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Why did magnetic reversals on the seafloor support seafloor spreading?
Earth got its north and south Pole's have geographic and magnetic north and south poles which makes an angle of nearly 5.6degree. magnetic field created due to core of earth is reversed during each 100 million year period. ie.magnetic north becomes south and vice's. seafloor spreading is a continuous event so for each 100my spread seafloor we get opposite polarised magnetic substances. That is called magnetic reversal
About sea floor spreading?
Sea-floor spreading is what happens when the plates in the earth's crust move apart. During this movement of the plates, magma wells up from deep within the earth and fills in the cracks, forming a new oceanic crust, or sea-floor.
How does Leonardo da Vinci fit in this time period?
Leonardo da Vinci lived during the Renaissance, a time when individual thinking was spreading from florence to the rest of western Europe. Leonardo was able to become so well known because of idea that all men should have a voice during this time.
Why do you pass out during a tattoo?
It is a results of shock. Your body is being harmed by having foreign pigments injected into it. The body reacts by slowing blood flow to the brain, causing fainting.
Can i wear hair spray during a ct scan?
No, it is not recommended to wear hair spray during a CT scan. Hair spray contains chemicals that can interfere with the imaging process and may affect the quality of the scan results. It is important to follow the instructions provided by the healthcare facility to ensure accurate imaging and diagnosis.
Each cycle of spreading and intrusion of magma during seafloor spreading results in?
the formation of new oceanic crust. Magma rises to the surface at mid-ocean ridges, solidifies upon contact with seawater, and creates new crust as it spreads horizontally away from the ridge axis. This process continually adds new crust to the ocean floor as tectonic plates move apart.
How are seafloor spreading and continental drift related?
Seafloor spreading is a key component of the theory of continental drift. As new oceanic crust forms at mid-ocean ridges during seafloor spreading, it pushes the existing crust outward on both sides of the ridge. This movement can help explain how continents have shifted positions over time due to the movement of tectonic plates.
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.
Is the following sentence true or false when solid mantle rock rises during seafloor spreading magma is produced as a result of decompression melting?
True. When solid mantle rock rises during seafloor spreading, the decrease in pressure causes decompression melting, resulting in the production of magma. This magma can then rise to the surface and form new oceanic crust.
Why did magnetic reversals on the seafloor support seafloor spreading?
Earth got its north and south Pole's have geographic and magnetic north and south poles which makes an angle of nearly 5.6degree. magnetic field created due to core of earth is reversed during each 100 million year period. ie.magnetic north becomes south and vice's. seafloor spreading is a continuous event so for each 100my spread seafloor we get opposite polarised magnetic substances. That is called magnetic reversal
What type of formation is a mid-oceanic ridge?
Its mostly a basaltic formation, caused as a result of ferromagnetic magmatic emergence at zones of seafloor spreading during oceanic-oceanic divergence.
What do pieces of oceanic crust do during sea floor spreading?
During sea floor spreading, pieces of oceanic crust move apart as new magma rises to the surface at mid-ocean ridges. As the crust spreads, it carries with it the magnetic signature of Earth's magnetic field, providing evidence for the process of seafloor spreading.
Did harry hess find the mid-ocean ridge?
Yes, Harry Hess proposed the theory of seafloor spreading and the existence of mid-ocean ridges during the 1960s. His work significantly contributed to the development of the theory of plate tectonics.
In the process of sea floor spreading what happens when magma rises to the earths surface and solidifies?
Yes. Seafloor spreading is the term given to the creation of new seafloor at divergent boundaries. At a divergent boundary, two oceanic plates move apart, which obviously means that something must then surface to fill the void. This is where the magma rises from the Earth's interior and cools to become seafloor. On the other end, at convergent boundaries, the old seafloor is forced under the continental plates, where it is recycled back into the Earth's magma supply.
During the intrusion of the Palisades Sill contact metamorphism changed sandstone and shale into what?
During the intrusion of the Palisades Sill, contact metamorphism changed sandstone and shale into quartzite and hornfels. Quartzite forms from the recrystallization of quartz sandstone, while hornfels forms from the alteration of shale due to high temperatures and pressures near the igneous intrusion.
How is crustal rock heated inside the mantle?
Crustal rock is heated inside the mantle during divergent boundaries where new crust is generated as the plates pull away from each other. In mid-ocean, this movement results in seafloor spreading and the formation of ocean ridges; on continents, crustal spreading can form rift valleys.
What significant tectonic activity occurred during the Mesozoic?
During the Mesozoic era, significant tectonic activity included the breakup of the supercontinent Pangaea, which led to the formation of the Atlantic Ocean through the process of seafloor spreading. This era also experienced the opening of the Tethys Sea and the formation of the Western Interior Seaway in North America.
