PPT-Plate tectonics initiation

as a random outcome of timedependent convection Teresa Wong Slava Solomatov Theory of Earth II AGU Fall Meeting 19 December 2014 1 Major questions on initiation of plate tectonics. Simplified Plate Tectonics MapPlate boundary - Known area between two plates.Some plate boundaries, such as the North America - South America boundary, are not shown because scientic dataare inadequa The word tectonics derives from the Greek tektonikos, meaning "pertaining to construction." 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. Robert T. Pappalardo. Jet Propulsion Laboratory,. California Institute of Technology. Copyright 2012 California Institute of Technology. Government sponsorship acknowledged.. Ganymede’s Tectonics: Outline. 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.. Chapter 12.2 BC Science 10. A Cross-Section of Earth. The Layers of Earth. Earth is over 1200 km thick and has four distinct layers:. Crust. – outer solid rock layer (granite on land, basalt in oceans). 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. Plate Tectonics. Became a theory in the 1960’s. Describes plate movements AND explains why they move. Plate Tectonics. Two types of crust: Oceanic and Continental. Plates are usually made of both. Chapter 5. 5.1 Vocabulary Terms. Continental drift. Pangaea. Fossil . Wegener’s Hypothesis (. pg. 164). In 1915, Wegener hypothesized that all the continents were once joined together in Pangaea about 300 million years ago and have since drifted apart.. Theory of Plate Tectonics-. Theory that states the earth’s crust is broken into plates that float on lower mantle. Theory combines the theories of . continental drift . and . sea floor spreading . It states how and why . 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. Structure of the Earth. What are the different layers of the Earth?. Structure of the Earth. Inner core. 6000. °C. Solid metal. Structure of the Earth. Outer core. 4500-6000. °C. Liquid metal. Structure of the Earth. http://sos.noaa.gov/datasets/Land/paleo.html. Animations. . On the move…. Plate Tectonics: . the rocky history of an idea. Ever notice that the shore lines of South America and Africa seem to fit together?.