Subduction and sea floor spreading are processes that could alter the size and form of the ocean.
Sea floor spreading occurs at what type of boundary.
This mainly happens on the ocean floor and results in mid ocean ridges.
The following features are shown at example depths to scale though each feature has a considerable range at which it may occur.
Due to this continuous seafloor spreading occurs and makes atlantic ocean floor to be connected to other continental crust making the ocean gets wider over the time.
Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor.
For instance the atlantic ocean is believed to be expanding because of its few trenches.
Continental shelf 300 feet continental slope 300 10 000 feet abyssal plain 10 000 feet abyssal hill 3 000 feet up from the abyssal plain seamount 6 000 feet.
The magnetic patterns of the earth reverse themselves every 400 to millions of years.
Spreading rates determine if the ridge is fast intermediate or slow.
See also continental drift a veritable legion of evidence supports the seafloor spreading hypothesis.
The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american.
What did scientist use to prove the the seafloor was spreading apart.
The age of the sea floor also supports sea floor spreading.
The discovery of such magnetic stripes provided powerful evidence that sea floor spreading occurs.
What plate boundary and type of earth s crust from folded mountains.
This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level.
It is a type of plate boundary that move away from euchre s a result of the spreading of boundaries new ocean floor is created.
Spreading rate is the rate at which an ocean basin widens due to seafloor spreading.
At this point tectonic plates pull away from each other and the gaps fills with magma from the mantle.
Seafloor spreading occurs at a diversion boundary.