Impactite is an informal term describing a rock created or modified by the impact of a meteorite.

Fulgurites (from the Latin fulgur meaning thunderbolt) are natural hollow glass tubes formed in quartzose sand, or silica, or soil by lightning strikes.

The origin of the Dakhla Glass (DG) had puzzled scientists since MAXINE KLEINDIENST discovered it in 1987 nearby the Dakhla Oasis (Egypt). Some researchers had suggested the "Stone Age" glass may have been produced by burning vegetation or lightning strikes. But a chemical analysis showed that the glass was created in temperatures so high that they could only have been the result of an impact event.

Tektites (from Greek tektos, molten) are natural glass rocks up to a few centimeters in size, which most scientists argue were formed by the impact of large meteorites on Earth's surface.