Ultrapotassic rocks of the Bohemian Massif: Subduction-related magmas or melting products of heterogeneous subcontinental mantle?

Abstrakt

Composition of Variscan ultrapotassic rocks (durbachites, minettes etc.) from the Bohemian massif reflects highly refractory but subsequently strongly enriched mantle sources that could represent old domains of the subcontinental lithospheric massif.