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Explain how the processes of sea-floor spreading and magnetic reversal produce bands of oceanic crust that have different magnetic polarities?
Based on earth's magnetic field, new oceanic crust that is created is polarized one way or the other at creation. The new crust is created by gaps between oceanic plates where magma comes out and hardens. This crust is pushed away from the spreading center by a few processes (if you want to learn more look up slab pull, slab suction and, most importantly, ridge push). Lets say the crust that is being created at a spreading center can have polarization N (north) or S (south). First crust with polarization N comes out, then after the magnetic poles flip crust with polarization S is coming out. This alternation of the crust that is being pushed from the spreading center causes the bands. You should look at some diagrams to understand it better.
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Strips of alternating magnetic polarities found in rocks in the ocean basin?
provide evidence for sea-floor spreading
What do strips of alternating magnetic polarities found in rocks in the ocean basins provide?
Strips of alternating magnetic polarities found in ocean basin rocks provide evidence for seafloor spreading and plate tectonics. These magnetic anomalies are formed as magma cools and solidifies at mid-ocean ridges, recording the Earth's magnetic field at that time. The symmetrical pattern of these stripes on either side of the ridge indicates that new oceanic crust is created and pushes older crust away, supporting the theory of continental drift. This contributes to our understanding of the dynamic nature of the Earth's lithosphere.
What did the magnetic strips prove in seafloor spreading?
They proved that the seafloor was spreading.
What is magnetic striping evidence of?
Magnetic reversals and sea floor spreading.
What do magnetic anomalies provide evidence of?
seafloor spreading
Strips of alternating magnetic polarities found in rocks in the ocean basin?
provide evidence for sea-floor spreading
What are strips of alternating magnetic polarities found in rocks in the ocean basins?
These strips are known as magnetic stripes, and they are formed by the alignment of magnetic minerals in the oceanic crust as it cools and solidifies. The alternating pattern of polarities reflects regular changes in Earth's magnetic field over time, providing evidence for seafloor spreading and plate tectonics.
Strips of alternating magnetic polarities found in rocks in the ocean basins .?
provide evidence for sea-floor spreading
What structure on the seafloor would have magnetic striping?
A mid-ocean ridge would have magnetic striping on the seafloor. This striping is caused by the alternating polarities of Earth's magnetic field recorded in the basaltic rocks as they cool and solidify at the mid-ocean ridge, providing evidence for seafloor spreading.
Strips of alternating magnetic polarities found in rocks in the ocean basins?
They are known as magnetic stripes and are formed as new sea floor is created at mid-ocean ridges. When molten rock solidifies, it preserves the direction of Earth's magnetic field at that time, creating a record of magnetic reversals in the oceanic crust. The alternating stripes of normal and reversed polarity provide evidence for seafloor spreading and plate tectonics.
What do strips of alternating magnetic polarities found in rocks in the ocean basins provide?
Strips of alternating magnetic polarities found in ocean basin rocks provide evidence for seafloor spreading and plate tectonics. These magnetic anomalies are formed as magma cools and solidifies at mid-ocean ridges, recording the Earth's magnetic field at that time. The symmetrical pattern of these stripes on either side of the ridge indicates that new oceanic crust is created and pushes older crust away, supporting the theory of continental drift. This contributes to our understanding of the dynamic nature of the Earth's lithosphere.
Where the Strips of alternating polarities found in rocks in the ocean basis?
Strips of alternating polarities found in rocks in the ocean basins are the result of seafloor spreading. When new oceanic crust is formed at mid-ocean ridges, iron minerals in the magma align with Earth's magnetic field. Over time, as the crust moves away from the ridge, these magnetic minerals preserve the direction of the Earth's magnetic field at that time, creating alternating stripes of normal and reversed polarity on the seafloor.
What is shown by magnetic minerals spreading from a mid-ocean ridge?
That magnetic minerals spreading from a mid-ocean ridge
What is shown by magnetic minerals spreading from mid ocean ridge?
That magnetic minerals spreading from a mid-ocean ridge
What is shown by magnetic minerals spreading from a mid ocean ridge?
That magnetic minerals spreading from a mid-ocean ridge
What did the magnetic strips prove in seafloor spreading?
They proved that the seafloor was spreading.
How are the north and south pole differeant?
One is north and one is south. Also they have opposite magnetic polarities.
