[SunkenCiv]

Haughton Astrobleme: A Mid-Cenozoic Impact Crater Devon Island, Canadian Arctic Archipelago
http://www.researchgate.net/publication/237210205_Haughton_Astrobleme_A_Mid-Cenozoic_Impact_Crater_Devon_Island_Canadian_Arctic_Archipelago

[JimSEA]

Thanks, that’s really quite recent as these impacts go. Makes me hope that we are working on identifying the risks. Something like that would set us back on our heels.