Core Unit 1: Patterns and Processes in the Physical Environment
... along plate margins. Evidence: Rocks at the centre of the ocean floors have proven to be younger than rock at the plate margins. ...
... along plate margins. Evidence: Rocks at the centre of the ocean floors have proven to be younger than rock at the plate margins. ...
Continental Drift and Plate Tectonics Notes
... It appears that mountain ranges end abruptly on one continent and pick back up on another. Even the layers of rocks within these mountains match up – evidence that they used to be part of the same mountain range before the continents split. ...
... It appears that mountain ranges end abruptly on one continent and pick back up on another. Even the layers of rocks within these mountains match up – evidence that they used to be part of the same mountain range before the continents split. ...
ACTIVITIES PART 1 – Types of Plate Boundaries Go to the website
... a. Spreading centers occur where two plates are moving away from each other, and deep cracks are opened through the crust. New crust is created by magma pushing up from the mantle. ...
... a. Spreading centers occur where two plates are moving away from each other, and deep cracks are opened through the crust. New crust is created by magma pushing up from the mantle. ...
Plate Tectonics Webquest
... where the ocean floor was being ripped in two lengthwise along the ridge crest. New magma from deep within the Earth rises easily through these weak zones and eventually erupts along the crest of the ridges to create new oceanic crust. This process, was later called _____________ _____________. 13. ...
... where the ocean floor was being ripped in two lengthwise along the ridge crest. New magma from deep within the Earth rises easily through these weak zones and eventually erupts along the crest of the ridges to create new oceanic crust. This process, was later called _____________ _____________. 13. ...
Internal Structure of the Earth
... • Molten material rises at the Mid-Ocean Ridge. • The material flows away from the ridge, carrying the land that was once ...
... • Molten material rises at the Mid-Ocean Ridge. • The material flows away from the ridge, carrying the land that was once ...
Year 3 Plate Tectonics
... Fold Mountains along destructive margins: The Andes The Andes are located where the Nazca Plate, made of dense oceanic crust, is subducted beneath the South American Plate, made of lighter continental crust. More than 100 million years ago, the Andes began to form by the uplifting and folding of se ...
... Fold Mountains along destructive margins: The Andes The Andes are located where the Nazca Plate, made of dense oceanic crust, is subducted beneath the South American Plate, made of lighter continental crust. More than 100 million years ago, the Andes began to form by the uplifting and folding of se ...
PowerPoint Presentation - The Earth, Plate Tectonics
... floor, and the rock beneath it, are produced by magma that rises from deeper levels. Hess suggested that the ocean floor moved laterally away from the ridge and plunged into an oceanic trench along the continental margin. ...
... floor, and the rock beneath it, are produced by magma that rises from deeper levels. Hess suggested that the ocean floor moved laterally away from the ridge and plunged into an oceanic trench along the continental margin. ...
Molly
... have answered the questions in the following paragraphs. The most recent earthquakes are occurring at plate boundaries. Specifically, convergent and transform boundaries. I noticed that all the data was plotted on islands, mountains, faults, and coastlines. Earthquakes are most likely to occur on co ...
... have answered the questions in the following paragraphs. The most recent earthquakes are occurring at plate boundaries. Specifically, convergent and transform boundaries. I noticed that all the data was plotted on islands, mountains, faults, and coastlines. Earthquakes are most likely to occur on co ...
Key_Final_Exam_EESC116301_14U
... only occur at convergent plate boundaries are found only in Africa are found only in North America always form at Hot Spots ...
... only occur at convergent plate boundaries are found only in Africa are found only in North America always form at Hot Spots ...
File
... – It pressed against and subsided under the crust which make up the floor of the Pacific Ocean – Constant rubbing of both the plates melts some rocks, magma forms and erupts out forming the islands. Process known as?????????????????????????? ...
... – It pressed against and subsided under the crust which make up the floor of the Pacific Ocean – Constant rubbing of both the plates melts some rocks, magma forms and erupts out forming the islands. Process known as?????????????????????????? ...
What is plate tectonics?
... The crust and the rigid, outer zone of the mantle make up a layer that is called the lithosphere. The zone directly under the lithosphere is made of a flowing, denser layer called the asthenosphere. ...
... The crust and the rigid, outer zone of the mantle make up a layer that is called the lithosphere. The zone directly under the lithosphere is made of a flowing, denser layer called the asthenosphere. ...
d12 Oceanic-oceanic, oceanic-continental, and - e
... of a plate can be completely subducted to vanish at depth within the mantle. In the case of oceanicoceanic convergence one of the plates subducts (example: Marguari). In the case of oceaniccontinental the oceanic plate subducts (example: Andean) and more rarely obducts (example: Oman).3 In the case ...
... of a plate can be completely subducted to vanish at depth within the mantle. In the case of oceanicoceanic convergence one of the plates subducts (example: Marguari). In the case of oceaniccontinental the oceanic plate subducts (example: Andean) and more rarely obducts (example: Oman).3 In the case ...
Lithospheric Plates
... process, silica in rocks of the subducted slab melts first. So the magma produced tends to be felsic (rich in light-coloured minerals such as quartz) and very sticky – this is why volcanoes at convergent boundaries are explosive. ...
... process, silica in rocks of the subducted slab melts first. So the magma produced tends to be felsic (rich in light-coloured minerals such as quartz) and very sticky – this is why volcanoes at convergent boundaries are explosive. ...
Seafloor Spreading.pps
... process, silica in rocks of the subducted slab melts first. So the magma produced tends to be felsic (rich in light-coloured minerals such as quartz) and very sticky – this is why volcanoes at convergent boundaries are explosive. ...
... process, silica in rocks of the subducted slab melts first. So the magma produced tends to be felsic (rich in light-coloured minerals such as quartz) and very sticky – this is why volcanoes at convergent boundaries are explosive. ...
Seafloor Spreading
... Seafloor Spreading Mid-Ocean Ridges Mid-ocean ridges are underwater mountain chains that run through Earth’s ocean basins. ...
... Seafloor Spreading Mid-Ocean Ridges Mid-ocean ridges are underwater mountain chains that run through Earth’s ocean basins. ...
Theory of Plate Tectonics
... Japan, the Aleutian islands and the Eastern Caribbean islands of Martinique, St. Lucia and St. Vincent and the Grenadines are examples of islands formed through this type of plate boundary. The Himalaya Mountain Range is the best active example of this type of plate boundary. The Appalachian Mountai ...
... Japan, the Aleutian islands and the Eastern Caribbean islands of Martinique, St. Lucia and St. Vincent and the Grenadines are examples of islands formed through this type of plate boundary. The Himalaya Mountain Range is the best active example of this type of plate boundary. The Appalachian Mountai ...
11.11 The Earth`s tectonic plates (2 pages)
... Convergent boundaries (shown by ) occur when two plates are colliding. One plate often gets pushed under another. The plate on top buckles forming mountains. If the plates meet under the oceans, then there will be islands instead of mountains, and there will be a deep ocean mountains or islands tren ...
... Convergent boundaries (shown by ) occur when two plates are colliding. One plate often gets pushed under another. The plate on top buckles forming mountains. If the plates meet under the oceans, then there will be islands instead of mountains, and there will be a deep ocean mountains or islands tren ...
Supplemental Earth Science Review Questions
... 8. Which of the following is not evidence of tectonic plate movement? A. The pattern of the magnetic striping is the same on both sides of the Mid-Atlantic Ridge. B. Rock samples taken near the Mid-Atlantic Ridge are much younger than those taken near the west coast of Africa and the east coast of S ...
... 8. Which of the following is not evidence of tectonic plate movement? A. The pattern of the magnetic striping is the same on both sides of the Mid-Atlantic Ridge. B. Rock samples taken near the Mid-Atlantic Ridge are much younger than those taken near the west coast of Africa and the east coast of S ...
subduction subduction
... Thick accumulations of limestone. Thin sandstones and shales. Slow rate of deposition of detrital rocks. No volcanoes, no metamorphism, no folding of rock layers. Interbedded limestone, dolostone, and shale Niagara Gorge, NY ...
... Thick accumulations of limestone. Thin sandstones and shales. Slow rate of deposition of detrital rocks. No volcanoes, no metamorphism, no folding of rock layers. Interbedded limestone, dolostone, and shale Niagara Gorge, NY ...
Continental Drift
... – Forms ocean trench (subduction) – Magma forms island arc (Example: Japan) ...
... – Forms ocean trench (subduction) – Magma forms island arc (Example: Japan) ...
Unit 6.2 Notes File
... • When the leading edge of a plate near a ______________________________ _______________ cools it becomes _______________ and eventually begins to _______________ back into the _______________. As this leading edge is _______________ (sinking), it pulls the rest of the plate behind it downward into ...
... • When the leading edge of a plate near a ______________________________ _______________ cools it becomes _______________ and eventually begins to _______________ back into the _______________. As this leading edge is _______________ (sinking), it pulls the rest of the plate behind it downward into ...
Oceanic Crust
... Ocean-Ocean Plate Collision • When two oceanic plates collide, one runs over the other which causes it to sink into the mantle forming a subduction zone. • The subducting plate is bent downward to form a very deep depression in the ocean floor called a trench. • The world’s deepest parts of the oce ...
... Ocean-Ocean Plate Collision • When two oceanic plates collide, one runs over the other which causes it to sink into the mantle forming a subduction zone. • The subducting plate is bent downward to form a very deep depression in the ocean floor called a trench. • The world’s deepest parts of the oce ...
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year. A trench marks the position at which the flexed, subducting slab begins to descend beneath another lithospheric slab. Trenches are generally parallel to a volcanic island arc, and about 200 km (120 mi) from a volcanic arc. Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km2/yr.