Igneous rocks appear first on the earth because they are formed by condensation of gas of solar nebula that existed even before the Earth’s rock cycle began.
Further Explanation:
Igneous rocks are referred to as magmatic and one of the rocks that is molded by the solidification, and freezing. These rocks are formed by partial melts of the planet's crust or mantle.They are considered the first rocks on the earth because they are formed by the gas of solar nebula that exists before the rock cycle of the earth even started. Also, rocks formed by solar nebula condensation didn’t exist on earth.
The formation of igneous rocks can occur done by increasing the temperature, by decreasing pressure or by changing the alignment of the soil. These processes occur either on the surface of extrusive rocks or below the intrusive rocks and can form layer covering upto16 km of Earth’s crust volume. The rocks can be categorized by its texture and chemical and mineral assemblage. The different types of rocks are even accountable for the tectonic collision that develops friction, continental collision, and distortion.This formation also gets evidence regarding the extent of temperature and pressure inside the earth’s surface.
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Answer Details:
Grade: High School
Subject: Biology
Topic: Rocks
Keywords:
Igneous rocks, friction, collision, distortion, earth, temperature, pressure, collision, tectonic, gas, melts, crust, solidification.
