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Caused by changes in earth's magnetic field over time, especially reversals of the magnetic poles.
What else can I help you with?
Is ocean floor smooth?
The ocean floor is not smooth.The ocean floor is made up of rocks, ledges and ditches.
The youngest rocks on the ocean floor are located where?
The youngest rocks on the ocean floor are located at mid-ocean ridges. These ridges are always found at divergent boundaries.
Why do you think that old rocks are rare one ocean floor?
There are no rocks on the ocean floor because they turn to sand. The moving of the water gradually wears away at the rocks.
Where can you find the youngest rocks on the ocean floor?
The youngest rocks on the ocean floor are typically found along mid-ocean ridges. These areas are where new oceanic crust is formed through volcanic activity and the process of seafloor spreading. As the magma cools and solidifies, it creates new rocks that are relatively young compared to rocks found in other parts of the ocean floor.
How do rocks along the central valley of the mid-ocean ridge provide evidence of the sea-floor spreading?
Rocks along the central valley of the mid-ocean ridge show a pattern of alternating polarity, indicating reversals in Earth's magnetic field. This pattern is caused by the cooling of magma at the ridge, locking in the magnetic orientation at the time of solidification. By studying the magnetic properties of these rocks, scientists can determine the rate of sea-floor spreading and the age of the oceanic crust.
What if old rocks are rare are on the ocean floor?
It is believed that old rocks are rare on ocean floors bevause the floor has manny remains and we are not unable to reach them
What will you find on the ocean floor?
sand,rocks
What is an ocean floor?
broken up rocks
The youngest rocks in the ocean floor are located at the mid ocean?
Ridges
How magnetic symmetry can be used as evidence of sea floor spreadding?
On each side of the mid-ocean ridge is a mirror of the striped pattern on the other side. When drawn, these patterns show alternating bands of normal and reverse polarity that match the geomagnetic reversal time scale, scientists can assign ages to the sea-floor rocks. The youngest rocks were at the center, and the older rocks father away. The ages of the sea floor rocks are symmetrical. The only place on the ocean-floor where new rocks are formed are at the rift in mid-ocean ridge. hope this helps :)
What is an ocean floor sediment?
broken up rocks
How do you obtain samples of ocean floor rocks?
mud
