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.