The process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle. The new forms a new part of earths crust.
Seafloor Spreading Seafloor Spreading Plate Tectonics Continental Drift
The rifting processes coinciding with the onset of a new spreading centre typically start with an upwelling of hot mantle rocks under continental lithosphere the heat leading to uplift and associated erosion.
Diagram of seafloor spreading. What they discovered was the mid-ocean ridge was actually a site where tectonic plates which are large pieces of. Below is a diagram of the seafloor. In the space below draw a diagram of the sea floor spreading.
The seafloor is spreading just as we speak. Seafloor Spreading and Polar Reversal. D1 dikes are intruded by D2 generation younger basaltic andesite and andesite dikes that strike northeast-southwest and dip steeply 6576 to the southeast Fig.
Http Www Soest Hawaii Edu Oceanography Courses Html Ocn201 Instructors Decarlo S2015 7 Platetectonicsi Pdf. Deep valley or underwater canyon where the oceanic crust sinks back toward the mantle. Seafloor spreading is a process that occurs at mid-ocean ridges where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.
When you are finished your piece of paper should look like the diagram in Figure 1. Some of the worksheets for this concept are 5 4 ovr l lesson 3 seafloor profiling Sea floor spreading work A model of seafloor spreading Plate boundary work Name date sea floor spreading l 1 2 3 Lesson 3 a moving crust Continental drift sea floor spreading and plate tectonics Inside earth work. Martinez et al 2006.
Seafloor spreading occurs along mid-ocean ridgeslarge mountain ranges rising from the ocean floor. 1 continental fit 2. Ferrini et al 2008.
Evidence for Continental Drift. Diagram Plate Tectonics Seafloor Spreading. A Model of Seafloor Spreading KEY 1.
New sea floor is produced when tectonic plates split apart. The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid-ocean ridge is the spreading half-rate and is equal to half of the spreading rate. Diagram Of The Sea Floor Spreading Building And Troubleshooting.
The strips of paper represent oceanic crust or seafloor. Include as much detail as you can. Youngest rocks are along MOR magnetic reversals recorded by rocks pillow lava photos underwater temps.
Seafloor spreading is the creation of new seafloor or new oceanic crust 5. 5 With a pair of scissors cut the vertical lines so there will be three slits on the paper all the same height and parallel to each other. Did you ever think the seafloor could be spreading.
Seafloor Diagram Displaying top 8 worksheets found for – Seafloor Diagram. Seafloor spreading in back-arc basins contrasts significantly with that along mid-ocean ridges characterized by very distinct manifestations of hydrothermal activity imposed by a unique combination of mantle dynamics and crustal structure and composition Baker et al 2006. The earth does not get bigger.
Conclude with the significance of the phenomena in the formation of geographical features. The East Pacific Rise is a mid-ocean ridge that runs through the eastern Pacific Ocean and separates the Pacific plate from the North American plate the Cocos. Include as much detail as you can.
Label the mid-ocean ridge and subduction zones. The wonderful digital photography below is part of Sea Floor Spreading Worksheet piece of writing which is arranged within Budget Spreadsheet seafloor spreading lab worksheet answers sea floor spreading worksheet seafloor spreading worksheet flying colors science and published at July 27th 2021 160652 PM by Azeem Morris. As a general rule fast ridges have spreading opening rates of more than.
Spreading rates determine if the ridge is fast intermediate or slow. Some Important facts about this topic are. Exit Ticket In the space below draw a diagram of seafloor spreading.
The oldest sections should be the sections on both sides furthest from the middle 4. There was a problem previewing ESS – Sea Floor Spreadingpdf. Evidence for Seafloor Spreading.
The magma is then cooled by sea water. Schematic diagram showing the mechanism of seafloor spreading. The center slit represents a Mid-Ocean Ridge 2.
Vocabulary words key vocabulary words that are targeted or taught as part of the lesson. Understanding these words is essential for students to understand the key concepts of this lesson Seafloor Magnet Magnetic Field Mid-ocean Ridge. Geology Of North Cascades National Park.
Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. These orientations of the D1 dikes suggest a north-northeastsouth-southwest direction of extension during the seafloor spreading formation of the Küre oceanic crust. Thus it is not surprising that the composition of hydrothermal fluids in the vicinity of the.
Use suitable diagrams to ensure the content is holistically conveyed. The process of adding more crust to the ocean floor. The Mid-Atlantic Ridge for instance separates the North American plate from the Eurasian plate and the South American plate from the African plate.
Then magma wells up to fill the gap.
Seafloor Spreading Seafloor Spreading Earth Science Activities Earth Science Lessons
Sea Floor Spreading And Continental Drift Seafloor Spreading Plate Tectonics Continental Drift
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Gallery of Fresh Diagram Of Seafloor Spreading
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