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An Iceland in the South Atlantic ?

The Rio Grande Rise Massif and the Valdivia Bank have been interpreted as the two halves of an originally continuous hot-spot-related plateau formed on the Mid Atlantic Ridge. Is Iceland an example of what that plateau might have been like, geologically at least, at the time of its formation?

The Aragonauts

Most of what has been written about Jacques Arago concentrates on the voyage of the Uranie, and only to a lesser extent on his literary career in the 1830s. Mentions of his second major journey, which began with a plan to join the California gold rush, are far less common.