PPT-1 Extrusive Igneous Rocks, part 1

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. 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. “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. Major Rock Groups . 2. Igneous . Sedimentary . Metamorphic. Rocks. are melted due to extreme heat creating . magma. . New rocks are . formed when. magma cools down.. Rocks form at Earth’s surface when. 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. Geology 121 Course Notes. Add Section Title. Add section detail briefings. Intrusive rocks. Porphyry. Pyroclasts. Extrusive rocks. Classification of Igneous Rocks. Intrusive rocks. Porphyry. Pyroclasts. Rocks that crystallized directly from a melt. Igneous rocks . Form as magma cools and crystallizes . Rocks formed inside Earth are called . plutonic. or intrusive rocks . Rocks formed on the surface . Syenite, Phonolite, . Ijolite. , Carbonatite, Ultramafic Rocks and Lamprophyre. 2. IUGS Intrusive Igneous Rock Chart . 3. General Intrusive Rocks Classification. . 4. Position on IUGS Diagram. Syenites are on the border between the QAP and the APF triangles. Rocks are composed of two or more minerals. Rocks are very helpful in dating the age of the earth. Classification of Rocks. Igneous rocks. Sedimentary rocks. Metamorphic rocks. Igneous Rocks. The word ‘igneous’ has been derived from a . 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. 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? . 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. CLASSIFICATION OF ROCKS:. ON THE BASIS OF MODE OF FORMATION ROCKS ARE CLASSIFIED INTO THREE CATEGORIES:. 1 IGNEOUS ROCKS. 2 SEDIMENTARY ROCKS. 3 METAMORPHIC ROCKS.  . ROCKS. IGNEOUS ROCKS:.  . IGNEOUS ROCKS, ALSO KNOWN AS PRIMARY ROCKS ARE FORMED BY SOLIDIFICATION OF MAGMA. MAGMA IS MOLTEN ROCK MATERIAL CONSISTING OF LIQUID,GAS AND CRYSTAL.IGNEOUS ROCKS ARE RECODS OF THERMAL HISTORY OF EARTH..