Shock-metamorphozed and brecciated crystalline target rocks composing the central uplift of Puchezh-Katunki impact structure were subjected to strong thermal annealing. Recrystallization and blutesis took place at the temperatures which significally exceed the post-shock ones and produced the incipient melting. The new-formed rocks - coptoblastolithes - are characterized by mainly unhydrous and high-temperature mineral associations comparing with the initial ones in gneisses and amphibolites. Annealed crystalline rocks transformed into coptoblastolithes were observed in central uplifts of Boltysh and Terny impact structures as well. Similar process had effect in the core of Vredefort impact structure. It is possible that so called lunar granulites were originated due to brecciation and blastesis of the same type. The post-shock heating and recrystallization in all cases may be caused by the shear strain underneath the crater bottom during its growth at the impact.
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