These mountains do not appear to be of volcanic origin, and scientists are not sure how they form. (scientificamerican.com)
Of volcanic origin, the islands have a unique ecosystems and are very interesting. (catalonia-valencia.com)
Madeira (and Selvagens too) is an archipelago with volcanic origins from a Hot Spot, so is not geographically part of a specific continent, but Madeira belongs and has belonged ethnically, culturally, economically and politically to Europe for 600 years. (global-flirts.net)