Based on this week s readings and lectures construct a concept map that diagrams this geological process.
Sea floor spreading concept map.
The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate.
By the use of the sonar hess was able to map the ocean floor and discovered the mid atlantic ridge mid.
Spreading rate is the rate at which an ocean basin widens due to seafloor spreading.
The mid ocean ridge is where the seafloor spreading occurs in which tectonic plates large slabs of earth s lithosphere split apart from each other.
These age data also allow the rate of seafloor spreading to be determined and they show that rates.
Spreading rates determine if the ridge is fast intermediate or slow.
According to this theory the floor of the ocean is moving or spreading away from ridges by repetitive magma intrusion that split and spread the older sea floor causing them to be moved away from the ridge in a nearly continuous horizontal position.
As you went deeper the sediment.
Seafloor spreading is what operates the system.
Newer oceanic floor was near the ridge crest.
Seafloor spreading was proposed by an american geophysicist harry h.
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.
2 7 describe the relative motion along a transform plate boundary and locate several examples on a plate boundary map.
This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century.
The corner stone of plate tectonics is the theory of sea floor spreading.
Seafloor spreading is a key concept to the theory of continental drift.
In addition he found that the deepest parts of the oceans were very close to.
This theory later became known as sea floor spreading.
As upwelling of magma continues the plates continue to diverge a process known as seafloor spreading samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre important evidence in favour of this process.
2 9 how do sediment cores from the ocean floor support the concept of seafloor spreading.
Hess discovered that the oceans were shallower in the middle and identified the presence of mid ocean ridges raised above the surrounding generally flat sea floor abyssal plain by as much as 1 5 km.
