標: 54.700, -130.230
最終噴火: 不明
テクトニクス環境: Intraplate / Continental crust (> 25 km)
火山地形: Minor
主要岩石: Basalt / Picro-Basalt

地質学的概要

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).

Wikipedia の要約

英語版の要約

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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