PPT-Grenville Basement Igneous & Metamorphic Rocks of the Llano Uplift

Lisa Bishop Amber Sanderson Savannah Wallace What When Where In central and west Texas exposures of the Grenville Orogeny record 300my of tectonic activity and metamorphism along the Laurentian margin. Metamorphic Rocks . Are Composed of Sedimentary, Igneous, or Metamorphic Minerals that Have Recrystallized.. Marble from Carrara, Italy. Pre-existing sedimentary, igneous, or metamorphic rock changed to a new assemblage of minerals. . 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 .  A roughly oval-shaped area where Precambrian and Paleozoic aged rocks have been exposed by erosion of the Cretaceous rocks of the Edwards Plateau.. Matt Engle, Timothy Fedor, Patrick Glass, Mary Hangen, Kurt Hellmich. 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 . Bell ringer: . Looking at the pictures, what do you think metamorphic rocks are? . What are Metamorphic Rocks? . Metamorphism means “to change form”.. Metamorphic rocks are rocks that form when . There are three different types of rocks . Igneous ,metamorphic , . sedimentry. . I will tell you . information about them. . . Info on the rocks . The igneous rock. The igneous rock can be found in different colours. The igneous rock is formed when magma cools and solidifies, it may do this above . 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?. Lisa Bishop. Amber Sanderson. Savannah Wallace. What? When? Where?. In central and west Texas exposures of the Grenville Orogeny record 300my of tectonic activity and metamorphism along the Laurentian margin.. LOWER-GRADE REGIONAL METAMORPHICS. Slate, Phyllite, . “Greenstone” and Schist. 2. Metamorphic Rock Definition. A sedimentary, igneous, or previously existing metamorphic rock which has undergone textural, structural, and/or mineralogical changes due to the action of one or more agents of metamorphism. Rocks http://www.beg.utexas.edu/mainweb/publications/graphics/granite.htm http://en.wikipedia.org/wiki/File:USDA_Mineral_Sandstone_93c3955.jpg http://www.gccaz.edu/earthsci/imagearchive/gneiss.htm 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. Metamorphic Rock Associations. Outline of this Presentation. Graphical Representation of Metamorphic Reactions and Mineral Assemblages.. Types of Metamorphic Reactions.. Metamorphism of Mafic and Ultramafic Igneous Rocks.. What is Metamorphism. Metamorphism. (from the Greek words for “changing form”) is the process by which rising temperature and changes in other environmental conditions transform rocks and minerals. 6. What is Metamorphism. Metamorphism. (from the Greek words for “changing form”) is the process by which rising temperature and changes in other environmental conditions transform rocks and minerals.