Tarahi andesite (red shading), and nearly basaltic scoria and lava fields (brown) of the
Kaikohe-Bay of Islands volcanic field in centre of map. To its immediate south east is
Putahi rhyolite (violet) and to its north
Te Ahuahu andesite (red) separated by the basalt (brown) of Haruru
pā. Clicking on the map enlarges it, and enables panning and mouseover of volcanic feature name/wikilink and ages before present. The key to the other volcanics that are shown with panning is
basalt - brown, monogenic basalts - dark brown, undifferentiated basalts of the Tangihua Complex in Northland Allochthon - light brown, arc basalts - deep orange brown, arc ring basalts -orange brown,
dacite - purple),
andesite - red , basaltic andesite`- light red),
rhyolite - violet ,
ignimbrite (lighter shades of violet), and
plutonic - gray.