what is an igneous rock? describe the methods of formation of igneous rock
Answers
Explanation:
In essence, igneous rocks are formed through the cooling and solidification of magma ( or lava). As hot, molten rock rises to the surface, it undergoes changes in temperature and pressure that cause it to cool, solidify, and crystallize.
Answer:
The word 'Igneous' is derived from the Latin word 'ignis' meaning fire. These rocks were formed due to cooling, solidification and crystallisation of hot molten material of the earth known as magma found at great depths in the interior of the earth. The chemical composition of these rocks varies from alumino-silicate minerals like quartz and feldspar to granite and rhyolite collectively known as Sialic rocks. Since, the igneous rocks were the first to be formed, they are called primary rocks. They form the basis of formation of other types of rocks.
Explanation:
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