Major, trace element and Sr-Nd isotope evidence for a sublithospheric mantle source for the Umkondo large igneous province

[Display omitted] •Umkondo large igneous province dominated by low-Ti doleritic-gabbroic sills with subordinate dyke swarms and lavas.•Sr-Nd isotopes and trace element data show that the Umkondo magmas are derived from a sublithospheric mantle source.•Evidence of subsequent lithospheric contaminatio...

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Bibliographic Details
Published in:Di xue qian yuan. 2024-01, Vol.15 (1), p.101719-291, Article 101719
Main Authors: Hayes, Ben, Ashwal, Lewis D., Khumalo, Khulekani B., Iaccheri, Linda M.
Format: Article
Language:English
Subjects:
Continental tholeiites
Kalahari craton
Low-Ti magma
Rodinia
Sublithospheric mantle sources
Umkondo large igneous province
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Summary:[Display omitted] •Umkondo large igneous province dominated by low-Ti doleritic-gabbroic sills with subordinate dyke swarms and lavas.•Sr-Nd isotopes and trace element data show that the Umkondo magmas are derived from a sublithospheric mantle source.•Evidence of subsequent lithospheric contamination of the sublithospheric mantle-derived magmas.•The Umkondo sills support a connection between the Kalahari craton and the Grunehogna terrane during the initial assembly of Rodinia. The Mesoproterozoic (1.11 Ga) Umkondo large igneous province (LIP) in southern Africa and Antarctica was emplaced in 
ISSN:1674-9871
DOI:10.1016/j.gsf.2023.101719