Glass from the Cretaceous/Tertiary boundary in Haiti

Haraldur Sigurdsson, Steven D'Hondt, Michael A. Arthur, Timothy J. Bralower, James C. Zachos, Mickey Van Fossen, James E.T. Channel

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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.

Original languageEnglish (US)
Pages (from-to)482-487
Number of pages6
Issue number6309
StatePublished - 1991

All Science Journal Classification (ASJC) codes

  • General


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