Today the island is managed by the Department of Conservation and is a public reserve and popular tourist destination. It erupted out of the sea and has been the site of at least two eruptions, the last occurring about years ago. The lack of soil, very little water and high temperatures has created a distinctive yet developing plant population. Colonisation by lichen, moss and algae has been followed by the establishment of over species of native trees and plants including ferns and orchids and the largest pohutukawa forest in New Zealand.
New Zealand. Sequential eruption of alkaline and sub-alkaline magmas from a small monogenetic volcano in the Auckland Volcanic Field, New Zealand. Journal of Volcanology and Geothermal Research , Geophysical evidence for temporal and structural relationships within the monogenetic basalt volcanoes of the Auckland volcanic field, northern New Zealand.
Shane P, Hoverd J, Distal record of multi-sourced tephra in Onepoto Basin, Auckland, New Zealand: implications for volcanic chronology, frequency and hazards. Volcanic hazards at the Auckland Volcanic Field. Elliptical boundary of an intraplate volcanic field, Auckland, New Zealand. The maps shown below have been scanned from the GVP map archives and include the volcano on this page.
Clicking on the small images will load the full dpi map. Very small-scale maps such as world maps are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email. Auckland Volcanic Field. References The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.
Eruptive History There is data available for 2 Holocene eruptive periods. The field contains more than 50 maars, tuff rings, and scoria cones that were formed during eruptions over the past , years.
Only one volcano was formed during the Holocene. About years ago, two phases of eruptive activity formed a low shield volcano capped by a scoria cone at Rangitoto. Photo by Jim Cole University of Canterbury. The volcano erupted at least twice, about and years ago, and is capped by a scoria cone containing a deep crater. Motukorea also known as Brown's Island in Waitemata Harbour, New Zealand, is composed of a remnant tuff ring right side , scoria cones center , and lava flows that form the flat peninsula in the foreground.
The low-angle slopes of lava flows from Rangitoto are visible to the north in the background. Photo by B. Thompson published in Green and Short, This view looking SW from the summit of Rangitoto volcano shows cones on a peninsula extending into Waitemata Harbor with the city center behind it. North Head left and Mount Victoria right on the peninsula are two of the more than 50 maars, tuff rings, and scoria cones that have formed in the past , years.
Global Ash Impact Posters. Eruption: What to do. New Zealand Volcanoes. Taupo Volcano. Mayor Island. Auckland Volcanic Field. Brothers Volcano. Raoul Island. Volcanic Hazards. Monitoring Our Volcanoes.
Volcanoes at a Plate Boundary. Lesson Plans.
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