Mid-Ocean Ridge Magmatism: By far, the dominant type of lava resulting from magmatic activity at mid-ocean ridges is basalt, also called mid-ocean ridge basalt (MORB). However, small amounts of other extrusive magma types (predominantly andesite, dacite, and picrite) also erupt there.
Q. What do you expect to find in mid-ocean ridge?
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.
Table of Contents
- Q. What do you expect to find in mid-ocean ridge?
- Q. What allows the magma to cool off and harden after rising up through the crack of a mid-ocean ridge?
- Q. What two processes happen at mid-ocean ridges?
- Q. What is the role of the mid-ocean ridge in the movement of lithosphere plates?
- Q. What process causes volcanoes to form along the Mid-Ocean Ridge?
Q. What allows the magma to cool off and harden after rising up through the crack of a mid-ocean ridge?
Because the ridge is the site of focused volcanic activity, seawater circulates actively to cool the new crust. This heated water reacts with the volcanic rock, dissolving out metals and depositing them around seafloor hot springs.
Q. What two processes happen at mid-ocean ridges?
There are two processes, ridge-push and slab-pull, thought to be responsible for the spreading seen at mid-ocean ridges, and there is some uncertainty as to which is dominant. Ridge-push occurs when the weight of the ridge pushes the rest of the tectonic plate away from the ridge, often towards a subduction zone.
Q. What is the role of the mid-ocean ridge in the movement of lithosphere plates?
The mid-ocean ridge represents an area where, in accordance with plate tectonic theory, lithospheric plates (also called tectonic plates) move apart and new crust is created by magma (molten rock) pushing up from the mantle . …
Q. What process causes volcanoes to form along the Mid-Ocean Ridge?
When oceanic plates diverge in a diverging plate boundary, the rift valley in the center contains cracks in which the lava pours out in the ocean floor. When the solidified lava builds up, it creates a volcano.
