Volcanic risk in Northland

Publisher Website
Google Scholar
Abstract
In Northland, Quaternary volcanism is concentrated in the Bay of Islands and Whangarei Volcanic Districts. Basaltic scoria cones and flows predominate, and there is a rhyolite dome near Kaikohe with nearby warm and hot springs and gas vents. It is from the eastern and southern edges of both volcanic districts, where Holocene basaltic cones and flows are concentrated, that new cones and flows can be expected in the future, at the rate of roughly one in every 1,000 to 2,000 years. Roughly 10 square miles of land is likely to be devastated by each eruption. The likelihood of a hydrothermal eruption is much less than that for basalt, and damage by covering the land with country rock will probably be confined to an area of a few square miles around the crater. The eruptive potential of rhyolitic lava and ash is low, and dacitic volcanism in the Whangarei Volcanic District is considered to be extinct.

This publication has 2 references indexed in Scilit: