PPT-Tectonics

III Hotspots and mantle plumes Hotspot tracks Global distribution Location of hotspots and hotspot tracks Figures from Turcotte and Schubert Hotspot tracks A view on the Pacific . According . to Alfred Wegener, the super-continent of Pangea began to break up 200 million years ago with the continents attaining the size, shape, and location where we see them today. This movement of continents has not yet come to an end. According to J. Tuzo Wilson, the breakup and drifting of the present continents . Liz LaRosa for use with my 5. th. Grade Science Class . http://www.middleschoolscience.com. 2009 . Earth’s Layers. The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. . 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 Imagine the Earth as a hardboiled egg…………………….. The thin brittle shell is the crust that humans live on.. The thick jelly like white is the deep hot magma beneath the surface.. The yellow yolk is the core of the earth.. What Lies Beneath. DMoutoux. & Earth Science. Class of 2015. Where is Kenai Fjords National Park?. Why Visit Kenai Fjords National Park?. View arctic marine wildlife. Visit fjords and glaciers. Sea kayak, hike, backpack. 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.. Evolution of the Earth. Cracks in the Earth’s Crust. The . crust. , when it is solid, acts as a . heat insulator. for the hot interior of the Earth.. The molten material in the mantle, . magma. , below the crust builds up tremendous heat and pressure. . 2 South AmericaAfrica Near perfect fit when continents are joined by continental margins. Plate Tectonics Matching rock assemblages across Glacial striations reveal ancient continental connections. P 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. 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. 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 . p. otential hotspot. p. otential hotspot. Based on illustration by . Lidunka. . Vočadlo. , University College London. We propose this scenario: . Layered Mantle Convection. Location of the boundary can be adjusted to suit different needs..