The Taconic, Caledonian, and Acadian orogenies were all part of the same major orogenic event related to the closing of the Iapetus Ocean.

Name: The Taconic, Caledonian, and Acadian orogenies were all part of the same major orogenic event related to the closing of the Iapetus Ocean.
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The Taconic, Caledonian, and Acadian orogenies are all related to the closure of the Iapetus Ocean during the Paleozoic era. They are considered part of a larger orogenic event known as the Appalachian orogeny.

The Taconic, Caledonian, and Acadian Orogenies Were All Part of the Same