1. Impact-related microspherules in Late Pleistocene Alaskan and Yukon "muck" deposits signify recurrent episodes of catastrophic emplacement. Issue 1 (December 2017) Authors: Hagstrum, Jonathan; Firestone, Richard; West, Allen; Weaver, James; Bunch, Ted Journal: Scientific reports Issue: Volume 7:Issue 1(2017) Page Start: 1 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗