Impaktyty astroblemy Ilińce, Ukraina

The complex Ilyinets crater is an example of the small impact structure formed in crystalline target rocks of the Ukrainian Shield. Its impactites are characterised by examples of metamorphosed gneisses, granites, fine-grained polymict breccia and suevites. In the breccia and suevite matrix, fluidal clasts present their earlier brecciation. Lobate contacts between quartz grains show recrystallisation by grain-boundary migration. Shock structures, PFs, PDFs and “ballen quartz” are not very frequent. The monomict suevite breccia was determined among impactites.