Hot Spots
They are, yes.
Rift zone
Banks Peninsula is a complex of extinct shield volcanoes resulting from intraplate or "hotspot" volcanism 8-11 million years ago, built mainly from alkali-basalt lavas. In some shield volcano eruptions, basaltic lava pours out of a long fissure instead of a central vent. This appears to have occured in the case of the craters that eventually eroded to form the Lyttleton and Akaroa Harbours. The Lyttleton volcano formed first (11-10 million years ago) and the Akaroa volcano later (9-8 million years ago). The Banks Peninsula complex formed at the margin of the area affected by compressional tectonics on the Pacific/Australian Plate boundary. Eruptions on the Peninsula continued until about 6 million years ago, which coincides roughly with the epoch at which compressional tectonics became established in the Canterbury and Otago regions. Geologists therefore speculate that the onset of compressional tectonics (of the sort dramatically witnessed in Canterbury in 2010/2011) turned off the alkaline intraplate volcanism of southern New Zealand; i.e., it is the reason that these volcanos have been extinct for millions of years. [Source: "Intraplate volcanism in eastern Australia and New Zealand" By R. Wally Johnson, Jan Knutson, Stuart Ross Taylor, Australian Academy of Science (Cambridge University Press, 1989)]
Recent expeditions under the arctic ice reveal active volcanism.
Intraplate volcanism.
Hot Spots
figure it out urself
Yes, because it is not a plate boundary...and Wikipedia said it is. Jim
They are, yes.
Neil M. Ribe has written: 'Towards a dynamic model of intraplate volcanism'
An intraplate volcano (or hotspot volcano) is one that is not located on a plate boundary. The Big Island of Hawaii is one example located within the Pacific Plate. In addition, Yellowstone National Park is located over a continental hotspot in the North American Plate. For a longer discussion of plate boundaries and their respective volcanoes, see the Plate Tectonics section. For more information regarding intraplate volcanoes see Hotspots.
The Hawiian islands are formed by shield volcanoes.
Rift zone
intraplate setting
A volcano. See the excellent book "Krakatoa" by Simon Winchester.
A volcano. See the excellent book "Krakatoa" by Simon Winchester.