High School

Which event marked the creation of the supercontinent Pangaea?

A. The Appalachian Mountains ceased uplifting and erosion began.
B. The Iapetus Ocean closed during the Alleghanian Orogeny.
C. Avalonia accreted onto North America during the Acadian Orogeny.
D. Africa pulled away from North America, creating the Atlantic Ocean.
E. The Taconic volcanic island arc accreted onto North America during the Taconic Orogeny.

Answer :

Final answer:

Africa pulling away from North America created the Atlantic Ocean and marked the creation of the supercontinent Pangaea.

Explanation:

The event that marked the creation of the supercontinent Pangaea was Africa pulling away from North America, creating the Atlantic Ocean. This process, known as continental rifting, resulted in the separation of the continents and the formation of the Atlantic Ocean. It occurred about 200 million years ago, leading to the breakup of Pangaea and the subsequent drift of the continents into their current positions.

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