PPT-Volcanoes and Plate Tectonics

Volcanism is mostly focused at plate margins Pacific Ring of Fire This map shows the margins of the Pacific tectonic plate and surrounding region The red dots show the location of active volcanism Notice how the majority of the volcanism is focused in lines along the plate boundaries For this region is the area known as the Pacific Ring of Fire. Earth habitable. ? . Earth is the only planet in the Solar System with plate tectonics. The outer crust of the Earth is broken up into regions known as tectonic plates. These are floating on top of the magma interior of the Earth and can move against one another. When two plates collide, one plate can go underneath another.. as a random outcome of . time-dependent convection. Teresa Wong. Slava. . Solomatov. Theory of Earth II. AGU . Fall Meeting . 19 December . 2014. 1. Major questions on initiation of plate tectonics. Zachary Gallegos. University of New Mexico / Mars One. Mars Orbiter Laser Altimeter Map. Plate Tectonics. Lithospheric plates sliding on the asthenosphere, above the mantle. Exists on Earth. Theory proposed in the early 1900’s. Composition of the Earth: . Layers of the Earth: . Crust: . 5-100km thick. . Oceanic crust: thin and more dense, mostly basalt . Continental crust: thicker and less dense, made up of more granite than oceanic crust . 4 Layers of the earth. 7 main plates of the earth. 3 main plate boundaries. 2 types of crust. 3 main features of plate tectonics (F.E.E.D). 3 main theorists and theories. Human interaction. Structure of the Earth. Volcanism is mostly focused at plate margins. Pacific Ring of Fire. This map shows the margins of the Pacific tectonic plate and surrounding region. The red dots show the location of active volcanism. Notice how the majority of the volcanism is focused in lines along the plate boundaries? For this region is the area known as the “Pacific Ring of Fire”.. 6. th. year Geography. Learning Outcome. Revise Core Book. Chapters 1 – 3. Plate Tectonics. Earthquakes. Volcanoes. Examine the exam questions on these topics. Theory of Plate Tectonics. Earths plates move. Describe how the locations of volcanoes are related to plate tectonics.. Suggest why volcanoes are found at convergent and divergent plate boundaries.. Describe how . intraplate. volcanoes form.. Volcanic activity takes place primarily at . Evidence for Plate Tectonics. Changes in Sea Floor Magnetism. Evidence for Plate Tectonics. Continents fit together like a puzzle. Changes in Sea Floor Magnetism. Evidence for Plate Tectonics. Fossils of plants and animals of the same species found on different continents. . www.iris.edu/ieb. Exercise: http://. www.iris.edu/hq/resource/african_mystery. How do earthquakes provide evidence of plate tectonics?. With a partner, choose a type of plate boundary:. Divergent. Convergent. Divergent. Convergent. Transform. Three types of plate boundary. Spreading ridges. As plates move apart new material is erupted to fill the gap. Divergent Boundaries. Iceland has a divergent plate boundary running through its middle. . . Cause. most volcanoes are formed when two of Earth’s plate collide. the collision drives one of the plates under another . the plate that is under the other one begins to melt-->this melted rock is known as magma. : Western US. Authors: Ruth Powers (UNAVCO Master Teaching-in-Residence); . Becca Walker and Shelley Olds (UNAVCO). Activity Outcomes. Learners should be able to…. Describe how the locations of earthquakes, volcanoes, and velocity vectors from GPS stations in the Western United States inform us about plate boundary zones. Richard Palin, University of Oxford, UK;. M. Santosh, China University of Geosciences, Beijing (CUGB). University of Adelaide, Australia. Ortelius World Map . Typvs. Orbis . Terrarvm. , 1570.. Culmination of centuries of research.