Chapter 1: The atom
... blocked in reaching Antarctica. The global overturning circulation shifts heat around the Earth, and would have been different in the past because it would have been unable to reach the Pacific Ocean between Australia and Antarctica. 12 Oceanic crust is dark coloured, dense and low in silica and lig ...
... blocked in reaching Antarctica. The global overturning circulation shifts heat around the Earth, and would have been different in the past because it would have been unable to reach the Pacific Ocean between Australia and Antarctica. 12 Oceanic crust is dark coloured, dense and low in silica and lig ...
UNIT 10 Plate Tectonics Study Guide
... estimated that this ooze generally accumulates at rate of 3 mm/1,000 years). - The continental crust rocks can be billions of years old while the oldest oceanic crust is less than 200 million years old. - This huge age difference can be explained only if Earth’s oceanic crust is constantly being des ...
... estimated that this ooze generally accumulates at rate of 3 mm/1,000 years). - The continental crust rocks can be billions of years old while the oldest oceanic crust is less than 200 million years old. - This huge age difference can be explained only if Earth’s oceanic crust is constantly being des ...
Plate Tectonics
... Oceanic crust is generated by igneous activity at mid-ocean ridges and eventually is recycled back into the mantle at subduction zone (due to its higher density) ...
... Oceanic crust is generated by igneous activity at mid-ocean ridges and eventually is recycled back into the mantle at subduction zone (due to its higher density) ...
Plate Tectonics Web Activity Solns
... At a divergent plate boundary the plates are moving AWAY FROM EACH OTHER. As this occurs MAGMA rises up in the space created between the DIVERGING plates. This MAGMA then solidifies to create new crust. The new crust is thin and as a result is PUSHED upwards by the HOT magma below it. This creates a ...
... At a divergent plate boundary the plates are moving AWAY FROM EACH OTHER. As this occurs MAGMA rises up in the space created between the DIVERGING plates. This MAGMA then solidifies to create new crust. The new crust is thin and as a result is PUSHED upwards by the HOT magma below it. This creates a ...
Nazca slab retreat versus compressional deformation in the central
... Even during the last 26 My, rapid lowering of mean Andcan elevation is not observed. Thus the comoressional events should be mainbv related to variations in the boundary forces. In some cases. these vat&ions in the boundary forces are de&ted by variations in the Andwn cokrgence rate, Le. by far-fiel ...
... Even during the last 26 My, rapid lowering of mean Andcan elevation is not observed. Thus the comoressional events should be mainbv related to variations in the boundary forces. In some cases. these vat&ions in the boundary forces are de&ted by variations in the Andwn cokrgence rate, Le. by far-fiel ...
File - The Building Blocks For Learning
... 2. The lithosphere moves over the asthenosphere. 3. An example of this is sea floor spreading. 4. The heat from the core heats the mantle causing convection currents 5. These convection currents move the lithosphere over the asthenosphere. 6. New crust forms from the material in the mantle/asthenosp ...
... 2. The lithosphere moves over the asthenosphere. 3. An example of this is sea floor spreading. 4. The heat from the core heats the mantle causing convection currents 5. These convection currents move the lithosphere over the asthenosphere. 6. New crust forms from the material in the mantle/asthenosp ...
PLATE BOUNDARIES AND CALIFORNIA
... strike-slip fault) between the N.A. Plate and the Pacific Plate. It extends all the way from Cape Mendocino in the north to the Salton Sea in the south. ...
... strike-slip fault) between the N.A. Plate and the Pacific Plate. It extends all the way from Cape Mendocino in the north to the Salton Sea in the south. ...
Chapter 5
... Interactions between the North American Plate and the Pacific Plate produce California’s mountains and basins and cause earthquakes and volcanoes. ...
... Interactions between the North American Plate and the Pacific Plate produce California’s mountains and basins and cause earthquakes and volcanoes. ...
PLATE BOUNDARIES AND CALIFORNIA
... strike-slip fault) between the N.A. Plate and the Pacific Plate. It extends all the way from Cape Mendocino in the north to the Salton Sea in the south. ...
... strike-slip fault) between the N.A. Plate and the Pacific Plate. It extends all the way from Cape Mendocino in the north to the Salton Sea in the south. ...
Seafloor spreading and recycling of oceanic crust
... A scientist by the name of Harry Hess theorized that mid-ocean ridges mark structurally weak zones 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 r ...
... A scientist by the name of Harry Hess theorized that mid-ocean ridges mark structurally weak zones 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 r ...
7-3 Summary
... where two plates separate. • When the seafloor spreads at a midocean ridge, lava erupts, cools, and forms new oceanic crust. • Divergent plate boundaries can also exist in the middle of a continent, where they pull continents apart and form rift valleys. ...
... where two plates separate. • When the seafloor spreads at a midocean ridge, lava erupts, cools, and forms new oceanic crust. • Divergent plate boundaries can also exist in the middle of a continent, where they pull continents apart and form rift valleys. ...
Mass balance related to UHP metamorphism in subduction zones
... complemented by ridge and plume volcanism, the higher recycling rate leads to reasonable concentrations in MORB (0.27 wt% H2O, compare to 0.2-0.4 wt% from geochemistry) and plume basalts (1.1% H2O, compare to 0.6-1.0 wt% from geochemistry) Whether surface+crust CO2 is in secular equilibrium in the p ...
... complemented by ridge and plume volcanism, the higher recycling rate leads to reasonable concentrations in MORB (0.27 wt% H2O, compare to 0.2-0.4 wt% from geochemistry) and plume basalts (1.1% H2O, compare to 0.6-1.0 wt% from geochemistry) Whether surface+crust CO2 is in secular equilibrium in the p ...
All About Plate Tectonics: Earth`s Plates and Continental Drift
... – What is the theory of plate tectonics and how does it work? – What two theories help make up the theory of plate tectonics? – What is continental drift and sea floor spreading? – What happens when the plates crash together, pull apart, and slide against each other? ...
... – What is the theory of plate tectonics and how does it work? – What two theories help make up the theory of plate tectonics? – What is continental drift and sea floor spreading? – What happens when the plates crash together, pull apart, and slide against each other? ...
Driving mechanism and 3-D circulation of plate tectonics
... ago. Secular cooling of the upper mantle by 75 °C or 100 °C per b.y. is likely (Anderson, 2007; Hamilton, 2007). Plates commonly are visualized as being driven by wholemantle convection in a mostly unfractionated mantle: bottomheated hot mantle rises beneath ridges, diverges, carries lithosphere pas ...
... ago. Secular cooling of the upper mantle by 75 °C or 100 °C per b.y. is likely (Anderson, 2007; Hamilton, 2007). Plates commonly are visualized as being driven by wholemantle convection in a mostly unfractionated mantle: bottomheated hot mantle rises beneath ridges, diverges, carries lithosphere pas ...
Eighth Grade Science QUARTERLY ASSESSMENT
... along a fault. Tremendous amounts of energy are released in seismic waves when an earthquake occurs. Identify the locations of the earthquake’s focus and epicenter relative to the location of the initial movement. Describe how the seismic waves travel from the location of the movement to the earth’s ...
... along a fault. Tremendous amounts of energy are released in seismic waves when an earthquake occurs. Identify the locations of the earthquake’s focus and epicenter relative to the location of the initial movement. Describe how the seismic waves travel from the location of the movement to the earth’s ...
The Pacific Ring of Fire
... In the 1960s, Canadian J. Tuzo Wilson got people interested in continental drift again. He recognized that hot spots could form deep in the mantle, and that currents could circulate above these hot spots, just as boiling water swirls in a heated pot on a stove. These convection currents might provid ...
... In the 1960s, Canadian J. Tuzo Wilson got people interested in continental drift again. He recognized that hot spots could form deep in the mantle, and that currents could circulate above these hot spots, just as boiling water swirls in a heated pot on a stove. These convection currents might provid ...
Plate Tectonics Earth Layers
... b. Lower mantle is far too viscous (thick) to convect fast enough to remove this heat. Thus, base of mantle gets extra hot. Eventually this rock softens to where it can slowly flows to form large pods of heated, less dense soft rock at the base of the mantle. Analogy: when you try to heat up cold st ...
... b. Lower mantle is far too viscous (thick) to convect fast enough to remove this heat. Thus, base of mantle gets extra hot. Eventually this rock softens to where it can slowly flows to form large pods of heated, less dense soft rock at the base of the mantle. Analogy: when you try to heat up cold st ...
Notes: Seafloor Spreading In the early 1900`s, the
... Deep-sea trenches are elongated, arc-shaped ____________________ in the seafloor that are several kilometers ____________________ that the abyssal plain. They are the ____________________ part of the oceans. Many lie near _______________ islands and volcanic island chains Abyssal Plain: the ...
... Deep-sea trenches are elongated, arc-shaped ____________________ in the seafloor that are several kilometers ____________________ that the abyssal plain. They are the ____________________ part of the oceans. Many lie near _______________ islands and volcanic island chains Abyssal Plain: the ...
ADVANCED LEVEL GEOGRAPHY
... (2) Convergent destructive plate boundaries : -- Zone of collision The plates move together, causing lithosphere to be consumed by the mantle, as it descends beneath an overriding plates. -- Just as new ocean floor is being formed in some places, so in others it is being destroyed. -- Some plates co ...
... (2) Convergent destructive plate boundaries : -- Zone of collision The plates move together, causing lithosphere to be consumed by the mantle, as it descends beneath an overriding plates. -- Just as new ocean floor is being formed in some places, so in others it is being destroyed. -- Some plates co ...
Plate Tectonics
... At a constructive plate boundary, two plates move apart. As the two plates move apart, magma rises up to fill the gap. This causes volcanoes at this type of boundary. However, since the magma can escape easily at the surface the volcano does not erupt with much force. Earthquakes are also found at c ...
... At a constructive plate boundary, two plates move apart. As the two plates move apart, magma rises up to fill the gap. This causes volcanoes at this type of boundary. However, since the magma can escape easily at the surface the volcano does not erupt with much force. Earthquakes are also found at c ...
intro plate tec
... At a constructive plate boundary, two plates move apart. As the two plates move apart, magma rises up to fill the gap. This causes volcanoes at this type of boundary. However, since the magma can escape easily at the surface the volcano does not erupt with much force. Earthquakes are also found at c ...
... At a constructive plate boundary, two plates move apart. As the two plates move apart, magma rises up to fill the gap. This causes volcanoes at this type of boundary. However, since the magma can escape easily at the surface the volcano does not erupt with much force. Earthquakes are also found at c ...
Powerpoint
... San Andreas into Gulf of California? Related to heating and thermal weakening of the crust? Timing, T structure of crust. 3. How does/did the system propagate? From south to north, but mechanics are unknown. 4. How does locus of faulting change through time? Not clear if it follows the western bound ...
... San Andreas into Gulf of California? Related to heating and thermal weakening of the crust? Timing, T structure of crust. 3. How does/did the system propagate? From south to north, but mechanics are unknown. 4. How does locus of faulting change through time? Not clear if it follows the western bound ...
Document
... Los Angeles lies on the Pacific plate. San Jose lies on the North American plate. How will the distance between the two cities change over millions of years? Over millions of years the distance between Los Angeles and San Jose will increase as the Pacific plate moves northwest relative to the North ...
... Los Angeles lies on the Pacific plate. San Jose lies on the North American plate. How will the distance between the two cities change over millions of years? Over millions of years the distance between Los Angeles and San Jose will increase as the Pacific plate moves northwest relative to the North ...
PGC-Abstract_CParkin
... optimise seismic penetration at long-offsets and wide-angles. Magnetics, bathymetry and gravity data were acquired as well as conventional, near offset seismic data, using a 3km multichannel streamer. The wide-angle OBS data has allowed the crustal thickness to be measured along the flowline and str ...
... optimise seismic penetration at long-offsets and wide-angles. Magnetics, bathymetry and gravity data were acquired as well as conventional, near offset seismic data, using a 3km multichannel streamer. The wide-angle OBS data has allowed the crustal thickness to be measured along the flowline and str ...
Plate Tectonics Foldable Plate Tectonics Foldable
... On the inside, draw a diagram for each of the three types of convergent boundaries (oceanicoceanic, oceanic-continental, and continental-continental). Label each type of crust. Show major features of convergent boundaries such as subduction zones, deep ocean trenches, and volcanic arcs. Also label t ...
... On the inside, draw a diagram for each of the three types of convergent boundaries (oceanicoceanic, oceanic-continental, and continental-continental). Label each type of crust. Show major features of convergent boundaries such as subduction zones, deep ocean trenches, and volcanic arcs. Also label 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.