KT boundary impact glasses from the Gulf of Mexico region

Details KT boundary impact glasses from the Gulf of Mexico region KT boundary impact glasses from the Gulf of Mexico region

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24..297c&link_type=abstract

In Lunar and Planetary Inst., Twenty-fourth Lunar and Planetary Science Conference. Part 1: A-F p 297-298 (SEE N94-12015 01-91)

Mathematics

Logic

Contamination, Cretaceous-Tertiary Boundary, Glass, Gulf Of Mexico, Meteorite Craters, Meteoritic Composition, Spherules, Tektites, Geological Surveys, Transparence, Volcanoes, Volcanology, Weathering

Scientific paper

Cretaceous-Tertiary boundary (KTB) tektite glasses occur at several sites around the Gulf of Mexico. Contrary to rumor among KTB workers, glass fragments have been found by several researchers in the base of the spherule bed at Arroyo el Mimbral in NE Mexico. The presence of green, red, and transparent glass fragments at Mimbral only, demonstrates that the Mimbral glass is not a laboratory contamination by Beloc glass. The chemistry and ages of the glass are consistent with an origin from the Chixculub impact crater in Yucatan. No evidence supports a volcanic origin for the KTB glasses. A discussion of tektite glass from the KT boundary is presented.

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