Comet showers as a cause of mass extinctions

TitleComet showers as a cause of mass extinctions
Publication TypeJournal Article
Year of Publication1987
AuthorsHut, P, Alvarez, W, Elder, WP, Hansen, T, Kauffman, EG, Keller, G, Shoemaker, EM, Weissman, PR
JournalNature
Volume329
Pagination118–126
Date Publishedsep
Abstract

If at least some mass extinctions are caused by impacts, why do they extend over intervals of one to three million years and have a partly stepwise character? The solution may be provided by multiple cometary impacts. Astronomical, geological and palaeontological evidence is consistent with a causal connection between comet showers, clusters of impact events and stepwise mass extinctions, but it is too early to tell how pervasive this relationship may be.  PDF

URLhttps://doi.org/10.1038/329118a0
DOI10.1038/329118a0