PPT-METAMORPHISM:

Modification of Rocks by Temperature and Pressure Chapter 6 Oceanic crust Continental lithosphere Continental crust Mantle lithosphere Asthenosphere Pressure kilobars Depth 0 km 30. Definition of metamorphism: When magmatic, sedimentary or old metamorphic new stability conditionsdiffer from their original formation conditions, the rocks react towards a new state of chemical and Witwatersrand pyrites and metamorphism K. HALLBAUER Chamber of Mines of South Africa, Research Organization, Johannesburg, Republic of South Africa VON GEHLEN Institut fiir Geochemie, Petrologie und L Rock Environments. Metamorphic Environments. What Is Metamorphism?. Metamorphism. . Changes rock via temperatures and/or pressures unlike those in which it initially formed. All metamorphic rocks have a . 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. . – Write down . 5 things . you learned in the first . 3 . weeks of class!. Chapter 3, Section 3.4. Metamorphic Rocks. Rock Cycle. Sedimentary Rocks. Igneous Rocks. Test . Looking Back. What 4 major processes form sedimentary rock:. Change is Good. Metamorphic Rocks. Formed from intense heat and pressure!. Sources of Heat. 300-1400 degree Celsius temperatures are needed for Metamorphism.. Sources of heat include:. Magma or lava. Metamorphism. Metamorphic rocks: appear to have changed in their structure or chemical composition since their creation or formation.. Originally sedimentary or igneous. Altered by heat, pressure, or exposure to hot fluids in earth’s crust. Introduction to Metamorphism. GLY 4310 - Spring, 2016. 2. Metamorphism Definition. “The mineralogical, chemical, and structural adjustment of solid rocks to physical and chemical conditions which differ from the conditions under which the rocks in question originated” (from the Glossary of geology, 2nd edition) . The Development of Contact Metamorphism About a Cooling Dyke. Aims of the Project. To model the development of metamorphic zones around a dyke that is emplaced at the surface. Develop the discretised 2D heat equation by varying the model’s thermal properties and implementing progressive metamorphism. GLY 2010 - Summer 2016 - Lecture 11. 2. Metamorphism. The mineralogical, chemical, and structural adjustment of solid rocks to physical and chemical conditions. 3. Metamorphic Rock. Any rock derived from pre-existing rocks by mineralogical, chemical, and/or structural changes, essentially in the solid state . 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. CONTACT AND DYNAMIC METAMORPHIC ROCKS. Hornfels, Skarns, Talc-Tremolite Schist, and Epidosite. 2. Contact and Dynamic Metamorphism. The rocks in this lab are formed either by contact metamorphism or by dynamic metamorphism associated with movement along a fault. Spring 2016. 2. Important Note. Material from this review may appear on the final examination, in the same or somewhat altered . form. Questions are on the body of the slide. Answers are in the notes section – this allows you to quiz yourself before checking the answer. 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.