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. Structure of the Earth. The Earth is made up of 3 main layers:. Core. Mantle. Crust. Inner core. Outer core. Mantle. Crust. The Crust. This is where we live!. The Earth’s crust is made of:. Continental Crust. (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 . 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 . Subduction. Bruce Buffett, UC Berkeley. May 6, 2016. The Open University. (S. . Rost. ). Mantle Convection. Plate. tectonics is the surface expression of mantle convection. - s. ource of buoyancy. Discussion 1. MULTIDISCIPLINARY. La/. Yb. spikes in Andes: Crustal thickness & . pluton. ages in other . orogenies. . . GeoRock. La is . incompatiable/Yb. is marginally compatible. See Planck & Langmuir, 93. 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. exhumation. . of. . continental. . crust. in . the. Alps. Nikolaus Froitzheim. Institut für Geowissenschaften. Universität Bonn. 1. . Deep. . subduction. . or. . tectonic. . overpressure. ?. Morondova. plume. Bernhard . Steinberger. 1,2.  . and. . Douwe. van . Hinsbergen. 3. 1. GFZ . German Research . Centre. . for. . Geosciences. , . Geodynamic. . Modelling. Sec. 2.5, Potsdam, Germany (. 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 . subducts. .. LVZ has interesting consequences for imaging the . An international multi-disciplinary observatory along a . subduction. zone plate boundary (. ies. ?). “. subduction. . collaboratory. ”. 2014 Fall AGU meeting, San Francisco. EarthScope. Beyond 2018. By: April Carlisle and Stephen Loucks. Harry Hess. The surface of this planet is not fixed as it seems but rather broken up like pieces of a jigsaw puzzle. There are enormous plates that move under Earth, this process is called plate tectonic, and it transformed the thinking of geologist everywhere. One of them, Harry Hess, was a factor in figuring out how plate tectonics worked. . Ch.Kkallas. 1. ,. C.Papazachos. 1. ,. . D.Vamvakaris. 1. ,. 1. Aristotle Univ. Thessaloniki. Papazachos. and . Papazachou. (. 2003. ). The most important feature in the Aegean region is the westward movement of the Anatolia plate along the North Anatolia fault, as well as the .