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How do magnetic minerals get locked into different directions in the seafloor?
Wiki User
∙ 12y ago
molten material rises and erupts at the same time older rock on the ocean floor moves outward on both sides of the ridge. As material cools it forms a strip of solid rock in the center of the ridge.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoThe magnetic stripes on the sea floor are not visible, of course, except with the aid of a magnetometer. The stripes represent the magnetic orientation of Earth at the time of the oceanic crust's formation at the mid-ocean ridges.
Wiki User
∙ 8y agoThey formed from when Earth's poles reversed and the rocks were forming. They show what direction Earth's magnetic field was at the time that the rock hardened.
Wiki User
∙ 9y agoThey don't. You may have a misunderstanding of magnetic fields.
Wiki User
∙ 12y agobecause it is very strong seafloor.
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Bands of rock the seafloor showing alternating magnetic orientation indicate earth's magnetic field has?
reversed itself in the past. hth :)
What occurs at divergent boundaries and creates new seafloor?
At divergent plate boundaries the spreading of the tectonic plates results in the reduced pressure of the underlying magma. As the spreading continues, lava fills in the area of spreading and cools, becoming the newest addition to the seafloor. This process occurs at a steady rate ranging from a few centimeters to several centimeters of new sea floor each year. However, at a different location opposite the newly formed seafloor are convergent plate boundaries where land and seafloor is destroyed to make room for new seafloor.
What is the idea that continents have moved horizontally through the seafloor to their current locations?
seafloor spreading by Harry Hess
Places where the seafloor is forced under continental plates?
The region where the seafloor is forced beneath the continental plate is called a subduction zone. When the seafloor descends down it produces a deep-ocean trench.
What name is given to the seafloor?
Benthic Realm
How does magnetic reversals provide evidence for seafloor spreading?
Because of the stripes at the sea floor which are magnetic minerals
How do magnetic bands provide evidence that tectonic plates are moving apart at mid-oceanic ridges?
Through seafloor-spreading as iron rich minerals cool they become magnetized in the direction parallel to the existing magnetic field. As the magnetic fields change direction so will the magnetized minerals, allowing scientists to record each change in the seafloor as it spreads.
What properties of iron bearing minerals on the seafloor support the theory of seafloor spreading?
iron bearing minerals can record Earth's magnetic field direction. when Earth's magnetic field reverses, newly formed iron bearing minerals will record the magnetic reversal. magnetic reversals show new rock being formed at mid-ocean ridges. This helped explain how the crust could move
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 did the magnetic strips prove in seafloor spreading?
They proved that the seafloor was spreading.
First related the symmetrical magnetic patterns in seafloor basalts to seafloor spreading at a mid-ocean ridge?
Lawrence W. Morley, Frederick John Vine, and Drummond Hoyle Matthews were the first to tie magnetic stripe anomalies to seafloor spreading. The magnetic anomalies was the first evidence that supported the theory of seafloor spreading.
What geologic discovery in the 1960 provided the evidence to verify the occurrence of continental drift?
The discovery was the presence of magnetic stripes on the ocean floor which indicated that the seafloor was spreading, solidifying from melt, and the magnetic minerals contained therein were aligning themselves with the magnetic alignment of the Earth at the time of their solidification.
What do the magnetic stripes om the seafloor represent?
When Earth's magnetic poles have reversed themselves.
What structure on the seafloor would have magnetic striping?
astherosphere
How does magnetic stripes prove seafloor spreading?
ddd
What do magnetic anomalies provide evidence of?
seafloor spreading
What was the theory that was shown to be correct by age evidence and magnetic clues?
Magnetic Reversal
