PPT-The Earth IV: Subduction

Zones Lecture 44 How were the continents created So far we have talked about the when but not the how Today there are 3 main mechanisms by which new crust is created Rifting eg African and Rio Grande Rifts and divergent plate boundaries North Atlantic Tertiary Province is an example. 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. (LVZ) at the top of the . subducting. plate has been detected in a majority of . subduction. zones.. LVZ may be a . hydrated layer of oceanic crust . caused by dehydration reactions as the plate . Standard. . S6E5. Students will investigate the scientific view of how the earth’s surface is formed. . a. Compare and contrast the Earth’s crust, mantle, and core including temperature, density, and composition. . Explore: p. 672 - 678. Learning Targets. I can use simple models to simulate the forces acting on tectonic plates.. I can compare directions of plate motions with locations of hot spots, spreading ridges, and trenches. Reporters:. Alconera. , P.P.. Villacampa. , E.. Mangaway. , . Cris. A scientific theory which describes the large scale motions of Earth's lithosphere. . Plate tectonics is the study of how the Earth's plates are driven and shaped by geological forces that keep them in constant motion. . Ben Valentino. 1. , Eduardo Toledo. 2. , Eduardo Nobre. 2. , Luciana Vieira. 2. , . Diogo. Cintura. 2. 1. Department of Earth Sciences, SUNY Oswego. 2. Department of Civil Engineering, . Federal University of . The . Sun. Is HOT!!!. The sun is an . average . star . The heat and light are the result of . Nuclear Reactions . constantly taking place in the sun.. It is in the . center. of our solar system. . Comparison . Trench. A deep depression of the sea floor caused by the . subduction. of one plate under another. . Convergent Subduction Plate Boundary. Oceanic-Continental. Rift Zones. An area in the middle of a continental plate where the plate is beginning to separate. A large valley will form in the area as the crust thins.. What is Earth Science?. What are the Earth System’s four Spheres?. What are cycles and how do they work?. System. : A kind of model often used to describe the natural world.. Closed System. : ENERGY enters and may leave, but MATTER does not leave. Subduction. Fun Fact: The tallest mountain in the world is…. Not Mt. Everest (29,028 ft). It’s Mauna Kea in Hawaii! (31,000 ft) . It doesn’t get as much attention because 2/3 of it is underwater. The Layers of the Earth. The Earth is an oblate spheroid – the . Solid Earth. . . It is composed of a number of . different layers. as determined by deep drilling and . seismic. evidence.. The Four Basic Layers. La gamme de thé MORPHEE vise toute générations recherchant le sommeil paisible tant désiré et non procuré par tout types de médicaments. Essentiellement composé de feuille de morphine, ce thé vous assurera d’un rétablissement digne d’un voyage sur . exhumation. . of. . continental. . crust. in . the. Alps. Nikolaus Froitzheim. Institut für Geowissenschaften. Universität Bonn. 1. . Deep. . subduction. . or. . tectonic. . overpressure. ?. An international multi-disciplinary observatory along a . subduction. zone plate boundary (. ies. ?). “. subduction. . collaboratory. ”. 2014 Fall AGU meeting, San Francisco. EarthScope. Beyond 2018.