PPT-1 Extrusive Igneous Rocks, Part 2

RHYOLITES LATITE TRACHYTE AND GLASSY EXTRUSIVE ROCKS 2 IUGS Extrusive Igneous Rock Chart 3 Silica Content Classification 4 Naming aphanitic rocks In naming aphanetic extrusive rocks the name is often based only on a few phenocrysts This is why a mafic name prefix is often used for example hypersthene andesite A better name is hypersthene phenoandesite. Hot rocks/Fire Rocks. Igneous Rock . Igneous rocks form . when molten rock cools and solidifies. . Molten rock is called magma when it is below the Earth’s surface and lava when it is above.. when molten rock cools and solidifies. Material that forms the earth’s crust.. What are rocks made from?. Rocks are made up of different minerals.. These minerals are held together by a natural cement.. There are many different types of rocks with different mineral content, hardness, and texture. . Sedimentary . Metamorphic. . I. gneous. Sedimentary . Metamorphic. . FIRE. I. gneous. Sedimentary . Metamorphic. . Magma . C. ools. S. olidifies. Origin =. FIRE. I. gneous. Sedimentary . Metamorphic. “Liquid Hot Magma!”. Igneous Rocks. Rocks formed from cooling of lava or magma. Lava-Melted rock erupted from volcanoes and deposited on the earth’s surface. Cools quickly.. Magma-Melted rock that sits inside the earth in a magma chamber. Cools slowly.. Types and famous rocks. What is a rock????. A rock is a structure composed of one or more minerals. Igneous Rocks. Also called plutonic rocks. Formed from magma. intrusive rocks form underground. extrusive rocks form above ground. Question #. 1b. Hardness. Texture Luster. Igneous rocks are classified in what three ways?. Question #1. Igneous rock that forms . IN. . the . earth is ________.. Igneous rock that forms when molten. Granite, Alkali Feldspar Granite, Granodiorite, Quartz Monzonite, and Monzonite. 2. IUGS Intrusive Igneous Rock Chart . 3. “Granite”. Rocks in this lab are plutonic. They formed by very slow cooling and show corresponding large crystals. Mineral and Rock Vocabulary. Rock. Rock is a solid mixture of crystals of one or more minerals. Rocks are categorized into 3 types on how they are made. Each rock in each category is classified (named) by its TEXTURE and COMPOSITION. Molten material (aka magma or lava) cools. . L. ava . above the Earth’s surface. M. agma . below the Earth’s . surface. Where . - . Intrusive . Igneous . Rock. IN. trusive. . – . IN. SIDE . the Earth . Sedimentary-sandstone. Metamorphic- gneiss. Igneous- diorite. 1. What is a Rock?. Naturally Occurring . (not man made). Solid. Mixture of minerals other organic matter. 2. What makes a rock different from a mineral?. Compare these pictures, can you determine how old she is? . What is the difference between these two images?. What is the difference between these two images?. Definitions . Now take 10 minutes to look up extrusive and intrusive, what do these words mean? . a. metamorphic rock. . b. sedimentary rock. . c. igneous rock. d. sediment. . #1. Which of the following processes is NOT part of the rock cycle?. a. solidification. . b. chiseling. c. erosion. d. metamorphism. BASALTS, DIABASES, ANDESITES, DACITES and RELATED ROCKS. 2. Types of Igneous Rock. Extrusive. Intrusive. Pyroclastic. Lava Flow. Hypabyssal. Plutonic. 3. Igneous Rock Classification. Igneous rocks may be classified on the basis of what minerals they contain. http://www.youtube.com/watch?v=aCnAF1Opt8M. 1. What are the building blocks of rocks? . 2. How are rocks classified?. 3. What are the parts of a volcano?. Magma chamber. vent. Crater. sill. Magma conduit.