WebIntrusive (plutonic) igneous rocks; Extrusive (volcanic) igneous rocks ← ... (or, matrix) of aphanitic crystals. Extrusive igenous rocks with phenocrysts in an aphanitic matrix are called porphyry; they form when magma has partially cooled below the surface (forming the phenocrysts) ... Rhyolite is the extrusive equivalent of granite. It is ... WebMar 6, 2024 · The terms "intrusive" and "extrusive" are used to classify igneous rocks according to where they formed (within or outside the Earth's crust). Whereas "foliated" and "nonfoliated" are used to classify metamorphic rocks according to their texture. The terms "basaltic," "granite," and "andesitic" are used to describe the composition of igneous rocks.
Virtual Collection: Extrusive Igneous Rocks — Earth@Home
Web27. intrusive and extrusive igneous rock A two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet. WebExplanation: Intrusive, or plutonic, igneous rock forms when magma is trapped deep inside the Earth. Extrusive igneous rock, also known as volcanic rock, is formed by the cooling of molten magma on the earth's surface. The magma, which is brought to the surface through fissures or volcanic eruptions, rapidly solidifies. car for business and personal use
Rocks: Igneous, Sedimentary & Metamorphic …
WebIgneous 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. … WebUsing Granite and Basalt as examples, compare the intrusive and extrusive rocks, and discuss the grain sizes, and silica contents of these rocks related to intrusive/ extrusive settings. 2. What are the four major classes of sedimentary rocks based on various formation settings? Classify sedimentary rock group in this lab by these different ... WebExtrusive sedimentary rockC. Intrusive igneous rockD. Extrusive igneous rock 9. which of the following is an example of intrusive igneous rocka.graniteb.gabbroc.both a and b 10. 9. Which rock type is formed from hardened magma beneath the Earth's surface? A. Intrusive metamorphic rock B. Extrusive sedimentary rock C. Intrusive igneous rock D ... car for cheapest insurance