Question

The Earth's crust is principally composed of _______. A. Granitic and sedimentary minerals b. Granitic and basaltic minerals c. Basaltic and sedimentary minerals d. None of the above.

Answer 1

Answer:

Option B is correct.

Explanation:

One of the most common rock forms is granite that is found in abundance in the earth's crust. The common minerals in the granite that are found in earth’s crust are – quartz, mica, hornblende and fledspar. Basalt is a volcanic rock that forms after the cooling of lava. After weathering, the basalt is broken down into small fine pieces known as soil. Soil is the topmost layer of the earth crust and hence The Earth's crust is principally composed of both granite and basalt minerals.

Option B is correct.

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