African crust reappears in Bulgaria
Deep beneath the Earth's crust of the Balkan Peninsula, two continental plates have been colliding for millions of years. While the African plate slowly subducts beneath the European plate, a piece of this subducted oceanic crust resurfaced around 40 million years ago, far from the actual subduction zone. This phenomenon, known as vertical extrusion, is of great interest to geoscientists… Read more »
