Ch 9 study guide answer key
... core, p. 235; inner core, p. 235; 9.1 Plate Tectonics: continental drift, p. 248; Pangaea, p. 248, plate tectonics, p. 254; divergent boundary, p. 255; convergent boundary, p. 255; transform fault boundary, p. 255, ridge, p. 258; seafloor spreading, p. 259; subduction zone, p. 261; trench, p. 261, p ...
... core, p. 235; inner core, p. 235; 9.1 Plate Tectonics: continental drift, p. 248; Pangaea, p. 248, plate tectonics, p. 254; divergent boundary, p. 255; convergent boundary, p. 255; transform fault boundary, p. 255, ridge, p. 258; seafloor spreading, p. 259; subduction zone, p. 261; trench, p. 261, p ...
How do the Tectonic Plates on the Earth`s crust move ? The crust of
... back down into the mantle. It heats up and rises again in a continuous cycle. The tectonic plates that float on top of these currents of magma get dragged in whatever direction they are travelling. See diagram 1. These convection currents of magma are the main cause of tectonic plate movement. Diagr ...
... back down into the mantle. It heats up and rises again in a continuous cycle. The tectonic plates that float on top of these currents of magma get dragged in whatever direction they are travelling. See diagram 1. These convection currents of magma are the main cause of tectonic plate movement. Diagr ...
Benchmark (IMEDL 2004)
... deformation distributed and the topography small. It also allows for the initial uniform stretching of the lithosphere. Serpentinization and weakening both control the final asymmetry. A weak (wet) mantle reduces the thickness of the brittle lithosphere and the force needed to stretch ...
... deformation distributed and the topography small. It also allows for the initial uniform stretching of the lithosphere. Serpentinization and weakening both control the final asymmetry. A weak (wet) mantle reduces the thickness of the brittle lithosphere and the force needed to stretch ...
- GPlates
... pre-collision geometries. The conventional model with Andean-style subduction along continental Eurasia was constructed in GPlates, and varied to include a large Tethyan back-arc that opens between 150 and 120 Ma for the alternative scenario. Plate velocities were ap- ...
... pre-collision geometries. The conventional model with Andean-style subduction along continental Eurasia was constructed in GPlates, and varied to include a large Tethyan back-arc that opens between 150 and 120 Ma for the alternative scenario. Plate velocities were ap- ...
mantle convection worksheet
... 4. What causes the convection cell to turn to the left at point B? 5. What happens to the temperature and density of the material between points B and C? 6. What force causes the convection cell to turn down at point C? 7. What happens to the temperature and density of the material between points D ...
... 4. What causes the convection cell to turn to the left at point B? 5. What happens to the temperature and density of the material between points B and C? 6. What force causes the convection cell to turn down at point C? 7. What happens to the temperature and density of the material between points D ...
What`s Happening During Convection?
... 4. What causes the convection cell to turn to the left at point B? 5. What happens to the temperature and density of the material between points B and C? 6. What force causes the convection cell to turn down at point C? 7. What happens to the temperature and density of the material between points D ...
... 4. What causes the convection cell to turn to the left at point B? 5. What happens to the temperature and density of the material between points B and C? 6. What force causes the convection cell to turn down at point C? 7. What happens to the temperature and density of the material between points D ...
Exam 1
... 1. Which of the following has the least average sediment thickness? a. continental shelves b. continental slopes c. continental rise d. deep-ocean floor 2. Calcareous sediments are found in deep-sea areas, always below a depth of about 4500 m a. True b. False 3. Siliceous sediments will only be pres ...
... 1. Which of the following has the least average sediment thickness? a. continental shelves b. continental slopes c. continental rise d. deep-ocean floor 2. Calcareous sediments are found in deep-sea areas, always below a depth of about 4500 m a. True b. False 3. Siliceous sediments will only be pres ...
File
... • Hess’ idea of sea floor spreading caused scientists to revisit Wegener’s idea of continental drift! ...
... • Hess’ idea of sea floor spreading caused scientists to revisit Wegener’s idea of continental drift! ...
Chapter2.pdf
... Earth, pressure is 3.6 million times greater than at the surface and temperatures can reach 4,300oC, nearly as hot as the Sun’s surface. The rate of temperature change with depth is called the geothermal gradient. ...
... Earth, pressure is 3.6 million times greater than at the surface and temperatures can reach 4,300oC, nearly as hot as the Sun’s surface. The rate of temperature change with depth is called the geothermal gradient. ...
PRIMARY MAGMAS AT MID-OCEAN RIDGES, `HOT
... the P,T field between the regionally applicable conductive geotherm and adiabatic upwelling of mantle with potential temperature (Tp) ~1430oC (FIG. 2). In many earth models, Mid-Ocean Ridge magmatism is attributed to decompression melting of upwelling upper mantle/asthenosphere at normal mantle temp ...
... the P,T field between the regionally applicable conductive geotherm and adiabatic upwelling of mantle with potential temperature (Tp) ~1430oC (FIG. 2). In many earth models, Mid-Ocean Ridge magmatism is attributed to decompression melting of upwelling upper mantle/asthenosphere at normal mantle temp ...
Power Point File 5 - KFUPM Faculty List
... There are very few such long lived plume products and it is questionable whether they remain fixed. The common way of tracking plate motions is in a relative framework. Some useful rules: 1. Plate motions are transform parallel; 2. Plate moves away from ridge 3. The sum of relative plate velocities ...
... There are very few such long lived plume products and it is questionable whether they remain fixed. The common way of tracking plate motions is in a relative framework. Some useful rules: 1. Plate motions are transform parallel; 2. Plate moves away from ridge 3. The sum of relative plate velocities ...
Exploring Inside Earth
... skin. The crust is a layer of solid rock that includes both dry land and the ocean floor. Oceanic crust consists mostly of rocks such as basalt. Continental crust, the crust that forms the continents, consists mainly of rocks such as granite. ...
... skin. The crust is a layer of solid rock that includes both dry land and the ocean floor. Oceanic crust consists mostly of rocks such as basalt. Continental crust, the crust that forms the continents, consists mainly of rocks such as granite. ...
Continental Formation - Department of Geosciences
... • Obviously it had to be recycled- otherwise the Earth should be increasing its volume • At subduction zones, magmatism tends to follow the subduction margin - the resulting product is a magmatic “arc” ...
... • Obviously it had to be recycled- otherwise the Earth should be increasing its volume • At subduction zones, magmatism tends to follow the subduction margin - the resulting product is a magmatic “arc” ...
Mr. Phillips Earth Structure and Plate Tectonics Reading Questions
... ___ 14. Oceanic plates are more dense than continental plates. ___ 15. Earthquakes and volcanoes are concentrated near plate boundaries. Matching A. Magnetic B. 200 million years C. Glomar Challenger D. Trench/Subduction Zone E. Harry Hess ...
... ___ 14. Oceanic plates are more dense than continental plates. ___ 15. Earthquakes and volcanoes are concentrated near plate boundaries. Matching A. Magnetic B. 200 million years C. Glomar Challenger D. Trench/Subduction Zone E. Harry Hess ...
plates - bethwallace
... in a factory moves boxes like the convection currents in the mantle moves the plates of the Earth. ...
... in a factory moves boxes like the convection currents in the mantle moves the plates of the Earth. ...
Take Home 11 Complete the following on your own paper. Do not
... the inner core of Earth. J. Rigid layer made up of the uppermost part of the mantle and crust. ...
... the inner core of Earth. J. Rigid layer made up of the uppermost part of the mantle and crust. ...
The Structure of the Earth*s Interior
... different layers. The crust is the layer that you live on, and it is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The outer core and inner core are even hotter with pressures so great you would be squeezed into a ball smaller than a marble if you wer ...
... different layers. The crust is the layer that you live on, and it is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The outer core and inner core are even hotter with pressures so great you would be squeezed into a ball smaller than a marble if you wer ...
Mantle plume
A mantle plume is a mechanism proposed in 1971 to explain volcanic regions of the earth that were not thought to be explicable by the then-new theory of plate tectonics. Some such volcanic regions lie far from tectonic plate boundaries, for example, Hawaii. Others represent unusually large-volume volcanism, whether on plate boundaries, e.g. Iceland, or basalt floods such as the Deccan or Siberian traps.A mantle plume is posited to exist where hot rock nucleates at the core-mantle boundary and rises through the Earth's mantle becoming a diapir in the Earth's crust. The currently active volcanic centers are known as ""hot spots"". In particular, the concept that mantle plumes are fixed relative to one another, and anchored at the core-mantle boundary, was thought to provide a natural explanation for the time-progressive chains of older volcanoes seen extending out from some such hot spots, such as the Hawaiian–Emperor seamount chain.The hypothesis of mantle plumes from depth is not universally accepted as explaining all such volcanism. It has required progressive hypothesis-elaboration leading to variant propositions such as mini-plumes and pulsing plumes. Another hypothesis for unusual volcanic regions is the ""Plate model"". This proposes shallower, passive leakage of magma from the mantle onto the Earth's surface where extension of the lithosphere permits it, attributing most volcanism to plate tectonic processes, with volcanoes far from plate boundaries resulting from intraplate extension.