Plate Tectonics
... break up about 200 million years ago. • Continents "drifted" to their present positions. ...
... break up about 200 million years ago. • Continents "drifted" to their present positions. ...
3_GC1_Plates2_09
... Slab pull-Ridge push • Ridge push – The higher elevation of the MOR pushes the adjacent lithosphere away. • Slab-pull – Once an oceanic plate begins to subduct, it pulls the rest of the plate with it • Plates may be slowed or hastened by convection in asthenosphere ...
... Slab pull-Ridge push • Ridge push – The higher elevation of the MOR pushes the adjacent lithosphere away. • Slab-pull – Once an oceanic plate begins to subduct, it pulls the rest of the plate with it • Plates may be slowed or hastened by convection in asthenosphere ...
File
... Describe Alfred Wegener’s theory of continental drift. Be specific and very detailed! About 225 million years ago, all the continents were one huge supercontinent, called Pangaea. Pangaea split and the continents drifted into their current positions. Describe all the types of evidence that supports ...
... Describe Alfred Wegener’s theory of continental drift. Be specific and very detailed! About 225 million years ago, all the continents were one huge supercontinent, called Pangaea. Pangaea split and the continents drifted into their current positions. Describe all the types of evidence that supports ...
Tectonic Plates Supplemental PowerPoint Presentation
... Plates When the plates move, it creates stress on the earth’s crust and causes the deformation of rocks and the earth’s crust. Can you think of any examples of these deformations? ...
... Plates When the plates move, it creates stress on the earth’s crust and causes the deformation of rocks and the earth’s crust. Can you think of any examples of these deformations? ...
Plate tectonics and Volcanoes
... pushes an oceanic plate toward the trench at the subduction zone. ...
... pushes an oceanic plate toward the trench at the subduction zone. ...
Lab 3 Presentation slides
... • Subduction of one oceanic plate beneath another • Older, colder plate is subducted under younger, warmer one • Associated with deep trenches and volcanic island arcs that are parallel to the trench e.g., Tonga, Aleutians Ocean-Continent Convergence • Subduction of more dense oceanic plate beneath ...
... • Subduction of one oceanic plate beneath another • Older, colder plate is subducted under younger, warmer one • Associated with deep trenches and volcanic island arcs that are parallel to the trench e.g., Tonga, Aleutians Ocean-Continent Convergence • Subduction of more dense oceanic plate beneath ...
Computer model shows continents sometimes push
... South Eastern Australia as having been formed by the collision of an exotic terrane (VanDieland) in the Silurian migrating parallel to the plate boundary and period over 400 million years ago. We see evidence for a orthogonally to the convergence direction. We find swirling pattern in the geological ...
... South Eastern Australia as having been formed by the collision of an exotic terrane (VanDieland) in the Silurian migrating parallel to the plate boundary and period over 400 million years ago. We see evidence for a orthogonally to the convergence direction. We find swirling pattern in the geological ...
Abstract Title - SWISS GEOSCIENCE MEETINGs
... and marker-in-cell numerical technique the impact of slab age, convergence rate and phase transitions onto this complex geological process. In contrast to previous studies we constructed fully dynamic coupled mineralogicalthermomechanical model where forced subduction of a 700 km long oceanic plate ...
... and marker-in-cell numerical technique the impact of slab age, convergence rate and phase transitions onto this complex geological process. In contrast to previous studies we constructed fully dynamic coupled mineralogicalthermomechanical model where forced subduction of a 700 km long oceanic plate ...
Earth`s 3 Layers 2 Types of Crust 2 Mantle Regions 2 Core Regions
... 1. The main source of downward convection flow in the mantle is called ____. a. ridge-pull c. slab-push b. slab-pull d. ridge-push 2. The downward sliding characteristic of ridge-push is the result of ____. a. gravity c. paleomagnetism b. uneven heat distribution d. continental rifting 3. The therma ...
... 1. The main source of downward convection flow in the mantle is called ____. a. ridge-pull c. slab-push b. slab-pull d. ridge-push 2. The downward sliding characteristic of ridge-push is the result of ____. a. gravity c. paleomagnetism b. uneven heat distribution d. continental rifting 3. The therma ...
Guided Notes on the Theory of Plate Tectonics
... movement is caused by the Earth’s internal heat. ...
... movement is caused by the Earth’s internal heat. ...
Plate Tectonics Review Worksheet
... 4. Two pieces of evidence for plate tectonics? Locations of earthquakes and volcanoes show the plate boundaries and ocean floor features. 5. What are the layers of the earth? Inner core – Iron Fe, outer core, mantle, crust – oxygen O and silicone ...
... 4. Two pieces of evidence for plate tectonics? Locations of earthquakes and volcanoes show the plate boundaries and ocean floor features. 5. What are the layers of the earth? Inner core – Iron Fe, outer core, mantle, crust – oxygen O and silicone ...
Plate Tectonics II - Clark Science Center
... Composed of sediment scraped off down-going plate Can be uplifted eventually if subduction leads to continentcontinent collision ...
... Composed of sediment scraped off down-going plate Can be uplifted eventually if subduction leads to continentcontinent collision ...
Seafloor Spreading
... Younger Rocks are found near the rift and older rocks are found near the continents ...
... Younger Rocks are found near the rift and older rocks are found near the continents ...
8_Ocean126_2006
... Conspicuous features of passive (tectonically inactive) margins so rare in the Pacific ...
... Conspicuous features of passive (tectonically inactive) margins so rare in the Pacific ...
Seismic structure of the European crust and upper mantle based on
... Some hitherto unidentified features, such as the Adria microplate, naturally emerge from the smooth starting model. Subducting slabs, slab detachments, ancient suture zones, continental rifts and back-arc basins are well resolved. For anelastic structure, we find an anti-correlation between shear wa ...
... Some hitherto unidentified features, such as the Adria microplate, naturally emerge from the smooth starting model. Subducting slabs, slab detachments, ancient suture zones, continental rifts and back-arc basins are well resolved. For anelastic structure, we find an anti-correlation between shear wa ...
10 Things to Know About Plate Tectonics
... 2. Movement occurs because of convection currents in the asthenosphere, which move the lithosphere on top. Mantle heats up as it approaches the core, so it rises to the top, where it cools and cycles back down toward the core, and so on and so forth. 3. Divergent plate boundaries – two plates moving ...
... 2. Movement occurs because of convection currents in the asthenosphere, which move the lithosphere on top. Mantle heats up as it approaches the core, so it rises to the top, where it cools and cycles back down toward the core, and so on and so forth. 3. Divergent plate boundaries – two plates moving ...
Name: :____________Per:___ Plate Tectonics Test 1. Who was the
... 3. Heated material expands and rises, then cools. As it cools, it becomes denser and falls. This circular movement of material is called _ a. conduction b. radiation c. convection currents d. thermodynamics 4. The theory that states that the continents were once connected but drifted apart over time ...
... 3. Heated material expands and rises, then cools. As it cools, it becomes denser and falls. This circular movement of material is called _ a. conduction b. radiation c. convection currents d. thermodynamics 4. The theory that states that the continents were once connected but drifted apart over time ...
Continental Drift Hypothesis - states that the continents had once
... Plate Tectonics - the theory that proposes that Earth’s outer shell consists of individual plates that interact in various ways and thereby produce earthquakes, volcanoes, mountains, and the crust itself. Plate - one of numerous rigid sections of the lithosphere that move as a unit over the material ...
... Plate Tectonics - the theory that proposes that Earth’s outer shell consists of individual plates that interact in various ways and thereby produce earthquakes, volcanoes, mountains, and the crust itself. Plate - one of numerous rigid sections of the lithosphere that move as a unit over the material ...
File
... Plate Movement O occurs when one oceanic plate is forced down into the mantle beneath a second plate ...
... Plate Movement O occurs when one oceanic plate is forced down into the mantle beneath a second plate ...
RULES OF THUMB (081312)
... o The push from the encircling ridges "cancels out". • Plates that are not driven by ridge push or slab pull do not move (Caribbean plate, Scotia plate). • In all cases plate motion can be understood and predicted by "balancing the forces" that drive and resist plate motion (driving: slab pull & rid ...
... o The push from the encircling ridges "cancels out". • Plates that are not driven by ridge push or slab pull do not move (Caribbean plate, Scotia plate). • In all cases plate motion can be understood and predicted by "balancing the forces" that drive and resist plate motion (driving: slab pull & rid ...
Plate Tectonics Crossword
... Alfred _______ is credited with developing the theory of continental drift. ...
... Alfred _______ is credited with developing the theory of continental drift. ...
Plate Tectonics Powerpoint by jnb 160
... The outermost part of the Earth is made of two layers • Lithosphere – the crust and mantle • Asthenosphere – the viscous part of the mantle ...
... The outermost part of the Earth is made of two layers • Lithosphere – the crust and mantle • Asthenosphere – the viscous part of the mantle ...
EGU2016-8321 - CO Meeting Organizer
... rate, with slab rotation towards a near-vertical dip angle at depths below ca. 500 km at very high convergence rate. (4) Local isostasy is not satisfied at the convergent margins as evidenced by strong free air gravity anomalies of positive and negative signs. However, near-isostatic equilibrium may ...
... rate, with slab rotation towards a near-vertical dip angle at depths below ca. 500 km at very high convergence rate. (4) Local isostasy is not satisfied at the convergent margins as evidenced by strong free air gravity anomalies of positive and negative signs. However, near-isostatic equilibrium may ...
PPT - Chapter 2: Plate Tectonics & The Ocean Floor
... • Mid-ocean ridges have oceanic rises and oceanic ridges. – Oceanic rises gently sloping due to a fast rate of spreading. Ex: East Pacific ...
... • Mid-ocean ridges have oceanic rises and oceanic ridges. – Oceanic rises gently sloping due to a fast rate of spreading. Ex: East Pacific ...
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.