Question

Oceanic crust ____________.A. is thicker and denser than continental crust.B. comprises broad continental shelves along active continental margins and much narrower shelves along passive margins.C. is composed of gabbro and basalt overlain by sediment.D. gets younger the farther you go from the ridge axis.

Answer 1

C. is composed of gabbro and basalt overlain by sediment.

Step-by-step explanation:

The oceanic crust, which extends 5 to 10 kilometers below the ocean floor, is mainly composed of different types of basalts. Below the sediment layer, there is a rocky unit composed mainly of basaltic lavas that contain abundant pillow-shaped structures called padded basalts. The gabbros are in the deepest interior part of the crust.