Abstract
Loose quartz grains packed around chemical explosives are forced during cratering explosions into compacted, coherent masses resembling sandstone blocks found at certain meteorite craters. Sandstone-like lumps found at the Wabar (Arabia) meteorite craters are similar to these shock-lithified sands. Shock-lithification by impact may be effected on Moon as large meteorites strike surfaces covered with rubble from earlier collisions.