The formation of the new crust is due to the rising of the molten material magma from the mantle by convection current.
Sea floor spreading drawing.
Sea floor spreading.
Sea floor drawing.
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.
The mid ocean ridge is the region where new oceanic crust is created.
This video goes over the process of sea floor spreading and the evidence that supports this theory.
Seafloor spreading happens at the bottom of an ocean as tectonic plates move apart.
The seafloor moves and carries continents with it.
Get 10 free shutterstock images pick10free.
Seafloor spreading is a process that occurs at mid ocean ridges where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.
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.
Earlier theories by alfred wegener and alexander du toit of continental drift postulated that.
The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed.
Learn more about sea floor spreading and how it works with this demo.
Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor.
The motivating force for seafloor spreading ridges is tectonic plate pull rather than magma pressure although there is typically significant magma activity at spreading ridges.
The process of sea floor spreading.
At ridges in the middle of oceans new oceanic crust is created.
For students who finished early katy offered a model of sea floor spreading for them to experiment with for an extra page in their books.
Free background music no copyright music brvtvs dead times freebackgroundmusic webs.
Sea floors cartoons.
Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate it is composed of the upper oceanic crust with pillow lavas and a dike complex and the lower oceanic crust composed of troctolite gabbro and ultramafic cumulates.