Continental Drift‚ Plate Tectonics‚ The North American Plate The experts and scientists have theories on how the the world’s plates move and how earthquakes occur. These theories on how the world’s plate move is called continental drift and the theory on how earthquakes occur is called plate tectonics. They also have a lot of information on the North American Plate and in which direction it is moving and information like that. Now let me tell you more about each of these topics. Continental
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INTRODUCTION Plate tectonics The large scale motions of the earth’s lithosphere are describe by a scientific theory called plate tectonics which explains that Earth’s outer layer is made up of plates‚ which have moved throughout Earth’s history. The theory was developed during first decade of 20th century (by a famous advocate Alfred Wegener) on the older concept of continental drift and was accepted by many geoscientific communities. There are currently seven major and many minor plates are
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What are conditions like on the seafloor? It is in absolute darkness‚ with temperatures near freezing. The water is 3.5 kilometers high and exerts a pressure hundreds of times greater than atmospheric pressure on Earth. What is the main type of igneous rock found on the seafloor? Basaltic rock is heavy and sinks forming the world’s deep ocean basins. Describe the topography of the seafloor: shelf‚ slope‚ canyons‚ rise‚ and abyss. Continental shelf‚ the most shallow and accessible region‚ they cover
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more erosion literally combined the volcanoes into one mass of rocky land * Step 4: the mass of land is now a hard smooth plate‚ the Canadian Shield * Step 5: the Atlantic plate crashed into the east side of Canada and the area of subduction formed the Appalachian mountains * Step 6: erosion moved sand and dirt into the pacific ocean and the atlantic ocean * Step 7: the Pacific plate collided with the west side of Canada‚ forming the Rocky Mountains * Step 8: the
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depicting the locations which are prone to both. Volcanism is associated with two of the plate boundary types: divergent and convergent margins‚ so activity is usually found along oceanic ridges where plates are moving apart‚ near rift valleys‚ on subduction zones where the most violent activity takes place and over hot spots which have given rise to the Hawaiian islands. Magma is generated at most plate boundaries‚ and this magma rises to the surface to form volcanoes. The mobility of crust also causes
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form a volcano. Volcanoes can also occur at tectonic plate boundaries because Volcanoes form where the earth’s crust is thin and the magma can flow to the surface easier. This happens mostly at the edge of the plates. Volcanoes lastly can occur at subduction zones because that is where the crust is being forced down into the lower levels and becomes magma also becomes higher pressure as it moves down something must move up to balance out‚ the magma moves up forming a volcano. Volcanoes can occur in
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divergent plate boundary). Mid-Atlantic Ridge. 4. What are the three types of convergent plate boundaries? Oceanic-continental convergence‚ Oceanic-oceanic convergence‚ Continental-continental convergence. What two kinds of crust are involved in a subduction zone? Oceanic and continental. 7. What type of convergent boundary is the Himalaya Mountains formed by? Continental-continental. 8. What happens along a transform plate boundary? Result in earthquakes and possibly faults. 9. Name a famous
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destructive plate boundary on the south- east coast of China‚ generating pressure during the subduction activity and causing vulcanicity. In the destructive plate boundary‚ magma currents beneath earth crust converge‚ dragging two plates together while the heavier plate sinks and being subducted under another plate‚ the subducted zone will then be melt back to magma again. Pressure accumulates while the subduction of the heavier plate is occurring‚ crack will develop on both plates near the boundary allowing
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April 1st lecture FINAL EXAM IS WORTH 40% Professor goes by Abhi (Obi) like star wars One required textbook Earthquakes science and society lecture will be on additional material not in book but will be guided by materials in the book. take notes (HE SAID IT ALOT!) his lecture slides will not be posted. CH.1 for this lecture Why Learn Earthquakes? Plate Tectonics they are not static they always move. they are moving in a limited space it will cause friction when it moves
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Petrology 2 Sedimentary Petrology Assigned to : • Amaro‚ Elfe C. • Balansag‚ Imee S. Research Paper Outline 1. Origin and Formation a. How did sediments and sedimentary rocks originate? b. What are the four (4) components or earth materials that make up or constitute sedimentary rocks? c. What are the major types of basins on which sediments accumulate and form sedimentary rocks? 2. Identification a. How do we describe sedimentary rock types?
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