Water content of glasses from the K/T boundary, Haiti - An indication of impact origin

Details Water content of glasses from the K/T boundary, Haiti - An indication of impact origin Water content of glasses from the K/T boundary, Haiti - An indication of impact origin

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.4329k&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 56, no. 12, p. 4329-4332.

Physics

9

Carbon Dioxide Concentration, Cretaceous-Tertiary Boundary, Glass, Infrared Spectrometers, Moisture Content, Volcanoes, Haiti, Tektites

Scientific paper

The water content in seven glass samples from the K/T boundary on Haiti was determined by micro-infrared spectrometry. These glasses are thought to result from impact melting associated with the K/T boundary impact, although this interpretation is not unanimous. The results of the water determinations, 0.013-0.021 wt pct H2O2, show that the Haiti glasses are water-poor. This is a common characteristic of impact glasses and tektites, which usually have water contents below 0.05 wt pct, and is not in agreement with interpretations that the Haitian glasses are of volcanic origin.

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