Ch. 16 PowerPoint
... height with the top at -1585 m and the ocean bottom at -3955 m. It is very small with a volume of 356 km3. The seamount is moderately elongated in a southeast, northwest direction with an azimuth of approximately 115?. The edges of the seamount are ...
... height with the top at -1585 m and the ocean bottom at -3955 m. It is very small with a volume of 356 km3. The seamount is moderately elongated in a southeast, northwest direction with an azimuth of approximately 115?. The edges of the seamount are ...
VEST `96, Plate Tectonics
... is what is called the “full spreading rate”, meaning that if you were standing on one side of the EPR, it would appear that the other side was moving away from you at 16-22 cm/year. The velocity of one plate, the half-spreading rate would be half of the full spreading rate, namely 8-11 cm/year. The ...
... is what is called the “full spreading rate”, meaning that if you were standing on one side of the EPR, it would appear that the other side was moving away from you at 16-22 cm/year. The velocity of one plate, the half-spreading rate would be half of the full spreading rate, namely 8-11 cm/year. The ...
Define and discuss on Isostatic Equilibrium Submitted by WWW
... because the material is eroded away, and it does not need to “ride” as low in the mantle. The eroded material is deposited as sediment on the adjacent thinner continental blocks, which increases their weight, and they then sink farther into the plastic asthenosphere. Areas that are tectonically stab ...
... because the material is eroded away, and it does not need to “ride” as low in the mantle. The eroded material is deposited as sediment on the adjacent thinner continental blocks, which increases their weight, and they then sink farther into the plastic asthenosphere. Areas that are tectonically stab ...
EGU2012-6051
... with periods of hot suboceanic mantle, while the mantle below smaller oceanic plates tends to be colder. Temperature fluctuations of subcontinental mantle are significantly smaller than in oceanic regions and caused by a time-variable efficiency of thermal insulation of the continental convection ce ...
... with periods of hot suboceanic mantle, while the mantle below smaller oceanic plates tends to be colder. Temperature fluctuations of subcontinental mantle are significantly smaller than in oceanic regions and caused by a time-variable efficiency of thermal insulation of the continental convection ce ...
To the teacher
... • What happens when an oceanic plate collides with a continental plate? • The denser oceanic plate subducts under the continental plate. • The Andes Mountains, pictured here, formed as the subducting oceanic plate deformed and pushed up the land at the edge of the continental plate. ...
... • What happens when an oceanic plate collides with a continental plate? • The denser oceanic plate subducts under the continental plate. • The Andes Mountains, pictured here, formed as the subducting oceanic plate deformed and pushed up the land at the edge of the continental plate. ...
Transform Boundary
... • We now know that the farther away you travel from a ridge, the older the crust is, and the older the sediments on top of the crust are. The clear implication is that the ridges are the sites where plates are moving apart. • Where plates collide, great mountain ranges may be pushed up, such as the ...
... • We now know that the farther away you travel from a ridge, the older the crust is, and the older the sediments on top of the crust are. The clear implication is that the ridges are the sites where plates are moving apart. • Where plates collide, great mountain ranges may be pushed up, such as the ...
Hawaii Crustal Plate Lab
... The idea behind plate tectonics is that the crustal plates are moving with respect to one another over geologic time. The rates of movement of crustal plates can be determined by using data from the plate margins along the mid-ocean ridges, or at regions known as “HOTSPOTS” where the distance and ag ...
... The idea behind plate tectonics is that the crustal plates are moving with respect to one another over geologic time. The rates of movement of crustal plates can be determined by using data from the plate margins along the mid-ocean ridges, or at regions known as “HOTSPOTS” where the distance and ag ...
Why do some subduction zones have M9
... but generally is at a depth of 30-‐40 km, a common maximum depth for great thrust earthquake rupture. Several subduction zones appear to have seismic behaviour to slightly greater depths but it is ...
... but generally is at a depth of 30-‐40 km, a common maximum depth for great thrust earthquake rupture. Several subduction zones appear to have seismic behaviour to slightly greater depths but it is ...
plate tectonics webquest3
... 12. a) Compare the red, green and yellow areas on your map to the plate boundaries labeled on page 5 of your Earth Science Reference Tables. Is there a correlation between the location of plate boundaries and the location of most earthquakes, mountains and volcanoes? b) Based on your answer to 12a, ...
... 12. a) Compare the red, green and yellow areas on your map to the plate boundaries labeled on page 5 of your Earth Science Reference Tables. Is there a correlation between the location of plate boundaries and the location of most earthquakes, mountains and volcanoes? b) Based on your answer to 12a, ...
Earth Through Time Summary Tracking Plate Motions
... moving over the top of the weak asthenosphere beneath it. Three kinds of margins are possible between plates. Divergent margins (spreading centers) are those where new lithosphere forms; plates move away from them. Convergent margins (subduction zones) are lines along which plates compress each othe ...
... moving over the top of the weak asthenosphere beneath it. Three kinds of margins are possible between plates. Divergent margins (spreading centers) are those where new lithosphere forms; plates move away from them. Convergent margins (subduction zones) are lines along which plates compress each othe ...
Shape of the subducted Rivera and Cocos plates in southern Mexico
... during the Plioccne and Quaternary. A diversity of structures permanentand temporary local networksand the occurrence such as large strato-volcanoes, monogenetic cineritic cones, recentearthquakesrecordedat tcleseismicdistanceswhichhad shield volcanoes, and several calderas are found on the not been ...
... during the Plioccne and Quaternary. A diversity of structures permanentand temporary local networksand the occurrence such as large strato-volcanoes, monogenetic cineritic cones, recentearthquakesrecordedat tcleseismicdistanceswhichhad shield volcanoes, and several calderas are found on the not been ...
Movement of the Earth Theory of Plate Tectonics
... • The sections, called plates, move on a plastic-like layer of the mantle. – Geologists use the term plastic to describe the consistency of rock that flows but is not a liquid like Silly Putty, modeling clay, or toothpaste. ...
... • The sections, called plates, move on a plastic-like layer of the mantle. – Geologists use the term plastic to describe the consistency of rock that flows but is not a liquid like Silly Putty, modeling clay, or toothpaste. ...
Earth Structure
... sedimentation – Surf and waves carry small particles out to sea which keeps most beaches sandy rather than muddy – Because waves and tides have less effect in deep water, mud is present off shore ...
... sedimentation – Surf and waves carry small particles out to sea which keeps most beaches sandy rather than muddy – Because waves and tides have less effect in deep water, mud is present off shore ...
Part D: Plate Tectonics: Types of Boundaries: Divergent
... 2. The type of convergence -- called by some a very slow "collision" -- that takes place between plates depends on the kind of lithosphere involved. Convergence can occur between what types of plates? a) b) c) Scroll down to: Oceanic-continental convergence 3. Off the coast of South America along th ...
... 2. The type of convergence -- called by some a very slow "collision" -- that takes place between plates depends on the kind of lithosphere involved. Convergence can occur between what types of plates? a) b) c) Scroll down to: Oceanic-continental convergence 3. Off the coast of South America along th ...
tectonic forces
... and which do you need a peek? Tectonic plate movement may be caused by all of the following EXCEPT— A slab pull B ridge push C convection D magnetism ...
... and which do you need a peek? Tectonic plate movement may be caused by all of the following EXCEPT— A slab pull B ridge push C convection D magnetism ...
Continental Drift
... • 1. Magnetic iron particles record the time of the rock formation. http://www.wwnorton.com/college/geo/egeo/flash/2_3.swf ...
... • 1. Magnetic iron particles record the time of the rock formation. http://www.wwnorton.com/college/geo/egeo/flash/2_3.swf ...
Metamorphic and Magmatic Consequences of Subduction of Young
... lithosphere and produce volcanic arcs. However, under special circumstances (e.g., 10 Myr age of lithosphere and 4 cm/yr of convergence rate) cold plumes crystallize at depth in the slab-wedge interface region shortly after onset of subduction. These plumes have no significant influence on the evolu ...
... lithosphere and produce volcanic arcs. However, under special circumstances (e.g., 10 Myr age of lithosphere and 4 cm/yr of convergence rate) cold plumes crystallize at depth in the slab-wedge interface region shortly after onset of subduction. These plumes have no significant influence on the evolu ...
Continent-Continent Convergent Plate Boundaries
... in whole or in sections must include the referral attribution link http://www.ck12.org/saythanks (placed in a visible location) in addition to the following terms. Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made available to Users in accordance with the Cre ...
... in whole or in sections must include the referral attribution link http://www.ck12.org/saythanks (placed in a visible location) in addition to the following terms. Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made available to Users in accordance with the Cre ...
Parts of a continental margin
... rift blocks of continental crust that are covered by sediment passive or active margin Continental shelves, slope, rise Submarine canyons Trenches ...
... rift blocks of continental crust that are covered by sediment passive or active margin Continental shelves, slope, rise Submarine canyons Trenches ...
Continental Drift and Plate Tectonics
... • Oceanic floor samples • Echo soundings • Oceanic ridges • Abysall plain • Denser than continental • < 150 my old ...
... • Oceanic floor samples • Echo soundings • Oceanic ridges • Abysall plain • Denser than continental • < 150 my old ...
3:n:1:di - EVA - Universidad de la República
... Magmatism and plate tectonics Magmatic belts as well as earthquake activity are closely related to plate boundaries. The average yearly production of magmatic (volcanic and plutonic) rocks formed at destructive plate margins is slightly less than l0 km3 (Schmincke, 2004). The melting that produces m ...
... Magmatism and plate tectonics Magmatic belts as well as earthquake activity are closely related to plate boundaries. The average yearly production of magmatic (volcanic and plutonic) rocks formed at destructive plate margins is slightly less than l0 km3 (Schmincke, 2004). The melting that produces m ...
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.