🔬 What They FoundShocked Quartz : Glass-filled planar fractures and deformation features — classic cosmic impact indicators. : Glass-filled planar fractures and deformation features — classic cosmic impact indicators. Over a Ton of Meltglass : Formed at temperatures exceeding 2200°C; includes melted zircon, kaolinite, and quartz. : Formed at temperatures exceeding 2200°C; includes melted zircon, kaolinite, and quartz. No volcanic or tectonic activity: Temperatures required to melt zircon, boil quartz, and shock grains exceed natural Earth processes outside of cosmic impacts.