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Deep ocean sediments are thickest where the underlying crust is?
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∙ 12y ago
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∙ 12y ago
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What is the thickest part of the outermost layers?
The crust is the thickest under mountain ranges, up to 70 miles. Average depth of continental crust is 27 miles.
How do the sediments on the ocean floor vary in relation to an ocean ridge?
Sediments become thicker away from the mid ocean ridge. This is because the oceanic crust away from the mid ocean ridge is older than the crust close to it, so sediment has had more time to accumulate.
Where on the ocean floor is sediment the thickest?
the thickest accumulation of sediment on the ocean floor is at the CONTINENTAL SLOPES AND RISES. :)
How does the age of seafloor sediments change with increasing distance from the ocean range?
At ocean spreading ridges, new oceanic crust is formed. The magma that forms this new crust emerges from the ridge and pushes the pre-existing rocks away from the ridge laterally. This results in a strip of new rock cutting through the older rock. As formation of the crust continues, the older rocks will be pushed further away from the ridge, while younger, newly produced rocks will occupy the area closest to the ridge.
How can oceanic sediments became part of continental mountains?
In an ocean-continent convergence, the collision of ocean and continental crust causes the accretion of marine sedimentary deposits to the edge of the continent. These sediments, then, are forced up through normal mountain building orogenic uplift and compression (and faulting). In another method, as the underlying oceanic crust area of a plate tips down at a subduction zone, its ocean-floor sediment can be scraped off along the front edge of the overriding continental plate. The result is an increase in the width and thickness of the overriding plate, and thus, a mountain range. This is seen well at the convergence of the Nazca plate and South American plate (Peru-Chile Trench or Atacama Trench) forming the Andes Mountains - which are actually originally volcanic in origin, but are being buttressed by the new sediments.
What were the goals of the deep sea drilling project?
To investigate the evolution of ocean basins by core drilling of ocean sediments and underlying oceanic crust.
What layer is thinnest under ocean and thickest in the mountains?
The Earth's crust is thinnest under the oceans and thickest in the mountains.
What is the thickest part of the outermost layers?
The crust is the thickest under mountain ranges, up to 70 miles. Average depth of continental crust is 27 miles.
How do the sediments on the ocean floor vary in relation to an ocean ridge?
Sediments become thicker away from the mid ocean ridge. This is because the oceanic crust away from the mid ocean ridge is older than the crust close to it, so sediment has had more time to accumulate.
Where is the oceanic crust thinnest?
Trenches... I don't know why, but I'm 100% sure it's correct!
Where on the ocean floor is sediment the thickest?
the thickest accumulation of sediment on the ocean floor is at the CONTINENTAL SLOPES AND RISES. :)
What are ocean sediments?
Ocean sediments are deposits of materials(organic or in-organic) at the substractum of the ocean.
What are the three types of the ocean floor sediments?
The three types of ocean floor sediments are Terrigenous, Biogenous, and Hydrogenous sediments.
What are the three types of ocean sediments?
The three types of ocean floor sediments are Terrigenous, Biogenous, and Hydrogenous sediments.
What is the thickness is the Earth's crust?
The Earth's oceanic crust is very thin at the mid-ocean ridges, and gradually thickens as it moves away from the ridges. The continental crust is thickest under mountain ranges. The average depth of oceanic crust is around 5 miles. The average depth of continental crust is 22 miles.
Thickest part of the South American plate?
The thickest part of the South American tectonic plate lies below the Andes Mountains. They were created from the compression of the South American plate with the Nazca Plate and the Antarctic Plate.
What means the ocean is pulled under the continent?
The ocean is never pulled under the continent. Oceanic crust--the rock and some sediments, however, slide under the edges of continental crust and are pushed downward toward the mantle in areas of oceanic to continental plate collisions.
