No. 31: Jan-Feb 1984
After being ridiculed for well over a century, astronomical catastrophism is now coming into its own. First, there was the admission that a few small craters, like Meteor Crater in Arizona, just might be of meteoric origin; then, more and bigger craters (astroblemes) were recognized; and, recently, the discovery of the iridium-rich layer at the Cretaceious-Tertiary boundary has made the subject very popular, as evidenced by the following three items:
This quotation is from the lead-in to the article references below, which also has a nice world map of major impact sites over 1 km in diameter.
(Grieve, Richard; "Impact Craters Shape Planet Surfaces," New Scientist, 100:516, 1983.)
Reference. Terrestrial cratering phenomena are cataloged in Chapter ETC in Carolina Bays, Mima Mounds. For details about this book, go to: here.