Trivia: How were Greece’s islands primarily formed?
Sea level rise
Volcanic eruptions
Tectonic plates
All of the above
The correct answer is All of the above
So why is this answer correct? : Greece’s numerous islands are the result of many geological forces. Tectonic movements during the Miocene Epoch (5 to 23 million years ago) fragmented the land and formed the Cyclade island group. During the following epoch, the Pleistocene, glacial change induced sea level rise, and islands like Santorini were formed by layers of lava and overlapping shield volcanoes. In other words, the Greek islands are a geological wonderland.