Lightning Fries Impact Theory
July 18, 2017
A signature in rock that was thought to come from extraterrestrial impacts could have been caused by plain old lightning. “Impact Geologists, Beware!” That’s the headline of a short paper in Geophysical Research Letters by H. J. Melosh of Purdue. His subtitle is, “A Cautionary Tale for Impact Geologists.” Why the alarm? Another “proxy” for […]