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Gravity
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How do earths magnetic pole reversals provide evidence for plate tectonics?
Magnetic stripes can be seen as you move away from ocean ridges.
Boundaries are often found at ocean ridges.?
Yes, ocean ridges are divergent plate boundaries where tectonic plates move away from each other. As the plates separate, molten rock rises from the mantle and solidifies to form new oceanic crust, creating the underwater mountain range characteristic of ocean ridges.
At which type of plate boundary are mid-ocean ridges found?
Mid-ocean ridges are typically found at divergent plate boundaries, where tectonic plates are moving away from each other. These ridges are formed by the upwelling of magma from the mantle, creating new oceanic crust as the plates separate.
Isochron maps indicate what about the seafloor of the ocean crust?
Isochron maps indicate the age of the seafloor on the ocean crust. They show patterns of different ages of the oceanic crust moving away from mid-ocean ridges, where new crust is being formed. Younger crust is found closer to the ridges, while older crust is found farther away.
Why does oceanic crust get older as you get closer to continents?
The basalts of the ocean floors are created at the mid-ocean ridges and moves away from these ridges as new crust is created. thus as sea floor spreading occurs the older rock gets pushed away from the ridge towards the continents and the younger rock comes up beside the ridge. good example is the Atlantic ocean
What draws dense rock away from mid-ocean ridges?
Gravity
Why does oceanic lithosphere sink at subduction zones but not at mid ocean ridges?
oceanic lithosphere sinks at subduction zones but not at mid ocean ridges because at subduction zones the oceanic lithosphere is subducted, or sinks, under another plate. Oceanic Lithosphere sinks at subduction zones which are usually at convergent boundaries, but at mid-ocean ridges the plates are actually separating not coming together
Why is the ocean floor lower as you move away from the mid-ocan ridges?
The mid-ocean ridges which wrap around the ocean floor like the seam of a baseball, are high topographic features-but as you go away from either side of a ridge, the ocean floor subsides as it cools.
How do earths magnetic pole reversals provide evidence for plate tectonics?
Magnetic stripes can be seen as you move away from ocean ridges.
What happens the age of rock with distance from the mid ocean ridges?
The age of rock increases with distance from mid-ocean ridges. At the ridges, new oceanic crust is formed through volcanic activity, which is young. As the crust moves away from the ridges, it cools and becomes older. This process is known as seafloor spreading.
Ocean ridges are formed by what boundaries?
Divergent boundaries form ocean ridges.
Boundaries are often found at ocean ridges.?
Yes, ocean ridges are divergent plate boundaries where tectonic plates move away from each other. As the plates separate, molten rock rises from the mantle and solidifies to form new oceanic crust, creating the underwater mountain range characteristic of ocean ridges.
Do Ocean sediments become younger or older away from midocean ridges?
Older, as it moves away from the mid-ocean ridge the sediment gets thicker and older
Is mid-ocean ridge is how the direction of sea-floor spreading?
It spreads away form the ridges
Oceans become deeper moving away from ridges due to?
As the sheets of oceanic crust move away from the mid-ocean ridge, the rock is cooled and thus becomes heavier. After about 200 million years, the cooled Lithospheric plate has become heavier than the Asthenosphere that it rides over, and it sinks, thereby producing a subduction zone.
At which type of plate boundary are mid-ocean ridges found?
Mid-ocean ridges are typically found at divergent plate boundaries, where tectonic plates are moving away from each other. These ridges are formed by the upwelling of magma from the mantle, creating new oceanic crust as the plates separate.
Which force draws the cooler denser crust downward and away from the mid-ocean ridge?
gravity
