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plate tectonics
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Deep-oceanic trenches are most abundant around the rim of the?
Deep-oceanic trenches are most abundant around the rim of the Pacific. Deep ocean trenches are surficial evidence for sinking of oceanic lithosphere into the mantle at a subduction zone.
What are the valleys under the ocean called?
They are called trenches.
Are oceanic plates only made up of oceanic crust?
yes but oceanic crust is younger than continental crust because of deep sea trenches
What is the process by which oceanic crust sinks beneath the trenches?
Oceanic crust sinks beneath trenches through a process known as subduction. As oceanic plates collide with continental plates, the denser oceanic plate is forced downward into the mantle due to gravitational pull. This creates a subduction zone where the oceanic crust eventually melts and is recycled back into the mantle.
A geologic feature of divergent plate boundaries in oceanic crust is the formation of?
rift valleys
Deep-oceanic trenches are most abundant around the rim of the?
Deep-oceanic trenches are most abundant around the rim of the Pacific. Deep ocean trenches are surficial evidence for sinking of oceanic lithosphere into the mantle at a subduction zone.
What are the valleys under the ocean called?
They are called trenches.
What causes oceanic trenches?
Deep ocean trenches are made where one plate is submerged under another
Oceanic crust returns to the mantle at deep ocean trenches which are?
rocks
What are valleys between the ridges on the ocean floor?
They are called oceanic trenches.
Are oceanic plates only made up of oceanic crust?
yes but oceanic crust is younger than continental crust because of deep sea trenches
What is the process by which oceanic crust sinks beneath the trenches?
Oceanic crust sinks beneath trenches through a process known as subduction. As oceanic plates collide with continental plates, the denser oceanic plate is forced downward into the mantle due to gravitational pull. This creates a subduction zone where the oceanic crust eventually melts and is recycled back into the mantle.
What is the result when ocean floors spread?
oceanic trenches and volcanoes from the rising magma.
How do you contrast mid-ocean ridges and trenches?
Mid-ocean ridges are the birthplace of oceanic crust. Trenches represent the destruction and burial of oceanic crust. They are at opposite ends of the Earth's convection currents that move through the asthenosphere.
What is the definition for ocean trenches?
Trenches are the lowest points on the crust of the Earth, created by the subduction of oceanic crust beneath less dense crust.
What geologic features are associated with each type of convergent boundary?
Subduction zones, trenches and volcanic islands: the boundary that is oceanic. Trenches and volcanic islands: an oceanic-continental boundary. Folded mountain ranges: a continental and continental collision.
What forms when oceanic plates collide?
1. Oceanic trenches. 2. Volcanic islands. 3. Volcanic mountains. and 4. Volcanic arcs.
