Question

Which one of the following lists most accurately describes oceanic crust?

• A. granitic - density of 3.0 $g/c{m}^3$
• B. basaltic - density of 3.0 $g/c{m}^3$
• C. basaltic - density of 2.6 $g/c{m}^3$
• D. quartz arenites - density of 2.6 g/cm3

Answer 1

Answer: (B)

basaltic - density of 3.0 $g/c{m}^3$

Basalt is dark coloured igneous rock mainly composed of pyroxene mineral. It most commonly forms as an extrusive rock, such as a lava.The oceanic crust consists of a volcanic lava rock called basalt. Oceanic crust is the thin crust underlying the oceans.

Basalt density present is equal to 3.0 g /cm'3