The planet is divided into the crust, the mantle, and the core. Continental rift zones, where a continent is being torn apart, feature magma located at intermediate depths of 20 to 80 kilometers.
Magma at Mid-Ocean Ridges: Shallow Depths of 5 to 20 Kilometers Beneath the Seafloor
This molten rock is not a uniform layer but exists in distinct zones, most notably within the asthenosphere, where temperatures and pressures allow for partial melting of rock. The crust is the thin, brittle outer layer where we live.
Within the upper part of the mantle, conditions are just right for rock to melt, creating the pockets and zones of magma. The Structure of the Earth's Interior To pinpoint where magma is located, one must first understand the layered structure of the Earth.
Magma at Mid-Ocean Ridges: Shallow Depths of 5 to 20 km
Magma resides in a specific region within the Earth known as the mantle, primarily within the upper mantle just below the rigid outer shell called the lithosphere. Under mid-ocean ridges, where plates are pulling apart, magma can be found as shallow as 5 to 20 kilometers below the seafloor.
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