Ultra-Low Velocity Zones and Thermochemical Piles (IMAGE)

Arizona State University

Ultra-Low Velocity Zones and Thermochemical Piles

Caption

Tiny regions of compositionally distinct rock (red material, known as ultra-low velocity zones), collect at Earth's core-mantle boundary (tan surface), nearly halfway to the center of our planet. Small accumulations of this distinct rock collect near the margins of large thermochemical piles (green) that reside at the base of Earth's mantle.

Credit

Edward Garnero/ASU

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