| Deep Hole. part of a volcanic arc or micro-continent called Avalonia, which formed south of the equator more than 565 million years ago, off of the coasts of both Africa and South America, when they were joined as part of a larger continent. The New England states were not the only land masses to emerge from the Avalonian arc. In the sketch above, DH marks the approximate location of Deep hole. EW indicates the portion of Avalonia that became southern Ireland, England and Wales, Ib shows Iberia [Spain and Portugal] and Ar Armorica and Bohemia. A portion of the arc is now part of Morocco. Future parts of Nova Scotia, New Brunswick and Newfoundland, as well as most of New England are offshore from Florida [labeled FL on the map]. The portion of the arc that became part of the Carolinas is to the right of Deep hole, offshore of what is now Venezuela, in South America.
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