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Forms by lava from volcanoes on the sea floor
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Where are the youngest rocks in sea-floor spreading?
The youngest rocks in sea-floor spreading can be found at the mid-ocean ridges, where new oceanic crust is formed. As tectonic plates pull apart, magma rises to the surface and solidifies, creating new rocks. These rocks are typically less than a few million years old.
How would the age of the oldest rocks on the continents compare with the age of the oldest rocks on the seafloor if the rock on the continents is continually formed but not removed?
The oldest rocks on the continents would be much older than the rocks on the sea floor because the rocks on the continents are not being removed unlike the rocks on the sea floor that are made by the mid-ocean ridge are being removed by deep ocean trenches. this prossess that is occuring on the sea floor is called sea floor spreading. evidence of this is the Pacific ocean shrinking and the Atlantic ocean growing.
How do ocean floor rocks and sediments are evidence of sea floor spreading?
Ocean floor rocks and sediments provide evidence of sea floor spreading through their age and magnetic orientation. As new magma rises at mid-ocean ridges, it cools and solidifies, forming new oceanic crust that is progressively younger the closer it is to the ridge. Additionally, the magnetic orientation of minerals in these rocks records the Earth's magnetic field reversals, which occur at regular intervals, creating a mirror image of magnetic patterns on either side of the ridge. This symmetrical pattern of age and magnetism supports the theory of sea floor spreading.
Process in which new sea floor forms as older sea floor is pulled apart?
sea-floor spreading
Why are magnet patterns important evidence for plate tectonics?
magnetic rocks on the ocean floor show that the Earths magnetic field has been frequently reversed forming new sea floor.
What happens in sea-floor spearding?
new rocks form
How does new ocean floor form?
Sea Floor Spreading!
Why are sea floor rocks so young?
Sea floor rocks are young because of the process of seafloor spreading at mid-ocean ridges. As new oceanic crust forms at the ridges, older rocks get pushed further away. This continuous process creates a relatively young age for the sea floor rocks, with the oldest rocks being around 200 million years old.
Where does new rock form on the floor?
Forms by lava from volcanoes on the sea floor
Where are the youngest rocks in sea-floor spreading?
The youngest rocks in sea-floor spreading can be found at the mid-ocean ridges, where new oceanic crust is formed. As tectonic plates pull apart, magma rises to the surface and solidifies, creating new rocks. These rocks are typically less than a few million years old.
How do rocks form from remains of animals?
Limestone is formed from the skeletal remains of minute sea creatures, laid down on the sea floor millions of years ago.
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 pushes up through rifts in the ocean floor and cools to form new sea floor?
sea floor spreading, boo. it's molten rockk from earth's coree. hope it helpped!! :)
How would the age of the oldest rocks on the continents compare with the age of the oldest rocks on the seafloor if the rock on the continents is continually formed but not removed?
The oldest rocks on the continents would be much older than the rocks on the sea floor because the rocks on the continents are not being removed unlike the rocks on the sea floor that are made by the mid-ocean ridge are being removed by deep ocean trenches. this prossess that is occuring on the sea floor is called sea floor spreading. evidence of this is the Pacific ocean shrinking and the Atlantic ocean growing.
How scientist date sea floor rocks?
looking at patterns
What are types of evidence that the sea floor is expanding?
Rocks have a north and south pole. The sea floor was discovered to have different magnetic poles on cracks in the ocean floor.
What is the process that creates new ocean crust to form molten rock?
Sea Floor Spreading
