Geochemical and isotopic analyses of mafic lavas, Bufumbira (Virunga Volcanic Province, Uganda)

This dataset presents new major element data, select trace element ratios and Sr-Nd-Pb-Hf-He isotopic results for a suite of mildly alkaline mafic lavas from the Bufumbira volcanic field in SW Uganda. Bufumbira defines the northeastern terminus of the Virunga Volcanic Province and comprises numerous apparently monogenetic cinder cones. The new data are used in conjunction with published major and trace element analyses (Pitcavage et al., 2021, Lithos 396, 106192) to document the multi-stage metasomatic history of the underlying subcontinental lithospheric mantle.

本数据集提供了乌干达西南部布丰比拉火山场（Bufumbira volcanic field）一套弱碱性镁铁质熔岩的全新主量元素数据、精选微量元素比值及锶-钕-铅-铪-氦（Sr-Nd-Pb-Hf-He）同位素分析结果。布丰比拉构成维龙加火山省（Virunga Volcanic Province）的东北端，由众多看似单成因的火山渣锥组成。这些新数据与已发表的主量及微量元素分析数据（Pitcavage等人，2021年，《岩石学》（Lithos）第396卷，106192页）相结合，用于揭示下伏陆下岩石圈地幔的多阶段交代历史。