PPT-Plate Tectonic Theory

One Theories Journey Continental drift One theorys journey Today you might be laughed out of a geology course for questioning whether continents move through geologic time But 75 years ago only skeptics believed that continents could take a hike Talk about conventional . 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. 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. . OR. Control of margin dynamics by sediments, part 4: erosion and transport. Alex Densmore. Department of Geography & Institute of Hazard, Risk and Resilience. Durham University. Sanjeev discussed sedimentary basins as bathtubs that evolve and fill over geological time scales, and (importantly) preserve a record of the detritus from margin evolution. 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”.. The Most Amazingly Radical Tectonic Area Project . M.A.R.T.A.. Skype Session . With Ranger Mike from Yellowstone National Park kicked off the project.. He spoke to students about how important what goes on inside the Earth is to Yellowstone.. Why do people live in tectonic areas and how are the possible effects being managed?. Why do people live in tectonic areas?. In pairs discuss: . Which area of the world has the highest number of people potentially affected by tectonic activity?. What to do: identify the features in the photos, make notes about landforms, describe and explain case studies . Levelled Objectives. . (What are we learning?). L1. identify tectonic landforms. L2. describe & explain landforms. What You Will Learn. Describe the formation and movement of magma. . Explain the relationship between volcanoes and plate tectonics. . Summarize the methods scientists use to predict volcanic eruptions. . Unit 12.1. These observations lead him to come up with the . ___________________________. A very long time ago (~200 million years) the continents were joined together in a . ___________________. called . CONTINENTAL DRIFT THEORY. ALFRED WEGENER . proposed all continents . . originally formed from one landmass . . (PANGEA). EVIDENCE OF CONTINENTAL DRIFT:. . 1. Fossilized tropical plants in Greenland. 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. (Lesson 22). ENQUIRY QUESTION 3:. How successful is the . management. of tectonic hazards and disasters?. H/W :TASK 4. Read the information . (Hodder page 90 in this booklet) . about two recent tectonic mega disasters : . 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. Ghafoor. 5. th. hour. 12-9-16. Oceanic V.S Continental Crust . Oceanic Crust . It is composed of several layers, not including the overlying sediment. . Oceanic crust is about 6 km (4 miles) thick..