We designed the mantle transects using the PTXFO2 diagrams (Ashchepkov et al., 2010(Ashchepkov et al., , 2013(Ashchepkov et al., , 2017) constructed (Figs. 1a-c) for mantle columns beneath kimberlite and sections of the lithospheric mantle (SCLM) under the Kaapvaal and the Congo cratons. The set of the pipes is in (Zinchenko et al., 2020.The PTXFO 2 diagrams (Ashchepkov et al., 2013) in South Africa were constructed using mainly analyses of garnets, eclogitic minerals and inclusions in diamonds in open publications. The subcalcic-type garnets mainly refer to the ancient low-temperature geotherms (35 mv/m 2 ) and higher-temperature inclusions of eclogite-pyroxenite type, giving convective geotherms crossing conductive ones, which reflects the migration process of apparently hybrid melts.Roberts Victor is a Mesozoic pipe 95 Ma famous due