Flynn Creek Crater Facts
- ~3830m diameter
- ~200m depth (minus breccia lens)
- ~20m max pre-impact relief
- ~15m max depth of water at time of impact
- ~40m avg breccia thickness
- ~140m avg breccia depth below crater floor
- ~35% max radial shortening of rim strata
- ~90-190m range for bolide diameter
- roughly polygonal shape
- lateral zone of disturbance averages 1000 m in extent from crater wall
- lowermost size limit for complex craters with central uplifts
- 1700 m of sediments overlying crystalline basement in area
- estimated length of time for initial crater formation: <60 seconds
- conodonts found in immediate crater infill indicate marine environment
- central uplift is composed of strata which have been structurally uplifted 300 m above normal position
- 11.2-72 km/s--max velocity range for terrestrial impacting bodies
- 25 km/s--total vaporization of stony bolides
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