What happens to the asthenosphere when increased heat flux emerges from mantle plume zones?

💡 Explanation

Partial melting happens within the asthenosphere above mantle plumes due to a decrease in pressure and increased temperatures. The process of decompression melting lowers the rock's melting point, therefore partial melting occurs readily rather than crystallization or density increase.

• If a pollutant that biomagnifies is introduced into an ecosystem, which consequence follows at higher trophic levels?
• If a pressure gradient force directs air southward from the North Pole, which consequence follows due to Earth's rotation?
• What happens to the sediment composition of a coastal mangrove forest when there's an increase in the rate of root pneumatophore growth?
• Why does branching coral growth decrease with increasing depth in a coral reef environment?
• A massive influx of freshwater from melting glaciers into the North Atlantic alters seawater density; which consequence follows?
• If coarse sand is deposited above a layer of fine silt in an unconfined aquifer, which consequence follows?