Most of the basalt and gabbro on the ocean floor is created at mid oceanic ridges, which are also ____.
A) divergent plate boundaries
B) ocean-ocean convergent plate boundaries
C) transform plate boundaries
D) ocean-continent plate boundaries
E) intraplate igneous areas

Question

Quizplus · Accepted Answer

Mid-oceanic ridges are divergent plate boundaries where two plates move away from each other, leading to the creation of new oceanic crust through volcanic activity. Basalt and gabbro are igneous rocks commonly found in the ocean floor, and they are produced by the solidification of molten material (magma) that rises up from the mantle and cools down at the mid-oceanic ridges. Therefore, the correct choice is A.

Most of the Basalt and Gabbro on the Ocean Floor