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What happens during isostatic rebound?
Post-glacial rebound (sometimes called continental rebound, glacial isostasy, glacial isostatic adjustment) 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 isostasy.
Explain how erosion and isostasy eventually produce stable relatively thin continental crust?
As material is removed from mountains by erosion, the range floats upward to regain its isostatic balance. This process can be thought of as "the pull of erosion." As the mountains wear down to a low plain, erosion becomes virtually ineffective and the now this crust achieves isostatic balance; the former mountain belt becomes part of the craton.
How isostatic adjustments affect isostasy?
Gravity.
What geological principle explains how continental crust rests on oceanic crust?
The principle of isostasy explains how the less dense continental crust "floats" higher on the denser, heavier oceanic crust. This is similar to how icebergs float higher in water. The balance between the two crust types is maintained by the buoyant force exerted by the mantle beneath them.
Is Isostasy a type of stress?
Isostasy itself isn't a type of stress. Restoring isostasy, however, puts stress on the crust. Allow me to explain: Isostasy is the process of the earth's crust floating on the mantle. When the crust suddenly gets heavier (this happens during an ice age close to the poles, the weight of the ice pushing the crust down), the crust will sink deeper into the mantle. This process is called "restoring the isostasy". The isostasy is reached when the upward force from the mantle (the buoyant force) and the downward force from the crust (gravity) are in balance again. When an ice age ends, the isostasy will be disrupted again, because all the weight of the ice on the crust will be gone. The crust will start to rise again, using the same forces as before, but in a reverse way. This process is still going on in Scandinavia, where the crust is still lifting up from the last ice age. As with all geological processes, restoring isostasy isn't fast: it can take thousands of years to restore the isostasy. Analog to the isostacy (but a lot quicker), is when you push down an icecube in a glass of water. The icecube will get lower into the water, as you push it down. but it will push back, because it's lighter then the water, and the buoyant force tries to make it float as good as possible. When it doesn't move anymore, it means the buoyant force and the force you are applying with your finger are in balance, and isostasy is reached.
Who is Alfred Wegener and what was his Hypothesis about how Earth's continents have moved?
Alfred Wegener was a scientist who proposed the theory of continental drift and the idea of isostasy. The idea of isostasy stated that continental blocks drifted upon oceanic blocks (continental blocks had a lower density than oceanic blocks, which explained why it was higher than oceanic blocks).
Plate motion is caused partly by magnetic reversals convection currents continental drift or volacnic hot spots?
Convection currents
The principle of continents being in buoyant equilibrium is called?
isostasy
What happens during isostatic rebound?
Post-glacial rebound (sometimes called continental rebound, glacial isostasy, glacial isostatic adjustment) 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 isostasy.
What is the definition of isostatic?
An isostatic is something that pertains to or is characterized by isostasy. Isostasy is the equilibrium of the Earths crust.
What are the three type of isostasy?
Three principal models of isostasy are:The Airy-HeiskanenModel- where different topographic heights are accommodated by changes in crustal thickness, in which the crust has a constant density The Pratt-HayfordModel- where different topographic heights are accommodated by lateral changes in rock density. The Vening Meinesz, or Flexural Model- where the lithosphere acts as an elastic plate and its inherent rigidity distributes local topographic loads over a broad region by bending.
When a continental plates collide with another continental plate what it is caused?
Earthquake
A condition of gravitational equilibrium in the Earth's crust is know as?
Isostasy is the condition of gravitational equilibrium in the Earth's crust. It refers to the balance between the forces pushing down on the crust (gravity) and the forces pushing back up (buoyancy) caused by variations in the density and thickness of different parts of the crust.
What is caused ny motin?
what is caused by motion
The balance between gravity and buoyancy is called?
The balance between gravity and buoyancy is called equilibrium.
What caused pangaea to separte?
Continental Drift caused pangaea to seperate.
What is a sentence using isostasy?
Monkey
