As the continental shelf gets steeper the water depth
... 2. The ocean floors are in constant motion because they are on top of the plates. 3. There are convection currents beneath all the plates. This causes them to be in constant motion. Convection currents: are caused by the movement of lava in the mantle. The lava is moving from heated zones to cooler ...
... 2. The ocean floors are in constant motion because they are on top of the plates. 3. There are convection currents beneath all the plates. This causes them to be in constant motion. Convection currents: are caused by the movement of lava in the mantle. The lava is moving from heated zones to cooler ...
Plate Tectonics Test Study Guide Continental Plates (CP): Less
... Continental Plates (CP): Less dense than oceanic plates Oceanic Plates (OP): Heavier than continental plates Strike-Slip Boundary: two plates grind together and slip past each other horizontally. Subduct: to dive down Trench: deep places on the ocean floor where the edge of one plate subducts under ...
... Continental Plates (CP): Less dense than oceanic plates Oceanic Plates (OP): Heavier than continental plates Strike-Slip Boundary: two plates grind together and slip past each other horizontally. Subduct: to dive down Trench: deep places on the ocean floor where the edge of one plate subducts under ...
I. Abstract II. Geological background III. Thermo
... Numerous terrestrial redbed basins formed in an extensional environment during the Late Cretaceous - Cenozoic. ...
... Numerous terrestrial redbed basins formed in an extensional environment during the Late Cretaceous - Cenozoic. ...
File
... [Extension] Read the information below and answer the questions in sentences in your jotter. Oceanic Lithosphere The rigid, outermost layer of the Earth comprising the crust and upper mantle is called the lithosphere. New oceanic lithosphere forms through volcanism in the form of fissures at mid-oc ...
... [Extension] Read the information below and answer the questions in sentences in your jotter. Oceanic Lithosphere The rigid, outermost layer of the Earth comprising the crust and upper mantle is called the lithosphere. New oceanic lithosphere forms through volcanism in the form of fissures at mid-oc ...
Evolution and diversity of subduction zones controlled by slab width
... Subducting slabs provide the main driving force for plate motion and flow in the Earth’s mantle1–4, and geodynamic, seismic and geochemical studies offer insight into slab dynamics and subductioninduced flow3–15. Most previous geodynamic studies treat subduction zones as either infinite in trench-pa ...
... Subducting slabs provide the main driving force for plate motion and flow in the Earth’s mantle1–4, and geodynamic, seismic and geochemical studies offer insight into slab dynamics and subductioninduced flow3–15. Most previous geodynamic studies treat subduction zones as either infinite in trench-pa ...
Geodynamics of the Mexican Subduction Zone: constraints from
... with ~1 to 3 Ma old oceanic crust off the west coast of Baja California. A gap in the slab must have formed to allow the formation of the Gulf of California rift. Our model show the evolution of this process time and space, which can be related to geologic events in the upper plate. The model show t ...
... with ~1 to 3 Ma old oceanic crust off the west coast of Baja California. A gap in the slab must have formed to allow the formation of the Gulf of California rift. Our model show the evolution of this process time and space, which can be related to geologic events in the upper plate. The model show t ...
Edible Tectonics
... oceanic crust on another plate, one plate will slide under the other. A deep oceanic trench forms at the boundary. The molten rock of the plate that went under rises through the overriding plate, erupting on the ...
... oceanic crust on another plate, one plate will slide under the other. A deep oceanic trench forms at the boundary. The molten rock of the plate that went under rises through the overriding plate, erupting on the ...
The Layer`s Of The Earth! - Mrs. V. Murphy`s Science Class
... oceanic crust. The red coloring shows the youngest ages, while the dark blue shows the oldest ages (around 200 million years old). ...
... oceanic crust. The red coloring shows the youngest ages, while the dark blue shows the oldest ages (around 200 million years old). ...
The Theory of Plate Tectonics
... convergent, divergent, and transform. convergent boundary: formed by the collision of two lithospheric plates. Plate ...
... convergent, divergent, and transform. convergent boundary: formed by the collision of two lithospheric plates. Plate ...
d45 plate boundaries ppt
... • The map on p D42 shows the locations of earthquakes and volcanoes on Earth. • Many of the most active volcanoes are on the edges of the Pacific Ocean, the “Ring of Fire”. • The theory of plate tectonics helps explain this • CHALLENGE QUESTION: How does plate tectonics explain the locations of eart ...
... • The map on p D42 shows the locations of earthquakes and volcanoes on Earth. • Many of the most active volcanoes are on the edges of the Pacific Ocean, the “Ring of Fire”. • The theory of plate tectonics helps explain this • CHALLENGE QUESTION: How does plate tectonics explain the locations of eart ...
of the ocean floor? - Bakersfield College
... • thinner and more dense plate subducts • subducted plates melt (160 km) below the surface, and magma rises • EQ’s occur along the subduction zone, and magma plumes rise • typically, the older plate will subduct (more dense) beneath younger plate material ...
... • thinner and more dense plate subducts • subducted plates melt (160 km) below the surface, and magma rises • EQ’s occur along the subduction zone, and magma plumes rise • typically, the older plate will subduct (more dense) beneath younger plate material ...
V.V. Beloussov (1907-1990) Famous opponent of plate tectonics
... Marine magnetic anomalies are not uniform and thickness not proportional to anomaly age (but he doesn’t know about magnetic “skewness” due to interaction with earth’s field) ...
... Marine magnetic anomalies are not uniform and thickness not proportional to anomaly age (but he doesn’t know about magnetic “skewness” due to interaction with earth’s field) ...
File
... Mountain ranges (_______________________________), volcanoes (Mount St. Helen’s), trenches (Mariana Trench), earthquakes, and __________________zones all occur at convergent plate boundaries. ...
... Mountain ranges (_______________________________), volcanoes (Mount St. Helen’s), trenches (Mariana Trench), earthquakes, and __________________zones all occur at convergent plate boundaries. ...
Unit 2 Test
... Where the mid-ocean ridge rises above sea level Mid-ocean ridges Crust & upper mantle that “floats” on the asthenosphere Arctic, Atlantic, Indian, Pacific, Southern Semi-solid layer of silicon, magnesium & iron, below the crust Divergent plate boundary Where youngest seafloor rocks are found Sea flo ...
... Where the mid-ocean ridge rises above sea level Mid-ocean ridges Crust & upper mantle that “floats” on the asthenosphere Arctic, Atlantic, Indian, Pacific, Southern Semi-solid layer of silicon, magnesium & iron, below the crust Divergent plate boundary Where youngest seafloor rocks are found Sea flo ...
Notes 9-4 Sea Floor Spreading Name p. 331
... themselves over time. The rock that makes up the ocean floor lies in a pattern of magnetized “stripes”. These hold a record of _____________________ in the magnetic field. Molten material contains _____________, which lined up in the direction of Earth’s magnetic poles when it cooled. This locked in ...
... themselves over time. The rock that makes up the ocean floor lies in a pattern of magnetized “stripes”. These hold a record of _____________________ in the magnetic field. Molten material contains _____________, which lined up in the direction of Earth’s magnetic poles when it cooled. This locked in ...
The Structure of the Earth and Plate Tectonics
... • The Crust is solid and made of silica (quartz) • Silica is also part of what glass is made out of. • The Crust is about Crust 1% of Earth’s volume. ...
... • The Crust is solid and made of silica (quartz) • Silica is also part of what glass is made out of. • The Crust is about Crust 1% of Earth’s volume. ...
Review / Study Sheet for the next Big Test: Layers
... Convergent (con – connect) boundaries cause mountains to rise slightly or create volcanic islands in some cases Convergent Volcanic islands are formed from plates colliding together and magma coming up to the water surface – convergent boundaries. Earthquake – there are earthquakes every single time ...
... Convergent (con – connect) boundaries cause mountains to rise slightly or create volcanic islands in some cases Convergent Volcanic islands are formed from plates colliding together and magma coming up to the water surface – convergent boundaries. Earthquake – there are earthquakes every single time ...
Science Curriculum Map
... 8.9 Earth and space. The student knows that natural events can impact Earth systems. The student is expected to: (A) describe the historical development of evidence that supports plate tectonic theory; (B) relate plate tectonics to the formation of crustal features; and (C) interpret topographic map ...
... 8.9 Earth and space. The student knows that natural events can impact Earth systems. The student is expected to: (A) describe the historical development of evidence that supports plate tectonic theory; (B) relate plate tectonics to the formation of crustal features; and (C) interpret topographic map ...
Ocean Features PPT
... active islands that’s parallel to deepsea trenches formed by subduction zones. ...
... active islands that’s parallel to deepsea trenches formed by subduction zones. ...
Document
... somewhere material must be removed from the surface. • It turns out that old ocean floor is “subducted” into the mantle at subduction zones. ...
... somewhere material must be removed from the surface. • It turns out that old ocean floor is “subducted” into the mantle at subduction zones. ...
plate boundaries and interactions worksheet
... The earth’s lithosphere is broken into multiple pieces, tectonic plates. According to the Theory of Plate Tectonics, these tectonic plates are in constant motion due to convection of the upper mantle. The points where two plates meet are referred to as plate boundaries. Different types of plate boun ...
... The earth’s lithosphere is broken into multiple pieces, tectonic plates. According to the Theory of Plate Tectonics, these tectonic plates are in constant motion due to convection of the upper mantle. The points where two plates meet are referred to as plate boundaries. Different types of plate boun ...
Continental - itslearning
... than 2.5 cm/yr), and the East Pacific Rise near Easter Island, in the South Pacific about 3,400 km west of Chile, has the fastest rate (more than 15 cm/yr). ...
... than 2.5 cm/yr), and the East Pacific Rise near Easter Island, in the South Pacific about 3,400 km west of Chile, has the fastest rate (more than 15 cm/yr). ...
Volcanoes, Earthquakes, Plates after
... • 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 worlds deepest parts of the ocean are found along trenches. – ...
... • 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 worlds deepest parts of the ocean are found along trenches. – ...
7-3 Lecture PDF
... Convection currents in the mantle produce a force that cause motion called basal drag. The force of ridge push causes the plates to be pushed away from each other at mid ocean ridges. When a plate sinks below another plate, it pulls on the rest of the plate, exerting a force called slab pull. ...
... Convection currents in the mantle produce a force that cause motion called basal drag. The force of ridge push causes the plates to be pushed away from each other at mid ocean ridges. When a plate sinks below another plate, it pulls on the rest of the plate, exerting a force called slab pull. ...
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.