The residue that remains after a given element has been removed from peridotite to form a basalt melt. The incompatible elements (e.g. Rb, U, and rare earth elements) are preferentially partitioned into a melt, and during crustal formation these elements in particular have been removed from the mantle, leaving the mantle depleted in incompatibles. Compare undepleted mantle.
Subjects: Earth Sciences and Geography.