Year: 1990
Type: report
Abstract: The presence of tektites, which most earth scientists agree are of terrestrial impact origin, in the same bed with a Pt-group abundance anomaly and shocked quartz provides convincing proof of an asteroid or comet impact at the precise K-T boundary.The tektite evidence confirms the Alvarez K-T impact hypothesis and delivers a crippling blow to the Officer and Drake volcanic hypothesis for the explanation of Ir anomalies, shocked quartz, and boundary phenomena.
DOI: 10.3133/ofr90635
Authors: G.A. Izett, F.J. Maurrasse, F.E. Lichte, G.P. Meeker, Robin Bates
Language: English
Topic: Astro and Planetary Science
Subfield: Space and Planetary Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W48899322