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Describe why the age of ocean floor is younger near mid-ocean ridges and older near continental boundaries?
BrieannaBrennangp932...
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Where do midocean ridges intersect the landmasses?
Midocean ridges are areas where continents broke apart. Midocean ridges are closest to the landmasses in younger oceans. One example where a midocean ridge intersected a landmass is the Arabian sea, which was formed by the pulling apart of the Arabian Peninsula and Africa.
Which type of crust is heavier and younger?
Oceanic crust is both denser (and therefore heavier) and younger than continental crust.
Why are volcanoes not found on collision boundaries?
There is no subduction at a continental-continental convergent boundary. When an oceanic plate meets a continental plate or a younger oceanic plate it is forced down into the mantle. Seawater and other "volatiles" it takes with it alter the chemistry of the hot mantle rock, causing some of it to melt and rise toward the surface to form volcanoes. Continental crust is not dense enough to subduct, so no volatiles enter the mantle.
Are oceanic plates only made up of oceanic crust?
yes but oceanic crust is younger than continental crust because of deep sea trenches
Why is seafloor crust younger than continental crust?
You are possibly aware of plate tectonics, the surface of the earth is divided into a series of rigid plates of the lithosphere (the crust and upper part of the mantle). Example of one which is know well, the Pacific plate (ring of fire).The different plates meet at plate boundaries, three major types, the one we are interested in, is the divergent boundary (plates move apart).Such boundaries occur in mid oceans (mid-ocean ridges) and are associated with the addition of new crustal material from below the earth crust. As the crust moves away from the mid ocean ridge it becomes older. Therefore many million years ago the continental rocks were on the ocean bottom.This is a simplistic answer and have not taken into account the other two very important types which also contribute, which form volcanoes and mountain.As for the age of the sea floor would be in the order 125 to 200 million years old and the continental rocks in the order of a few billion years old.
Where do midocean ridges intersect the landmasses?
Midocean ridges are areas where continents broke apart. Midocean ridges are closest to the landmasses in younger oceans. One example where a midocean ridge intersected a landmass is the Arabian sea, which was formed by the pulling apart of the Arabian Peninsula and Africa.
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
Which is younger a continental shelf or a ridge?
A ridge!
Oceanic crust is than continental crust.?
younger
Which type of crust is heavier and younger?
Oceanic crust is both denser (and therefore heavier) and younger than continental crust.
What parts of speech is younger?
The word "younger" is an adjective, used to describe someone or something as having a lower age in comparison to others.
Why is oceanic crust usually much younger than continental crust?
Crust is produced at constructive plate boundaries, usually at mid ocean ridges. Here the plates are moving apart and magma wells up to form new basaltic rock. This means the youngest crust is usually part of an oceanic plate. When an oceanic plate collides with a continental plate, the denser oceanic plate sinks down in a subduction zone and ends up as magma again. The less dense continental crust is forced upwards and is preserved. Continental rocks are thus often very old.
How did the younger man huck met in the woods describe himself-?
The younger man Huck met in the woods described himself as the true Duke of Bridgewater. He boasted about his royal heritage and claimed to be a long-lost heir to a dukedom.
Describe Johnny's relationship with his parents?
not very good because his parents abused him when he was younger
Why are there fewer large impact craters on the Earth's seafloor than on the continents?
The seafloor crust is younger than the continental crust.
Where is the oceanic crust sinking into mantle?
Usually when it meets another tectonic plate at a convergent plate boundary. If the oceanic plate converges with a continental plate the denser oceanic plate will be forced under the continental plate. If it converges with another oceanic plate the older (and therefore cooler and denser) plate will be forced under the younger plate.
Why are volcanoes not found on collision boundaries?
There is no subduction at a continental-continental convergent boundary. When an oceanic plate meets a continental plate or a younger oceanic plate it is forced down into the mantle. Seawater and other "volatiles" it takes with it alter the chemistry of the hot mantle rock, causing some of it to melt and rise toward the surface to form volcanoes. Continental crust is not dense enough to subduct, so no volatiles enter the mantle.
