As you went deeper the sediment.
Sea floor spreading concept map.
By the use of the sonar hess was able to map the ocean floor and discovered the mid atlantic ridge mid.
Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.
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.
Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor.
Seafloor spreading is a key concept to the theory of continental drift.
Based on this week s readings and lectures construct a concept map that diagrams this geological process.
2 9 how do sediment cores from the ocean floor support the concept of seafloor spreading.
Seafloor spreading was proposed by an american geophysicist harry h.
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.
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 theory later became known as sea floor spreading.
Seafloor spreading is what operates the system.
Newer oceanic floor was near the ridge crest.
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.
In addition he found that the deepest parts of the oceans were very close to.
These age data also allow the rate of seafloor spreading to be determined and they show that rates.
Spreading rate is the rate at which an ocean basin widens due to seafloor spreading.
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.
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.
