PPT-GY111 Physical Geology Lecture 4: Igneous Rocks

Types of Rocks Rock an aggregate of one or more minerals Igneous Rocks crystallize from a magma Sedimentary Rocks Clastic formed by the erosion of preexisting rocks ChemicalBiochemical precipitated from chemical reactions. 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. Joshua and Jennifer Mosser, Briar Woods High School. Ye Olde Rock Cycle. Joshua and Jennifer Mosser, Briar Woods High School. Igneous Rocks. Igneous rocks form from the cooling and crystallization of molten rock (magma, lava). “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.. 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 . geology nd animals preserved in the rock, fossilscommon fossils at Grand Canyon on the back page. remains or imprints of plants or animals preserved in rock BOTTOM. THE ROCKS AT DO YOU FIND THE OL 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. 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 . Evolution of the Continents. Important Terms. Craton: interior of continents made of stable Precambrian and Paleozoic . rocks.. Shield: portion of Craton composed of older Precambrian . rocks.. Platform: portion of Craton made of younger Paleozoic . 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. Metamorphism. Causes of Metamorphism. Elevated T & P. Fluids (H2O, CO2, CH4, etc.). Directed Stress. Types of Metamorphism. Regional: occur along convergent plate boundaries.. Contact: occurs along margin of a magma intrusion.. . GLY 4310 - Spring, 2020. 2. Igneous Textures. Phaneritic:. Crystals are readily visible with the unaided eye.. Aphanitic:. Crystals, if present, are too small to be seen with the unaided eye.. Fragmental: . for engineers. Geology and Geophy. sics Department. King Saud University. Importance of Geology in Civil Engineering. Geology is the study of earth, the materials of which it is made, the structure of those materials and the effects of the natural forces acting upon them . Important Terms. Craton: interior of continents made of stable Precambrian and Paleozoic rocks.. Shield: portion of Craton composed of older Precambrian rocks.. Platform: portion of Craton made of younger relatively undeformed Paleozoic sediments..