GEOLOGY

Detailed explanation-1: -Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface.

Detailed explanation-2: -What are Igneous Rocks? Igneous rocks are defined as types of rocks that are formed when molten rock (rock liquefied by intense heat and pressure) cools to a solid state. Lava is molten rock flowing out of fissures or vents at volcanic centres (when cooled, they form rocks such as basalt, rhyolite, or obsidian).

Detailed explanation-3: -Intrusive igneous rocks solidify within Earth. These rocks are also known as plutonic rocks-named for Pluto, the Greek god of the underworld.

Detailed explanation-4: -These rocks include: andesite, basalt, dacite, obsidian, pumice, rhyolite, scoria, and tuff.

Detailed explanation-5: -Igneous rocks come from melted rock material, or magma, that lies beneath Earth’s surface. Igneous rocks form when magma from inside the Earth moves toward the surface, or is forced above the Earth’s surface as lava and ash by a volcano. Here it cools and crystallizes into rock.