Hen and Chicken Islands with the surface volcanic andesite in red shading of the Hen. The approximate Taurikura volcanic complex relevant to their formation is in white shading. 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, monogenetic basalts – dark brown, undifferentiated basalts of the Tangihua Complex in Northland Allochthon – light brown, arc basalts – deep orange brown, arc ring basalts – orange brown, rhyolite – violet, dacite – purple, basaltic andesite`– light red, ignimbrite – light violet, and plutonic – gray.
The Hen and Chicken Islands, usually known as the Hen and Chickens, lie to the east of the North Auckland Peninsula off the coast of northern New Zealand. They lie 12 kilometres (7.5 mi) east of Bream Head and 40 kilometres (25 mi) south-east of Whangārei[1] with a total area of 8.44 km2 (3.26 sq mi).[2]
^Cite error: The named reference McLauchlan 1984 was invoked but never defined (see the help page).