Multiple Melting of a Heterogeneous Mantle and Episodic Accretion of Oceanic Crust in a Spreading Zone: Zircon U-Pb Age and Hf-O Isotope Evidence from an Oceanic Core Complex of the Mid-Atlantic Ridge

Geological Theory versus Plate Tectonics. A Comment to the paper by V.V. Gordienko «About Geological Theory»

“…However, in addition to these zircons , there are zircons of other age groups (6.7�11.2 Ma, 12.9 �17.6 Ma) [Lissenberg, 2009;Bortnikov et al, 2019] and even zircons of the Proterozoic-Archean age (2�3.2 Ga [Kostitsyn et al, 2015;Bortnikov, 2019]. Bortnikov et al [2022] showed that these are relics of the oceanic lithospheres, which during the magmatic evolution of the MAR rift valley were involved in the partial melting of the mantle. According to V.V.…”