Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46895 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ MORB-like mantle beneath Lanzerote Island, Canary Islands MORB-like mantle beneath Lanzerote Island, Canary Islands Grachev A F Grachev A F Schmidt United Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia ru Schmidt United Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia ru 12 3 1 7 10 11 2021 https://ras.editorum.ru/en/nauka/article/46895/view

Our newly obtained data on the He-Ar and Sr-Nd isotopic systematics of mantle xenolith and their host basalts suggest the absence of a mantle plume beneath Lanzerote Island. The R/Ra ratio of the xenoliths lies within the range typical of MORB. The He isotopic composition of basalts from Lanzerote Island provides evidence of the mixing of two sources: MORB and atmospheric. The He isotopic ratios of both the xenoliths and the basalts do not show any correlations with the Sr and Nd isotopic characteristics.

Our newly obtained data on the He-Ar and Sr-Nd isotopic systematics of mantle xenolith and their host basalts suggest the absence of a mantle plume beneath Lanzerote Island. The R/Ra ratio of the xenoliths lies within the range typical of MORB. The He isotopic composition of basalts from Lanzerote Island provides evidence of the mixing of two sources: MORB and atmospheric. The He isotopic ratios of both the xenoliths and the basalts do not show any correlations with the Sr and Nd isotopic characteristics.

 Lanzerote Island mantle xenoliths basalts He-Ar and Sr-Nd isotopes Lanzerote Island mantle xenoliths basalts He-Ar and Sr-Nd isotopes

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