ARTYKUŁY INFORMACYJNE Wulkanizm rejonu Auckland, Nowa Zelandia

Abstract

The volcanism of the Auckland region, New Zealand.A b s t r a c t. New Zealand is situated on the tectonic line between the Indo-Australian and Pacific plates in the subduction zone. Auckland – the New Zealand’s largest city – lies in the Auckland Volcanic Field (AVF) in the North Island. Similarly to the other volcanic fields, the AVF is characterized by volcanism of alkali basalt composition and monogenic formation. The age of volcanism changes from late Miocene to recent times. The AVF comprises about 50 volcanic cones, the activity of which has been dated for the last 25 000 years. The volcanic eruptions displayed a differentiated character – from phreatomagmatic through the Stromboliand Hawaii types to the effusive volcanism.