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What phenomenon occurs as a result of seafloor spreading?
In 1960, seafloor spreading was hypothesized by Harry Hess of Princeton University. Seafloor spreading occurs at divergent boundaries and it is said to be the mechanism that operates along the oceanic ridge system to generate new seafloor. Thus, the result of seafloor spreading is the creation of new sea floor through the uplift of magma: magma raises from asthenosphere, new oceanic lithosphere moves from ridge, and it thickens, cools (becomes denser), and subsides.
Why is the seafloor young?
The seafloor is continuously being created at mid-ocean ridges through seafloor spreading, where tectonic plates move apart and magma rises from the mantle to create new oceanic crust. As a result, the oldest seafloor is only about 200 million years old, much younger than continental crust which can be billions of years old.
What is the zones places where the seafloor is forced under continents to drift?
These zones are known as subduction zones where tectonic plates collide, forcing one plate to be pushed beneath the other. This process leads to the formation of deep ocean trenches and can result in earthquakes, volcanic activity, and the creation of mountain ranges.
When the crust of the earth is thin and can be ruptured a what can be formed?
When the crust of the Earth is thin and ruptured, it can lead to the formation of rift valleys, such as the East African Rift. This process can also result in the formation of new ocean basins through seafloor spreading.
New oceanic lithosphere forms as a result of?
New oceanic lithosphere forms as a result of seafloor spreading at mid-ocean ridges. Magma rises from the mantle, solidifies at the mid-ocean ridge, and creates new oceanic crust. This process leads to the continuous expansion of the ocean floor.
How many centimeters does the seafloor move a year?
The movement of the seafloor can vary depending on the location, but on average it moves at a rate of a few centimeters per year. This movement is a result of plate tectonics and the process of seafloor spreading.
What is least likely to result from seafloor spreading?
bananas :~P
When solid mantle rock rises during seafloor spreading magma is produced as a result of decompression melting?
Yes, during seafloor spreading, when solid mantle rock rises due to plate tectonic forces, it experiences reduced pressure which leads to decompression melting. This process produces magma that eventually erupts onto the seafloor, creating new oceanic crust.
What happens to sediment when water slows down?
When water slows down, it loses its ability to transport sediment. As a result, the sediment will settle out of the water and accumulate on the riverbed or seafloor. This process is known as sedimentation.
What phenomenon occurs as a result of seafloor spreading?
In 1960, seafloor spreading was hypothesized by Harry Hess of Princeton University. Seafloor spreading occurs at divergent boundaries and it is said to be the mechanism that operates along the oceanic ridge system to generate new seafloor. Thus, the result of seafloor spreading is the creation of new sea floor through the uplift of magma: magma raises from asthenosphere, new oceanic lithosphere moves from ridge, and it thickens, cools (becomes denser), and subsides.
What are sparks and how do they contribute to the process of combustion?
Sparks are small, hot particles that result from friction or ignition. They contribute to the process of combustion by providing the initial heat needed to ignite a fuel source, such as gas or wood. This ignition starts a chain reaction that releases energy in the form of heat and light, sustaining the combustion process.
Why is the seafloor young?
The seafloor is continuously being created at mid-ocean ridges through seafloor spreading, where tectonic plates move apart and magma rises from the mantle to create new oceanic crust. As a result, the oldest seafloor is only about 200 million years old, much younger than continental crust which can be billions of years old.
What is the zones places where the seafloor is forced under continents to drift?
These zones are known as subduction zones where tectonic plates collide, forcing one plate to be pushed beneath the other. This process leads to the formation of deep ocean trenches and can result in earthquakes, volcanic activity, and the creation of mountain ranges.
What will eventually happen if a rift valley continues to pull apart?
If a rift valley continues to pull apart, it will eventually lead to the formation of a new ocean as the tectonic plates on either side of the rift separate completely. This process is known as seafloor spreading and can result in the creation of a mid-ocean ridge.
When the crust of the earth is thin and can be ruptured a what can be formed?
When the crust of the Earth is thin and ruptured, it can lead to the formation of rift valleys, such as the East African Rift. This process can also result in the formation of new ocean basins through seafloor spreading.
What are magnetic stripes on the seafloor?
Magnetic stripes on the seafloor are alternating bands of magnetized rock that form parallel to mid-ocean ridges. These stripes are a result of Earth's magnetic field changing direction over time and getting preserved in the rocks as they cool and solidify. They provide evidence for seafloor spreading and plate tectonics.
What happens to magma that rises though cracks on the seafloor?
When magma rises through cracks on the seafloor, it can result in the formation of underwater volcanic structures like mid-ocean ridges or seamounts. As the magma reaches the surface, it can solidify and create new oceanic crust through a process called seafloor spreading. Eruptions can also produce hydrothermal vents, which support unique ecosystems due to the extreme conditions.
