1. Continental drift? What evidence did Alfred Wagner use to
... Wagner's theory, and what was their evidence? They were Arthur Holmes and Harry Hess. Their evidence was that thermal convection in the earth’s mantle could cause continents to move, but they suggested that the continents didn’t move but were by larger pieces of the earth’s crust called tectonic pla ...
... Wagner's theory, and what was their evidence? They were Arthur Holmes and Harry Hess. Their evidence was that thermal convection in the earth’s mantle could cause continents to move, but they suggested that the continents didn’t move but were by larger pieces of the earth’s crust called tectonic pla ...
effects of ridge subduction on upper plate deformations: the juan
... experiments closed to that used in Funiciello et al. (2003) and Martinod et al. (2005), to simulate the subduction of an oceanic lithosphere including an oceanic ridge, perpendicular to the trench, below a continental plate. Lithospheric plates are modelled using silicone putty initially floating ab ...
... experiments closed to that used in Funiciello et al. (2003) and Martinod et al. (2005), to simulate the subduction of an oceanic lithosphere including an oceanic ridge, perpendicular to the trench, below a continental plate. Lithospheric plates are modelled using silicone putty initially floating ab ...
Chapter 23 The Ocean Floor
... • Sound signal is sent to the ocean floor and the time it takes to reach the ocean floor and return determines the depth ...
... • Sound signal is sent to the ocean floor and the time it takes to reach the ocean floor and return determines the depth ...
esss09 - 4J Blog Server
... • There are three types of plate boundaries. Each plate contains a combination of each of the three types. • Divergent boundaries are found where two of Earth’s plates move apart. • Convergent boundaries form where two plates move together. • Transform fault boundaries occur where two plates grind p ...
... • There are three types of plate boundaries. Each plate contains a combination of each of the three types. • Divergent boundaries are found where two of Earth’s plates move apart. • Convergent boundaries form where two plates move together. • Transform fault boundaries occur where two plates grind p ...
Plate Tectonics I
... The LITHOSPHERE plates are ~100 km thick, but rigid. The AESTHENOSPHERE is plastic (soft and deformable) and generally 200-400 km thick. ...
... The LITHOSPHERE plates are ~100 km thick, but rigid. The AESTHENOSPHERE is plastic (soft and deformable) and generally 200-400 km thick. ...
Plate Tectonics
... They are created when a mantle plume is super heated by the core and burns through the crust building a volcano In the case of an oceanic hotspot, the plate continues to move and the volcano moves off the hotspot, and becomes inactive and just an island. A new volcano will begin to form on the o ...
... They are created when a mantle plume is super heated by the core and burns through the crust building a volcano In the case of an oceanic hotspot, the plate continues to move and the volcano moves off the hotspot, and becomes inactive and just an island. A new volcano will begin to form on the o ...
Plate Boundaries
... Subduction zone Trench Area of melting Area of volcanism Arrows indicating direction of plate movement ...
... Subduction zone Trench Area of melting Area of volcanism Arrows indicating direction of plate movement ...
“I Can” – Plate Tectonics Objectives – Learning Target Analysis
... CAN has the section number(s) in the (1-5) book after it, so that you may find a bit more info to study if you need help with that topic E2.2A Describe the Earth’s principal sources of internal and external energy (radioactive decay, gravity, solar energy – also extraterrestrial impacts) – section 6 ...
... CAN has the section number(s) in the (1-5) book after it, so that you may find a bit more info to study if you need help with that topic E2.2A Describe the Earth’s principal sources of internal and external energy (radioactive decay, gravity, solar energy – also extraterrestrial impacts) – section 6 ...
Plate Tectonics - St John Brebeuf
... asthenosphere that extends down to around 220 kilometers depth. • Temperatures of the asthenosphere are extremely hot, and as a result, the rock is weak ("astheno-" means weak in Greek). • It will be effected by stress and bends in a plastic way. ...
... asthenosphere that extends down to around 220 kilometers depth. • Temperatures of the asthenosphere are extremely hot, and as a result, the rock is weak ("astheno-" means weak in Greek). • It will be effected by stress and bends in a plastic way. ...
File
... spreads, it pushes the continents further away. • The Pacific Ocean covers almost 1/3 of the planet, yet it’s shrinking! The Pacific is surrounded by many trenches. The deep-ocean trenches swallow more oceanic crust than the mid-ocean ridge can create. ...
... spreads, it pushes the continents further away. • The Pacific Ocean covers almost 1/3 of the planet, yet it’s shrinking! The Pacific is surrounded by many trenches. The deep-ocean trenches swallow more oceanic crust than the mid-ocean ridge can create. ...
Chapter 9 Plate Tectonics
... Oceanic Ridges and Seafloor Spreading _______________ valleys are deep faulted structures found along the axes of divergent plate boundaries. They can develop on the seafloor or on land. _______________ spreading produces new oceanic lithosphere. _______________ Rifts When spreading center ...
... Oceanic Ridges and Seafloor Spreading _______________ valleys are deep faulted structures found along the axes of divergent plate boundaries. They can develop on the seafloor or on land. _______________ spreading produces new oceanic lithosphere. _______________ Rifts When spreading center ...
Lecture 5 - Plate Tectonics and Rocks
... Carrying diamonds and other samples from Earth's mantle, this magma rises and erupts in small but violent volcanoes. Just beneath such volcanoes is a carrot-shaped "pipe" filled with volcanic rock, mantle fragments, and some embedded diamonds. The rock is called kimberlite after the city of Kimberle ...
... Carrying diamonds and other samples from Earth's mantle, this magma rises and erupts in small but violent volcanoes. Just beneath such volcanoes is a carrot-shaped "pipe" filled with volcanic rock, mantle fragments, and some embedded diamonds. The rock is called kimberlite after the city of Kimberle ...
How do ocean plates interact with each other?
... release of energy held in bound up plates. As that energy was released, the entire plate shook, resulting in the earthquake that you felt. However, that was on a Continental Plate. What happens when Oceanic Plates interact? Do you get a similar reaction, or is it much different. Today, you will be i ...
... release of energy held in bound up plates. As that energy was released, the entire plate shook, resulting in the earthquake that you felt. However, that was on a Continental Plate. What happens when Oceanic Plates interact? Do you get a similar reaction, or is it much different. Today, you will be i ...
Seismic Activity on the West Coast
... A tsunami is a wave train, or series of waves, generated in a body of water by an impulsive disturbance that vertically displaces the water ...
... A tsunami is a wave train, or series of waves, generated in a body of water by an impulsive disturbance that vertically displaces the water ...
EGU2016-1458 - CO Meeting Organizer
... unified the biological sciences with one grand vision. In the Earth Sciences, the description of the movement and deformation of the Earth’s outer layer has evolved from Continental Drift (1912) into Sea-Floor Spreading (1962) and then to the paradigm of Plate Tectonics in the mid-to-late 1960s. Pla ...
... unified the biological sciences with one grand vision. In the Earth Sciences, the description of the movement and deformation of the Earth’s outer layer has evolved from Continental Drift (1912) into Sea-Floor Spreading (1962) and then to the paradigm of Plate Tectonics in the mid-to-late 1960s. Pla ...
Types of Plate Boundaries Ridge Push and Slab Pull
... The edge of the subducting plate pulls the rest of the plate behind it down into the asthenosphere. Identify the characteristic (property) of the subducting lithosphere that causes this slab pull. ...
... The edge of the subducting plate pulls the rest of the plate behind it down into the asthenosphere. Identify the characteristic (property) of the subducting lithosphere that causes this slab pull. ...
Plate Tectonics - Gull Lake Community Schools
... If new crust is being created at the mid-ocean ridges, why isn’t the ...
... If new crust is being created at the mid-ocean ridges, why isn’t the ...
Earth’s History
... b. Oceanic plates are more dense then continental plates. c. Forms trenches and mountains Subduction Zone - the dense, leading edge of the oceanic plate actually pulls the rest of the plate into the asthenosphere ...
... b. Oceanic plates are more dense then continental plates. c. Forms trenches and mountains Subduction Zone - the dense, leading edge of the oceanic plate actually pulls the rest of the plate into the asthenosphere ...
Dynamic Ocean Floor
... • Longer and also higher then any other mountain range on any continent. • The ridges are home to Earth's highest mountains, and deepest canyons. • The shape of the mid-ocean ridge is controlled by the rate the plates move apart. ...
... • Longer and also higher then any other mountain range on any continent. • The ridges are home to Earth's highest mountains, and deepest canyons. • The shape of the mid-ocean ridge is controlled by the rate the plates move apart. ...
Earth`s Structure
... in constant motion. 12. Plate tectonics theory explains how ____________________________________, ___________________________________, and other geologic events occur. Plates and Boundaries 13. The Earth’s continents are constantly moving due to the motions of the _________________. 14. How does con ...
... in constant motion. 12. Plate tectonics theory explains how ____________________________________, ___________________________________, and other geologic events occur. Plates and Boundaries 13. The Earth’s continents are constantly moving due to the motions of the _________________. 14. How does con ...
Tectonic Plates Quiz
... e) A discrete layer in the mantle immediately below the crust. 3. Volcanoes and earthquakes are found along… a) all of the edges of all continents. c) some of the edges of all continents. b) all of the edges of some continents. d) some of the edges of some continents. 4. What is the principal cause ...
... e) A discrete layer in the mantle immediately below the crust. 3. Volcanoes and earthquakes are found along… a) all of the edges of all continents. c) some of the edges of all continents. b) all of the edges of some continents. d) some of the edges of some continents. 4. What is the principal cause ...
Plate Tectonics |Sample answer
... destroyed as it comes into contact with the magma. When two oceanic plates collide the older plate subducts and forms an ocean trench. The plate continues to subduct until it melts forming new magma which comes to the surface. Lava cools and solidifies on the ocean floor to build up to form island v ...
... destroyed as it comes into contact with the magma. When two oceanic plates collide the older plate subducts and forms an ocean trench. The plate continues to subduct until it melts forming new magma which comes to the surface. Lava cools and solidifies on the ocean floor to build up to form island v ...
Lecture Powerpoint 1-17
... Hydrothermal vents • 1977: discovered by Ballard and Grassle of the Woods Hole Oceanographic Institution – Chimneys – East Pacific Rise – 350 degrees Celsius ...
... Hydrothermal vents • 1977: discovered by Ballard and Grassle of the Woods Hole Oceanographic Institution – Chimneys – East Pacific Rise – 350 degrees Celsius ...
sea-floor spreading - Science with Ms. Flythe
... floor sinks beneath deep ocean trenches and back into mantle • As subduction occurs, crust closer to midocean ridge moves away from ridges and toward trench – Sea floor spreading and subduction work together • Move ocean floor like it’s a conveyor belt ...
... floor sinks beneath deep ocean trenches and back into mantle • As subduction occurs, crust closer to midocean ridge moves away from ridges and toward trench – Sea floor spreading and subduction work together • Move ocean floor like it’s a conveyor belt ...
File
... • East Africa may be the site of the Earth's next major ocean. Plate interactions in the region provide scientists an opportunity to study first hand how the Atlantic may have begun to form about 200 million years ago. Geologists believe that, if spreading continues, the three plates that meet at t ...
... • East Africa may be the site of the Earth's next major ocean. Plate interactions in the region provide scientists an opportunity to study first hand how the Atlantic may have begun to form about 200 million years ago. Geologists believe that, if spreading continues, the three plates that meet at t ...
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.