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What type of magmatic activity is characteristic of mid oceanic ridges?
Wiki User
∙ 15y ago
At mid-oceanic ridges, plates are pulled apart in two separate directions. This creates a gap (rift valley), allowing for warm, buoyant magma to rise to the surface and cool. As the magma cools, it creates ridges along the rift valleys. The elevation is caused by the excess amount of newly created, less dense oceanic crust. This crust occupies more volume, which causes it to be higher up than the surrounding, older crust.
Wiki User
∙ 15y ago
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What is a oceanic ridges?
a ridge in the ocean
Most igneous activity takes place where?
Along the mid oceanic ridges (sites of crustal generation)
What is oceanic ridges?
a ridge in the ocean
Places where new seafloor is being created?
New oceanic crust is being created at the mid-ocean ridges.
Where are the youngest portion of Earth's crust found?
The youngest parts of the Earth's crust are found in the oceanic crust. This crust is continuously being created at the mid-oceanic ridges.
What is mid - oceanic ridges?
mountainous topography
Where is oceanic crust created?
New oceanic crust is created at the mid-oceanic ridges, a divergent plate boundary.
What is the relationship between distance from the ridges and age of the crust?
At the oceanic ridges the age of igneous basalt rocks is approximately zero (as that is where they formed) and the rocks get older the farther away. The ages of sedimentary and metamorphic rocks does not correlate reliably with distance from the oceanic ridges like the ages of igneous rocks, because they can form anywhere not mainly at oceanic ridges. Igneous granite rocks are generally formed around continental volcanos not oceanic ridges.
A place where seafloor spreading occurs.?
2. Mid Ocean Ridges are the place where new crust is formed. 1. oceanic plates or oceanic crust
What physical feature occures along ocean trenches and ridges?
Magmatic upsurge from within the earths crust, and plumes.
What feature forms at diverging oceanic plates?
Ridges of buoyant oceanic crust form at diverging oceanic plate boundaries.
Is it true that The Atlantic and Pacific basins have oceanic ridges and the Indian Ocean has no oceanic ridge?
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