Adjacent to the neovolcanic zone is one marked by fissures in the seafloor.
Seafloor spreading definition earth science.
It is 1 to 2 km 0 6 to 1 2 miles wide and is the site of recent and active volcanism and of the hydrothermal vents it is marked by chains of small volcanoes or volcanic ridges.
Convection currents within the mantle take the continents on a conveyor belt ride of oceanic crust that over millions of years takes them around the planet s surface.
Mantle convection is the slow churning motion of earth s mantle.
Seafloor spreading definition a process in which new ocean floor is created as molten material from the earth s mantle rises in margins between plates or ridges and spreads out.
In this section we are going to take alfred wegener s thoughts a little further.
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.
Convection currents also recycle lithospheric materials back to the mantle.
Sea floor spreading synonyms sea floor spreading pronunciation sea floor spreading translation english dictionary definition of sea floor spreading.
Geological science a series of processes in which new oceanic lithosphere is created at oceanic ridges spreads away from the ridges and returns to the earth s.
Seafloor spreading is a geologic process where there is a gradual addition of new oceanic crust in the ocean floor through a volcanic activity while moving the older rocks away from the mid oceanic ridge.
The neovolcanic zone is at the very axis.
Seafloor spreading is the mechanism for wegener s drifting continents.
The mid ocean ridge is where the seafloor spreading occurs in which tectonic plates large slabs of earth s lithosphere split apart.
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Convection currents carry heat from the lower mantle and core to the lithosphere.
Let s explore another idea called seafloor spreading.