33. An extrusive igneous rock with a fine grained-texture, low silica content and dark color is A. calcite B. limestone C. basalt D. shale E. schist

Question

Jamarcus Francis

Geography

9 December, 18:45

33. An extrusive igneous rock with a fine grained-texture, low silica content and dark color is A. calcite B. limestone C. basalt D. shale E. schist

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Answers (1)

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Douglas Smith · Answer 1

C. basalt

Explanation:

Basalt -

It is a type of mafic extrusive igneous rock which is composed of magnesium and iron lava, is called as a basalt.

Around 90% of the rocks of the Volcanoes are made up of Basalt.

The texture of this Basalt is, finely grained, because, the rocks are found by rapid cooling.

The viscosity of Basalt is low, due to its low content in silica.