Question

Which of the following happened first?
a. The mountains of Southern Asia and Europe begin to form.
b. The formation of Pangaea.
c. The Appalachian Mountains begin to form.
d. The North Atlantic Ocean begins to form.

Answer 1

The Appalachian Mountains begin to form.

Explanation:

Out of the four geological events, the one the occurred the first was the formation of the Appalachian Mountains. This mountain range started to form around 480 million years ago. Initially the area was consisted of lowlands, but the geological activity changed, so the once stable and quiet area, started to be geologically highly active.

A subduction zone formed near the location of what are now the Appalachian Mountains, so gradually the terrain started to lift up. At its peak, these mountains were as high as the Alps, being located in the central part of the later emerging super-continent of Pangaea. Once the geological activity calmed down, the erosion started to play a big role, and the Appalachians started to lose on elevation because of all of the sediment that has been stripped of them.

Some characteristics of the Appalachians are:

• They formed in the Ordovician
• They were the longest and highest mountain range in the world during their peak
• They are the oldest existing mountain range in the world
• They are the most dominant physical feature in the eastern part of North America

Learn more about Pangaea https://brainly.com/question/12645875

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