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Q: Magnetic alignment of rocks in mid-ocean ridge?
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What has reversed itself many times which is proven by the alignment of iron minerals?

The Earth's magnetic field. This is proven by measuring the magnetic orientation of the rocks as you move away from the Mid ocean Ridge.


How does paleomagnetism help to explain plate tectonics?

Strips of oceanic crust on either side of the mid-oceanic ridge mirror the magnetic alignment of their mirror image on the other side of the ridge. Their specific magnetic alignment was formed at the time of solidification from magma. This stripe pattern in the mirror images of crust on either side of the mid-oceanic ridge indicates that new crust is being formed at the same time on both sides of the ridge simultaneously. This is the mechanism of plate movement.


How do magnetic stripes show Earth's history of magnetic fields?

As you move away from an ocean ridge, the rocks get older.


How do magnetic stripes show the history of Earth's magnetic field?

as you move away from an ocean ridge the rocks get older


The alignment of iron minerals in rocks when they are formed reflects the fact that Earth's has reversed itself several times in the past?

magnetic field.


How are the rocks organized on the mid-Atlantic ridge?

They are arranged in a pattern with magnetic strips having reversed polarities.


Is the pattern of magnetic stripes in rocks on either side of a mid-ocean ridge the same?

its the same on either side of the mid-ocean ridge


The alignment of iron minerals in rocks when they are formed reflects the fact that Earth's has reversed itself several times in the past.?

magnetic field..


How do rocks along the central valley of the mid ocean ridge provide evidence for sea floor spreading?

because the scientists found that the farther the rocks the older the rocks were. so the youngest rocks were found near the mid-ocean ridge. this showed that sea-floor spreading took place. +++ The primary evidence is "magnetic striping": remnant magnetising by the Earth's magnetic field of the iron compounds in the basalt forming the ocean floor. The magnetic traces are parallel to the spreading-ridges, and their polarity reflect the field's periodic reversal. The further from the ridge, the older the stripes. The rock is imprinted with the magnetism as it cools below a certain point in being eruped along the ridge.


How do rocks along the central valley of the mid-ocean ridge provide evidence of the sea-floor spreading?

Magnetic field direction.


The alignment of iron-bearing minerals in rocks when they formed reflections the fact that earths has reversed itself several times in its past?

magnetic field .


How are magnetic patterns in sea floor rock evidence of seafloor spreading?

Magnetic alignment of rocks, in alternating strips that run parallel to ridges, indicates reversals in Earth's magnetic field and provides further evidence of seafloor spreading.