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On a map of the seafloor the boundaries between normally magnetized oceanic crust and reversely magnetized oceanic crust are called?
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∙ 13y ago
isochrons
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∙ 13y ago
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What boundary creates seafloor spreading?
Divergent boundaries.
Which type of boundaries is seafloor created by?
Seafloor is created at divergent plate boundaries called the mid-ocean ridges.
Are all plate boundaries located along the margins of continents?
No. Many plate boundaries are on the seafloor far from continents and several are well within continents.
What states the youngest rocks of ocean floor are at a diverging boundaries moving outward?
seafloor spreading
What are underwater mountains found at divergent plate boundaries were the seafloor spreads apart?
a underwater mountain
Where does seafloor spreading happen?
along plate boundaries
What boundary creates seafloor spreading?
Divergent boundaries.
Which type of boundaries is seafloor created by?
Seafloor is created at divergent plate boundaries called the mid-ocean ridges.
Where are most divergent boundaries found?
On the seafloor. Yes, the mid oceanic ridges are all divergent boundaries.
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.
Are all plate boundaries located along the margins of continents?
No. Many plate boundaries are on the seafloor far from continents and several are well within continents.
What are underwater mountains found at divergent plate boundaries were the seafloor spreads apart?
a underwater mountain
What states the youngest rocks of ocean floor are at a diverging boundaries moving outward?
seafloor spreading
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 type of plate boundaries should the students study in order to understand seafloor spreading?
plate tectonics
What occurs at plate boundaries that are associated with seafloor spreading?
When seafloor spreading happens, a rift forms at the bottom of a ocean and separates to form new rock. This is an example of a divergent plate boundary
Does the theory of plate tectonics contain both seafloor spreading and continental drift?
Yes. The theory of plate tectonics is very broad, and it covers seafloor spreading, continental drift, plate boundaries and so on.
