Question

The crust below the oceans is _____.

made of sand and salt sediment
mostly granite
made of metamorphic rock and granite
basalt and a layer of salt sediment

Answer 1

basalt and a layer of salt sediment

Step-by-step explanation:

Answer 2

basalt and a layer of salt sediment

Step-by-step explanation:

Oceanic crust, extending 5-10 kilometers (3-6 kilometers) beneath the ocean floor, is mostly composed of different types of basalts. Geologists often refer to the rocks of the oceanic crust as “sima.” Sima stands for silicate and magnesium, the most abundant minerals in oceanic crust.