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Deep ocean floor samples can be obtained by submersibles.
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∙ 15y ago
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How old are rocks in ocean crust?
The age of rocks in the ocean crust depends on where the rocks are collected. Scientists collected rock samples from the sea floor. They found out that rock samples that were closer to mid-ocean ridges were younger than the samples farther away from the ridges. So pretty much you could get rocks that are thousands of years old to over millions of year old.
How scientist discover that rocks farther away from the mid ocean ridge were older than those near it?
By determing the age of rock samples obtained by drilling in the sea floor!:)
Iron rich volcanic rock that makes up much of the ocean floor is?
The volcanic rock that makes up most of the ocean floor is called sediment.
How do strips of magnetized rock on the ocean floor provide evidence of sea-floor spreading?
Strips of ocean-floor basalt record the polarity of earth's magnetic field at the time the rock formed. These strips form a pattern that is the same on both sides of the mid-ocean ridge. the pattern shows that ocean floor forms along mid-ocean ridges and then moves away from the ridge.
Rock on the ocean floor provided the final proof of sea -floor spreading with a record of?
Pangaea probably?
Why is the rock farther from the ocean ridge is older than the rock near the mid ocean ridge?
By determining the age of rock samples obtained by drilling on the sea floor.
What is the name of the ship that collected rock samples that proved the ocean floor is younger near the mid-ocean ridge?
Glomar challenger
How old are rocks in ocean crust?
The age of rocks in the ocean crust depends on where the rocks are collected. Scientists collected rock samples from the sea floor. They found out that rock samples that were closer to mid-ocean ridges were younger than the samples farther away from the ridges. So pretty much you could get rocks that are thousands of years old to over millions of year old.
What evidence in rock supports the theory of seafloor spreading?
Convergence supports the theory of seafloor spreading. Samples of the deep ocean floor are evidence of seafloor spreading because the basaltic oceanic crust and overlapping sediment become younger as the mid-ocean ridge is approached. Also, the rock that makes up the floor of the ocean is younger than the continents.
What are three kinds of evidence scientists have found to support ocean floor spreading?
1. Paleomagnetism. 2.(Thickness of the beds) Samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge. 2. (Age of the sea-floor) The rock making up the ocean floor is considerably younger than the continents, with no samples found over 200 million years old, as contrasted with maximum ages of over 3 billion years for the continental rocks. This confirms that older ocean crust has been reabsorbed in ocean trench systems. 3. (Geologic Activities) Study of the fracture zones that offset the sections of the ridge.
Explain how ocean-floor rocks and sediments are evidence of seafloor spreading?
The seafloor rocks vary in different places. Rock samples near ocean ridges are younger than rocks at deep sea trenches
How scientist discover that rocks farther away from the mid ocean ridge were older than those near it?
By determing the age of rock samples obtained by drilling in the sea floor!:)
When scientist drilled into the ocean floor taking rock samples what did they discover about the age of the rocks?
oldest at the bottom youngest on top. Its the law of superposition. They also found that the age of rocks increases with increased distance from mid-ocean-ridges.
How is new rock added to the ocean floor?
usually from lava sinking to ocean floor and cooling.
What type of rock is organic rock?
An Organic rock is an Sedimentary rock and it is made in the ocean from calcium and other minerals building up on the ocean floor :)
Iron rich volcanic rock that makes up much of the ocean floor is?
The volcanic rock that makes up most of the ocean floor is called sediment.
The magnetic record in the rock on the ocean floor depends on when the rock was?
i dont know
