Evidence from cathodoluminescence for non-volcanic origin of shocked quartz at the Cretaceous/Tertiary boundary

Details Evidence from cathodoluminescence for non-volcanic origin of shocked quartz at the Cretaceous/Tertiary boundary Evidence from cathodoluminescence for non-volcanic origin of shocked quartz at the Cretaceous/Tertiary boundary

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.334..145o&link_type=abstract

Nature (ISSN 0028-0836), vol. 334, July 14, 1988, p. 145-147.

Physics

13

Cathodoluminescence, Crystal Structure, Earth Crust, Quartz Crystals, Colorado, Igneous Rocks, Sedimentary Rocks, Volcanology

Scientific paper

A cathodoluminescence study of shocked quartz at the K/T boundary in southeastern Colorado is described which reveals a diversity of luminescence colors not present in quartz from known volcanic ejecta, but typical of quartz in crustal/supracrustal lithologies. Cathodoluminescence color diversity indicates that the grains were originally derived from a variety of igneous, metamorphic, and sedimentary rocks subsequently overprinted with planar shock features. These observations lend support to the hypothesis of bolide impact at the end of the Cretaceous period.

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