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Deep ocean trenches were found near some of the continental landmasses, particularly around the edges of the Pacific. It turned out that some of the deepest parts of the ocean are actually near some of the continents, and out in the middle of the oceans the water is relatively shallow because of the underwater mountains. Volcanic activity and lots of heat were discovered near the underwater mountains. With this new information, H. H. Hess, an American geologist, presented the hypothesis of seafloor spreading.
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What is one piece of evidence that supports sea floor spreading?
Formation of new ocean/sea floor at the edges or divergence/separation.
Strips of alternating magnetic polarities found in rocks in the ocean basin?
provide evidence for sea-floor spreading
What geographical features provide evidence for plate tectonics?
Mountains, Valleys, Sea Floor Spreading, Trenches in the Ocean!
Why did arthur Holmes think the sea floor was spreading?
Spreading Of ocean floor
How is pillow lava evidence of sea-floor spreading?
Evidence shows that molten material erupts through this valley. The material then hardens to form the rock of the ocean floor.-Answered by Nadezda Dimsoski
What is sea floor spreading and what evidence do we have to prove it is happening?
Magnetic minerals on the ocean floor.
How sea floor spreading provide evidence for tectonic plates?
by the plate tectonic and the ocean bridges
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 is a spreading center on the ocean floor?
sea floor-spreading..;)
What evidence in rocks supports the theory 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 is one piece of evidence that supports sea floor spreading?
Formation of new ocean/sea floor at the edges or divergence/separation.
What three pieces of evidence for Wegener's theory came from the sea floor?
seafloor spreading, age of the sea floor and ocean trenches.
Strips of alternating magnetic polarities found in rocks in the ocean basins?
provide evidence for sea-floor spreading
How do rocks along central valley of mid ocean ridge provide evidence of sea floor spreading?
because
Strips of alternating magnetic polarities found in rocks in the ocean basin?
provide evidence for sea-floor spreading
What geographical features provide evidence for plate tectonics?
Mountains, Valleys, Sea Floor Spreading, Trenches in the Ocean!
Strips of alternating magnetic polarities found in rocks in the ocean basins .?
provide evidence for sea-floor spreading
