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Isochrons on the sea floor are located where?

Isochrons on the sea floor are located at the mid-ocean ridges. They represent the age of the oceanic crust and are created as new crust forms at the ridge axis and moves away from it over time. Older crust is farther from the ridge, while younger crust is closer to the ridge.


Along the axis of some segments of the oceanic ridge system are deep down structured called?

The deep underwater structures along the axis of some segments of the oceanic ridge system are known as mid-ocean ridges. These ridges are characterized by volcanic and tectonic activity, and they are where new oceanic crust is formed as tectonic plates pull apart. The constant upwelling of magma at these ridges contributes to the continuous growth and spreading of the ocean floor.


The downward sliding characteristic of ridge-push is the result of?

gravity


If you could collect a sample of rock from the Mid-Atlantic Ridge where would you look to find the youngest rocks?

You would want to look for rocks at the center of the Mid-Atlantic Ridge, where new oceanic crust is forming through seafloor spreading. The rocks found closest to the ridge axis are typically the youngest, as they have most recently solidified from magma.


Where are the youngest rocks on the ocean floor typically found?

fault line


Where are oceanic crust and lithosphere formed?

Oceanic crust and lithosphere are formed at mid-ocean ridges through the process of seafloor spreading. Magma rises from the mantle and solidifies to create new oceanic crust at these divergent plate boundaries. As the new crust forms, it pushes the older crust away from the ridge axis, creating a continuous process of crust formation and movement.


What part of the earth are most similar to the plate with an axis angle of 0?

Plates with an axis angle of 0 degrees are most similar to mid-ocean ridges, where new oceanic crust is formed through volcanic activity and seafloor spreading. These plates move laterally apart from each other along the ridge axis due to the upwelling of mantle material, creating new crust in the process.


Why are tilted blocks of rock common along mid-ocean ridges?

Tilted blocks of rock along mid-ocean ridges are caused by the process of seafloor spreading. As new oceanic crust forms at the ridge axis, it pushes older crust away, creating faults and fractures that result in the tilting of blocks of rock. This tilting is a result of the spreading and rifting of the crust as it moves away from the ridge axis.


What observation has been made about the age of the basalt that forms a mid ocean ridge?

New magma of basalt composition emerges at and near the axis because of decompression melting in the underlying Earth's mantle.


The huge trough down the center of the mid-ocean ridge is where?

The huge trough down the center of the mid-ocean ridge is where two tectonic plates are moving apart. As they separate, magma rises up from the mantle to fill the gap, creating new oceanic crust. This process is known as seafloor spreading.


What is the primary evidence that forms the basis of seafloor spreading?

The primary evidence for seafloor spreading comes from magnetic striping patterns on the ocean floor. These patterns show alternating bands of normal and reversed polarity, indicating that new oceanic crust is being continuously formed at mid-ocean ridges and spreading away from the ridge axis.


Why do bands indicating magnetic reversals appear to be of similar width on both sides of a mid-ocean ridge?

They appear to be similar in width because new crust formation is nearly equal on each side of the fault.