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How would the history of reversals show itself on the ocean floor?
Wiki User
∙ 8y ago
"Stripes" of alternating magnetic field in the basalt rock of the seafloor.
Wiki User
∙ 8y ago
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How would this history of reversal show itself on the ocean floor?
it tugs on the iron pieces in the sand causing ripples.
Does geomagnetic reversals represent a source of information on the rate of sea-floor spreading?
As mid ocean ridges create new seafloor over extended periods of time, the magnetic poles of the Earth reverse back and forth. The rocks on either side of a mid ocean ridge show the opposite magnetisms and appear striped. From knowing the approximate ages of these magnetic reversals, one can estimate the approximate age of each stripe.
How do earths magnetic pole reversals provide evidence for tectonics?
rocks get older as you move away from ocean ridges
Why are diatom shells found in ocean-floor sediments?
diatom shells settle on the ocean floor from the surface
Explain the process by which new sea floor forms at mid-ocean ridges?
as it spread away from a mid-ocean ridge, the sea floor carries with it a record or magnetic reversals. i hope this answer would be correct :) also, when the magma rises through fractures in the sea floor at the mid-ocean ridge, the magma cools and forms new rocks. this new rock takes place of the old rock and the old rock gets pulled away.
How would this history of reversals show itself of the ocean floor?
it tugs on the iron pieces in the sand causing ripples.
How would this history reversals show itself on the ocean floor?
it tugs on the iron pieces in the sand causing ripples.
How would this history of reversal show itself on the ocean floor?
it tugs on the iron pieces in the sand causing ripples.
What has cause the zebra pattern in the rock of ocean floor?
Caused by changes in earth's magnetic field over time, especially reversals of the magnetic poles.
What has caused the zebra pattern'' in the rock of the ocean floor?
Caused by changes in earth's magnetic field over time, especially reversals of the magnetic poles.
What has caused the zebra pattern in the rocks of the ocean floor?
Caused by changes in earth's magnetic field over time, especially reversals of the magnetic poles.
What are pole reversals?
The direction of the Earth's magnetic field has reversed several times during its history. This causes the North magnetic pole to become a South magnetic pole and vice versa. We know this because of the direction of magnetism in the rocks on the ocean floor, which alternates in 'stripes' on either side of the mid-ocean ridges.
How is sea floor spreading confirmed?
A long time since my degree but I believe the orientation of minerals in the rocks either side of the mid ocean ridge, which regularly invert due to polar reversals, are mirrored confirming that the ridge is opening / the sea floor is spreading.
Explain the process by which new sea floor forms at mid ocean ridges?
as it spread away from a mid-ocean ridge, the sea floor carries with it a record or magnetic reversals. i hope this answer would be correct :) also, when the magma rises through fractures in the sea floor at the mid-ocean ridge, the magma cools and forms new rocks. this new rock takes place of the old rock and the old rock gets pulled away.
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 is the youngest material at the bottom of the ocean floor?
I'm assuming you're talking about the ocean floor itself (the earth's crust). The youngestmaterialat the bottom of the ocean is at the riffs between two plates. The mid-Atlantic riff is a good example.
On the real ocean floor alternating stripes of normal and reversed polarity are not all of equal width. What does this tell you about the lengths of time represented by normal and reversed polarity?
It would indicate that the length of time between reversals is not predictable.
