GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This type of rock is a result of volcanic activity and found in small amounts at the very top of the Grand Canyon.
A
igneous rock
B
coral
C
limestone
D
sedimentary rock
Explanation: 

Detailed explanation-1: -The most abundant volcanic rocks are basalt (or basaltic rocks). Basaltic rocks form from very hot molten material and are very enriched in high-temperature mafic minerals.

Detailed explanation-2: -If magma cools slowly, deep within the crust, the resulting rock is called intrusive or plutonic. The slow cooling process allows crystals to grow large, giving intrusive igneous rock a coarse-grained or phaneritic texture.

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