Isotopic and trace element geochemistry of the Seligdar magnesiocarbonatites (South Yakutia, Russia): Insights regarding the mantle evolution beneath the Aldan-Stanovoy shield

•The Seligdar carbonatites were overprinted by hydrothermal and metamorphic events.•Carbonatites are dominated by a component derived from an enriched mantle source.•The enriched mantle source was separated from the depleted mantle reservoir at the Archean period.