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oceanic crust that was farther away from a mid-ocean ridge was older than crust closer to the ridge
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∙ 10y ago
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What evidence can prove that the ocean floor was moving?
Oceanic crust that was farther away from a mid-ocean ridge was older that crust closer to the ridge
Why was the discovery of no rocks older than 2billion years old on the ocean floor so important?
It is an indication that the ocean floor is moving, being created by rifting and destroyed by subduction, thus providing evidence of plate tectonics and continental drift.
What is sea floor spreading and what evidence do we have to prove it is happening?
Magnetic minerals on the ocean 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 do scientist know that the continents are moving?
the ocean sea floor is spreading
How a prediction and then evidence of magnetism in rocks on the ocean floor proved that the seafloor spreads?
The Earth's magnetic reversals have been recorded in newly forming oceanic seafloor basalt by the orientation of magnetic minerals which become frozen in place as the magma hardens. When the next reversal occurs, it as well becomes part of the ocean floor magnetic record.
What does produce when sea floor spreading occur?
An ocean because when the ocean spread out the ocean floor is moving and becoming large but because also of the sinking of the ocean floor it 's not becoming larger it's just maintaining it own size. lyssa
What is on the ocean floor if the tectonic plates are moving towards each other?
a trench
What are some features of the ocean floor that provide evidence for plate tectonics?
they found fossils
What are two pieces evidence for cracks in the ocean floor?
molten material and drilling samples
Why do you think that old rocks are rare one ocean floor?
There are no rocks on the ocean floor because they turn to sand. The moving of the water gradually wears away at the rocks.
When was the first concrete evidence found to support the theory that new ocean crust formed at vents in the ocean floor?
1977!
