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Shallow focus earthquakes are associated with what ocean floor feature?
mid-ocean ridges
Does theory continental drift state that new ocean crust is formed at ocean ridges and destroyed at deep sea trenches?
No, the theory is that Seafloor spreading state that the new ocean crust is formed at ocean ridges and is destroyed at deep sea trenches.
What is the primary site for sea floor spreading?
Sea floor spreading occurs at mid-ocean ridges
How is a mid-ocean ridge formed?
Mid-ocean ridges are formed from the uplift of newly formed oceanic crust by rising magma. As the ridge is slowly pushed away from the source of the heat by the addition of newer crust, it sinks and is no longer part of the ridge, being replaced by new ridge material. This process means that the rock comprising the ridges is among the most recent in geologic age. divergent boundaries
Why is the earth 4.6 billion years old but the oldest sea floor is only 180 millions years old?
Just as new sea floor forms at mid-ocean ridges, new sea floor is forced back into the mantle at abduction zones. The oldest seafloor is at east and west the edges of the Atlantic Ocean, dating to the breakup of Pangaea.
What is formed when divergence happens on the sea floor?
Mid ocean ridges
Use the words sea floor spreading and mid ocean ridges in a complete sentence?
Mid ocean ridges are the direct result of sea floor spreading.
Are there mountains ridges valleys and plains on the ocean floor?
Yes, the ocean floor can have mountain ridges, valleys, and plains. Mountain ridges are formed by tectonic activity, valleys may be created by the movement of tectonic plates, and plains can result from sedimentation and volcanic activity. These features are important in shaping the ocean floor's topography.
How are mid Atlantic ridges formed?
It was formed when there was linear gap formed below at the ocean floor... So when the hot magma came out from it, it began to cool and solidify forming mid atlantic ridges
The spreading of the ocean floor is what?
At the mid-ocean ridges, large underwater mountain ranges formed along diverging oceanic plates.
During which era could parts of the ocean floor have formed?
Parts of the ocean floor were formed during various geological eras, such as the Paleozoic, Mesozoic, and Cenozoic. For example, the mid-ocean ridges where new ocean floor is formed through volcanic activity are continuously active processes that have been occurring for millions of years.
As new sea floor is formed high spots are formed what are they called?
High spots formed as new seafloor is created are known as seamounts or underwater mountains. These features are often formed by volcanic activity or tectonic movement along mid-ocean ridges. Seamounts can vary in size and shape, with some rising thousands of feet from the ocean floor.
The youngest rocks on the ocean floor are located where?
The youngest rocks on the ocean floor are located at mid-ocean ridges. These ridges are always found at divergent boundaries.
How does sea floor spreading alter the shape of the ocean floor?
Sea floor spreading occurs when new oceanic crust is formed at mid-ocean ridges and pushes the existing crust apart. As the new crust cools and solidifies, it creates a symmetrical pattern where the ocean floor becomes wider. This process alters the shape of the ocean floor by creating a series of parallel ridges and valleys.
How do strip of magnetized rock on the ocean floor provide evidence of sea-floor spreading?
Strips of ocean-floor basalt record the polarity of earth's magnetic field at the time the rock formed. These strips form a pattern that is the same on both sides of the mid-ocean ridge. the pattern shows that ocean floor forms along mid-ocean ridges and then moves away from the ridge.
How are the ridge formed?
It was formed when there was linear gap formed below at the ocean floor... So when the hot magma came out from it, it began to cool and solidify forming mid atlantic ridges
Where is the newest ocean crust formed?
mid ocean ridges
