Abstract
Tektite-like glasses preserved at the Cretaceous/Tertiary boundary at Beloc in Haiti provide clear evidence of an impact event. The glass composition suggests that the impact occurred on a continental shelf region, generating a silica-rich glass with chemical composition that reflects the melting of continental crustal rocks, and a calcium-rich glass produced by the fusion of marl sediments. These findings indicate that catastrophic release to the atmosphere of 1015 moles of C02 from vaporized marl occurred during the impact.
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Sigurdsson, H., D'Hondt, S., Arthur, M. et al. Glass from the Cretaceous/Tertiary boundary in Haiti. Nature 349, 482–487 (1991). https://doi.org/10.1038/349482a0
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DOI: https://doi.org/10.1038/349482a0
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