Great globs of molten rock rise toward the surface. However, extrusive rocks form from lava at the surface of the Earth, whereas intrusive rocks form from magma underground, often relatively deep in the Earth. Compare Igneous Rocks and find the rock with most attractive texture! - 5502329 Examples include basalt, rhyolite, andesite, and obsidian. A pluton is a block of intrusive igneous rock. (Extrusive = Exits the Earth) Sediments are small pieces of rock that are moved by water, wind, and gravity. 6 Answers. Most extrusive (volcanic) rocks have small crystals. Answer Save. Get to know the difference between the two Igneous Rocks by comparing their properties, features, texture, uses and appearance. 1 decade ago. ... Diorite is an intrusive igneous rock composed principally of the silicate minerals plagioclase feldspar (typically andesine), biotite, hornblende, and/or pyroxene. Get an answer for 'Compare and contrast the types of igneous rocks.' Compare and contrast extrusive igneous rocks from intrusive igneous rocks in process of formation, cooling time, crystal size and example. Determination of intrusive and extrusive igneous rocks. You can also go through the reserves of Igneous Rocks. If the body has an exposed surface area greater than 100 km2, then it’s a batholith, otherwise it’s a stock. Intrusive igneous rocks come from magma, forming deep underground and taking longer to cool, meaning they form larger crystals. Extrusive igneous rocks come from lava, forming at the surface of the Earth and cooling quickly, meaning they form very small crystals. Compare and contrast extrusive and intrusive igneous rock.? Favourite answer. Extrusive igneous rocks form when magma reaches the Earth's surface a volcano and cools quickly. Neither, Igneous rock is either intrusive or extrusive. Skechers. Relevance. Characteristics A body of intrusive igneous rock which crystallizes from magma cooling underneath the surface of the Earth is called a pluton.If the pluton is large, it may be called a batholith or a stock depending on the area exposed at the surface. Sodium (Na) 2 Types of Igneous Rocks Intrusive Rock forms when magma cools and solidifies inside the Earth. We have moved all content for this concept to for better organization. Some of the Igneous Rocks rocks are Granite, Obsidian, Basalt, Diorite, Gabbro. Lv 7. Thats what intrusive and extrusive is... A igneous rock. Potassium (K) 8. Igneous rocks: intrusive (plutonic) versus extrusive (volcanic) rocks formed from magma - an overview. The chemical composition of diorite is intermediate between gabbro and granite. Extrusive rocks and intrusive rocks both form when hot molten material crystallizes. Please update your bookmarks accordingly. 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