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. “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.. 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. Igneous. rocks form from the solidification or crystallization of minerals in molten material.. If the rock form below the Earth’s surface it is considered . magma. Molten rock that hardens on the Earth’s surface is called . Introduction. Igneous Rocks – rocks that appear to have been molten in the past. Molten rock names (based on location). Magma: molten rock found anywhere beneath the earth’s surface. Lava: molten rock that flows out onto the earth’s 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. Sedimentary. Igneous. Metamorphic. Sedimentary Rock. Write the term and what you believe it to mean. Sedimentary. Contains sediments. Sediments can include:. mud, sand, pebbles, shells, bones, leaves, stems and other remains of living things. 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. the . Rock Cycle . Rocks & . the . Rock Cycle . Minerals and rocks are stable only under the conditions at which they form. . Change the conditions and the rocks . will change to adapt to the new conditions.. 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. 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 . 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..