Diameter Crater Pins Alternate Pins Printable Map Style Canadian Layer Fireball and Bolide Data Select Type Crystalline Mixed Sedimentary Select Age Range Quaternary (2.6 Myr. ago to present-day) Neogene (23-2.6 Myr. ago) Paleogene (66-23 Myr. ago) Mesozoic (252-66 Myr. ago) Paleozoic (541-252 Myr. ago) Neoproterozoic (1,000-541 Myr. ago) Mesoproterozoic (1,600-1,000 Myr. ago) Paleoproterozoic (2,500-1,600 Myr. ago) Select Country Algeria Argentina Australia Belarus Botswana Brazil Canada Chad Chile China Congo Egypt Estonia Finland France Germany Ghana Greenland India Jordan Kazakhstan Latvia Libya Lithuania Mauritania Mexico Mongolia Morocco Namibia Nicaragua Norway Peru Poland Russia Saudi Arabia South Africa South Korea Sweden Tajikistan Ukraine United States of America unlimited 0.1 kt 0.3 kt 1 kt 3 kt 10 kt 30 kt 100 kt