  Strong strengthening of material under high confining pressure and jet nature
of outflow from impact craters permit to show meteoroid impacts of >=10E6 Mt
TNT equivalent are capable of ejecting rocks up to ~1 km in size from the Earth
into space. That permits one to propose the terrestrial origin of some NEA's
and SNC meteorites. It is shown the isotopic anomalies of nitrogen, argon and
xenon can be related with terrestrial mantle samples. The same applies to the
oxygen isotope shifts if one recalls the known manifestations of the kinetic
effects of isotopic fractionation.
