Lava that cools so quickly that ions do not have time to arrange themselves into crystals will form igneous rocks with a fine-grained texture.
Further Explanations:
The rocks can be categorized by its texture and chemical and mineral assemblage. Theses rocks are even responsible for the tectonic collision that results in the distortion, continental collision, and friction. From its formation, we can also get information about the extent of pressure and temperature below the Earth's surface. The lava erupts to the outward form faults and holes on the surface of the Earth through Volcanoes that are the opening from where lava, tephra, and steam from inside the earth to surface. The volcanic terrains get formed by the slow eruption of lava. Most of the eruption occurs due to the movement of the tectonic plates that creates pressure inside the earth and forces the lava top to erupt to the surface of the earth.
The consistency of the rocks thus formed depends on the time taken by lava for cooling. Slower the rate of freezing larger the formation of crystals into fine-grained texture.
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Answer Details-
Grade: High School
Subject: Geography
Chapter: Volcanoes
Keywords: texture, chemical, mineral assemblage, tectonic collision, distortion, continental collision, and friction, Earth's surface,lava, tephra, and steam, volcanic terrains, tectonic plates
