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Aluminous websterite and granulite xenoliths from the Chyulu Hills volcanic field, Kenya: Gabbro–troctolitic cumulates subjected to lithospheric foundering
Whole rock major and trace element abundances in aluminous garnet-spinel websterite, sapphirine-bearing Mg-Al granulite and hibonite-bearing Ca-Al granulite xenoliths from the Chyulu Hills volcanic field, Kenya, suggest that the samples represent a metaigneous suite linked by fractionation. The incompatible major element contents increase from the websterites to the Mg-Al granulites and further to the Ca-Al granulites. High bulk rock Mg#s and very low concentrations of most incompatible tracedoi:10.3929/ethz-b-000022463 fatcat:q4d76g76zrfxvgv37wxgl7y5y4