Seafloor Spreading created by harry hess
sea-floor spreading
Seafloor spreading is the geologic process that forms new crust on the ocean floor. This occurs at mid-ocean ridges, where tectonic plates move apart and magma rises to the surface, solidifying to form new oceanic crust.
A mid-ocean ridge forms as tectonic plates move apart, creating a gap where magma rises from the mantle to form new crust. This process is known as seafloor spreading and results in the continuous growth of the ocean floor.
Extrusive igneous rock- Sometimes lava erupts and flows from long cracks in the earths crust called fissures. Lava flows from fissures on the ocean floor at places where tension is causing the ocean to be pulled apart. This lava cools to form new ocean floor. Hope it helps.
The first step in the process of sea-floor spreading occurs at mid-ocean ridges, where tectonic plates begin to diverge. As the plates pull apart, magma from the mantle rises to fill the gap, creating new oceanic crust. This process not only forms new seafloor but also leads to volcanic activity at the ridge. The formation of new crust pushes older crust away from the ridge, contributing to the expansion of the ocean floor.
sea-floor spreading
Plate tectonics.
Plate tectonics.
Seafloor Spreading created by harry hess
Seafloor Spreading created by harry hess
Seafloor spreading where new floor is formed. Subduction zone where older floor is pushed back into the mantle.
a normal fault
A normal fault would form.
A normal fault would form.
Seafloor spreading is the geologic process that forms new crust on the ocean floor. This occurs at mid-ocean ridges, where tectonic plates move apart and magma rises to the surface, solidifying to form new oceanic crust.
New crust forms on the ocean floor through seafloor spreading, where magma rises up from the mantle through mid-ocean ridges and solidifies into new crust as tectonic plates move apart.
It causes what we call "sea-floor spreading." Sea-floor spreading is the process in which the ocean floor is extended when two plates move apart. As the plates move apart, the rocks break and form a crack between the plates. Earthquakes occur along the plate boundary. Magma rises through the cracks and seeps out onto the ocean floor like a long, thin, undersea volcano.