Are the continents moving? What are plate tectonics?
... What cause the ocean floor to move? In the middle of the ocean where the plates are moving apart, magma is pushed up from the mantle to the surface. The upward movement of magma causes tension, or a stretch or push, on the plates. This push moves the ocean floor apart and separates the plate. Thi ...
... What cause the ocean floor to move? In the middle of the ocean where the plates are moving apart, magma is pushed up from the mantle to the surface. The upward movement of magma causes tension, or a stretch or push, on the plates. This push moves the ocean floor apart and separates the plate. Thi ...
Notes Chapter 28
... A huge wave generated by an underwater earthquake or landslide is called a tsunami. The speed at which this wave travels can be about 700 ...
... A huge wave generated by an underwater earthquake or landslide is called a tsunami. The speed at which this wave travels can be about 700 ...
Chapter 28 PPt
... A huge wave generated by an underwater earthquake or landslide is called a tsunami. The speed at which this wave travels can be about 700 ...
... A huge wave generated by an underwater earthquake or landslide is called a tsunami. The speed at which this wave travels can be about 700 ...
Earthquakes Assessment
... a. There is more moisture in the atmosphere. b. Ash reflects energy from the sun, so it does not reach the surface. c. More pollen blocks sunlight coming into the atmosphere. d. More carbon dioxide enters the atmosphere. 26. Increased levels of greenhouse gases in the atmosphere result in: a. Greate ...
... a. There is more moisture in the atmosphere. b. Ash reflects energy from the sun, so it does not reach the surface. c. More pollen blocks sunlight coming into the atmosphere. d. More carbon dioxide enters the atmosphere. 26. Increased levels of greenhouse gases in the atmosphere result in: a. Greate ...
Ocean Basin Physiography
... morphology. 3. Abyssal plains are found near some "Atlantic" type continental margins where sediments from turbidity currents have flowed off the continental rise and spread out over the ocean floor producing extremely flat stretches of the ocean floor. Other features include seamounts (hills >1 km ...
... morphology. 3. Abyssal plains are found near some "Atlantic" type continental margins where sediments from turbidity currents have flowed off the continental rise and spread out over the ocean floor producing extremely flat stretches of the ocean floor. Other features include seamounts (hills >1 km ...
ES Ch 1 NOTES Plate Tectonics
... swamps, from the remains of vegetation that grew as long as 400 million years ago. 5) Geology- Rock layers found in on the _______________________ of one continent may be the same as rock layers on other continents. B) The theory of _____________________________________________________ explains how ...
... swamps, from the remains of vegetation that grew as long as 400 million years ago. 5) Geology- Rock layers found in on the _______________________ of one continent may be the same as rock layers on other continents. B) The theory of _____________________________________________________ explains how ...
Week 1
... ocean ridge. I was familiar with ideas about sea floor spreading and reversals of the earth’s magnetic field, and I could have kicked myself for not thinking of the idea, particularly because, had I looked more carefully at our map. I would have realized that some of the seamounts might be reverseky ...
... ocean ridge. I was familiar with ideas about sea floor spreading and reversals of the earth’s magnetic field, and I could have kicked myself for not thinking of the idea, particularly because, had I looked more carefully at our map. I would have realized that some of the seamounts might be reverseky ...
TEST REVIEW KEY – Cat Events, W-E
... Weathering caused by running WATER and can result in rocks that are smooth and ROUNDED. Weathering caused by ice, results in rocks that are rough and JAGGED. ...
... Weathering caused by running WATER and can result in rocks that are smooth and ROUNDED. Weathering caused by ice, results in rocks that are rough and JAGGED. ...
Earthquakes
... Where do earthquakes occur? (cont.) • seismic waves -When rocks move along a fault, they release energy that travels as vibrations on and in Earth • Focus- These waves originate where rocks first move along the fault, at a location inside Earth ...
... Where do earthquakes occur? (cont.) • seismic waves -When rocks move along a fault, they release energy that travels as vibrations on and in Earth • Focus- These waves originate where rocks first move along the fault, at a location inside Earth ...
Name_________________________ Earth`s
... The outer layer of the earth is called the __________________. It is made up of tectonic ________________. Just underneath the crust is the _____________________ and right in the middle of the earth is the _____________. Colliding plates produce _______________________ and _____________________ at t ...
... The outer layer of the earth is called the __________________. It is made up of tectonic ________________. Just underneath the crust is the _____________________ and right in the middle of the earth is the _____________. Colliding plates produce _______________________ and _____________________ at t ...
Plate tectonics
... a) The average content of water in the subducting slab is 400 parts per million (ppm) b) The subducting plate is 100 km thick with a density of 3 grams/cm 3 c) The rate of subduction is 15 mm/year d) The ocean has about 1.35 x 109 km3 of water (a cubic kilometre of water weighs 109 tonnes, so this e ...
... a) The average content of water in the subducting slab is 400 parts per million (ppm) b) The subducting plate is 100 km thick with a density of 3 grams/cm 3 c) The rate of subduction is 15 mm/year d) The ocean has about 1.35 x 109 km3 of water (a cubic kilometre of water weighs 109 tonnes, so this e ...
Continental rifting on Earth and Mars - A comparison
... initiate lithosphere scale faulting and thus induce rifting. This hypothesis is in good agreement with the observation of rift-related volcanism as well as the fact that faults seem to initiate at volcanoes and propagate away from them before interconnecting. We conclude that rifting on Mars is feas ...
... initiate lithosphere scale faulting and thus induce rifting. This hypothesis is in good agreement with the observation of rift-related volcanism as well as the fact that faults seem to initiate at volcanoes and propagate away from them before interconnecting. We conclude that rifting on Mars is feas ...
Plate Tectonics
... •Glacial sediment deposits found in places where glaciers do not exist today. •Glacial Scratches (scratches on rock caused by glacial movement) line up like a jigsaw puzzle when continents are reassembled. ...
... •Glacial sediment deposits found in places where glaciers do not exist today. •Glacial Scratches (scratches on rock caused by glacial movement) line up like a jigsaw puzzle when continents are reassembled. ...
Chapter 2
... mantle rise and fall according to differences in temperature and buoyancy. The densest lithosphere is most likely to sink back into the asthenosphere and the deeper mantle. Ocean floor and the continents are slowly moving (up to 12 cm/yr). ...
... mantle rise and fall according to differences in temperature and buoyancy. The densest lithosphere is most likely to sink back into the asthenosphere and the deeper mantle. Ocean floor and the continents are slowly moving (up to 12 cm/yr). ...
Wegener—Continental Drift
... gases, and water from the mantle. C. Theory that pieces of Earth’s lithosphere are in constant motion, driven by convection currents in the mantle. D. Process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle. ...
... gases, and water from the mantle. C. Theory that pieces of Earth’s lithosphere are in constant motion, driven by convection currents in the mantle. D. Process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle. ...
Th/U - APC
... • U and Th (K?) are thought to be absent from the core and present in the mantle and crust. ...
... • U and Th (K?) are thought to be absent from the core and present in the mantle and crust. ...
landforms - Pershing Research Page
... some old mountains that erosion has worn down to big hills. In New York State, the land is low and hilly in some places and higher in other places. Dad says the higher places are part of a huge, high area of land called a plateau (pla-TOH). ...
... some old mountains that erosion has worn down to big hills. In New York State, the land is low and hilly in some places and higher in other places. Dad says the higher places are part of a huge, high area of land called a plateau (pla-TOH). ...
Do deep mantle plumes explain the Mesozoic igneous features of
... ages in eastern North America are NOT on mantle plume tracks. Lithospheric structures may control where mantle melts rise through the crust. Oceanic fracture zone propagate along plate movement directions, providing pathways for chains and clusters of seamount volcanoes. Warm sections of a layered u ...
... ages in eastern North America are NOT on mantle plume tracks. Lithospheric structures may control where mantle melts rise through the crust. Oceanic fracture zone propagate along plate movement directions, providing pathways for chains and clusters of seamount volcanoes. Warm sections of a layered u ...
Geodynamics
... • Geochemistry suggests mantle not very well mixed • Seismic tomography shows 670km discontinuity is not a barrier for convection and mantle may be mixed • Models of mantle convection • Avalanches? Intermittent mixing. (see also some of the tomography). • Lava lamp type of model? ...
... • Geochemistry suggests mantle not very well mixed • Seismic tomography shows 670km discontinuity is not a barrier for convection and mantle may be mixed • Models of mantle convection • Avalanches? Intermittent mixing. (see also some of the tomography). • Lava lamp type of model? ...
The Structure of the Earth and Plate Tectonics
... Ocean-Ocean Plate Collision • 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 OCEA ...
... Ocean-Ocean Plate Collision • 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 OCEA ...
A Landforms Adventure
... We’re almost to the Mississippi River, one of the longest rivers in the world. This part of the Mississippi was carved by glaciers. We cross the Mississippi River on the way to the Great Plains. A plain is a large, flat area without many trees. The Great Plains formed when two plates smashed into ea ...
... We’re almost to the Mississippi River, one of the longest rivers in the world. This part of the Mississippi was carved by glaciers. We cross the Mississippi River on the way to the Great Plains. A plain is a large, flat area without many trees. The Great Plains formed when two plates smashed into ea ...
PROGRAM - Tectonic Impacts
... flows and examine the impact of these hazards on the environment, on people and other living things justify continued research into reliable prediction of volcanic activity and earthquakes describe and explain the impacts of shock waves (earthquakes) on natural and built environments distinguish bet ...
... flows and examine the impact of these hazards on the environment, on people and other living things justify continued research into reliable prediction of volcanic activity and earthquakes describe and explain the impacts of shock waves (earthquakes) on natural and built environments distinguish bet ...
John "Zack" Smith`s Paper
... boundary zones. Divergent boundaries are boundaries in which plates are moving apart from each other and magma is pushing upwards causing new crust to be formed. Convergent boundaries are the places where the plates collide and sometimes sink under each other to form trenches or push upwards to form ...
... boundary zones. Divergent boundaries are boundaries in which plates are moving apart from each other and magma is pushing upwards causing new crust to be formed. Convergent boundaries are the places where the plates collide and sometimes sink under each other to form trenches or push upwards to form ...
Press release "New model for deep mantle conveyor belt system at
... Institute of Technology report in Nature Geophysics (online 27 Feb 2017) a new model for the existence of a deep mantle conveyor belt system that may have operated inside the Earth since its formation about 4.5 billion years ago. Most earthquakes, volcanoes, mountain building, sea-floor spreading, a ...
... Institute of Technology report in Nature Geophysics (online 27 Feb 2017) a new model for the existence of a deep mantle conveyor belt system that may have operated inside the Earth since its formation about 4.5 billion years ago. Most earthquakes, volcanoes, mountain building, sea-floor spreading, a ...
layers of the earth
... Crust: A very thin, solid outer layer. The oceanic crust is about 5 km thick. The continental crust is 30–40 km thick. Moho: The boundary between the crust and the mantle (named for the Mohorovic ...
... Crust: A very thin, solid outer layer. The oceanic crust is about 5 km thick. The continental crust is 30–40 km thick. Moho: The boundary between the crust and the mantle (named for the Mohorovic ...
Post-glacial rebound
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Post-glacial rebound (sometimes called continental rebound) is the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period, through a process known as isostatic depression. Post-glacial rebound and isostatic depression are different parts of a process known as either glacial isostasy, glacial isostatic adjustment, or glacioisostasy. Glacioisostasy is the solid Earth deformation associated with changes in ice mass distribution. The most obvious and direct affects of post-glacial rebound are readily apparent in northern Europe (especially Scotland, Estonia, Latvia, Fennoscandia, and northern Denmark), Siberia, Canada, the Great Lakes of Canada and the United States, the coastal region of the US state of Maine, parts of Patagonia, and Antarctica. However, through processes known as ocean siphoning and continental levering, the effects of post-glacial rebound on sea-level are felt globally far from the locations of current and former ice sheets.